CORESENTIAL TEAM
Robin Conway  President-Lighting
Robin Conway Robin Conway, professional sales executive with over thirty years in the lighting industry. Prior to joining Coresential in April 2009, Robin spent over twenty years working for Crescent Stonco, a Philips Luminaire division. While at Crescent Stonco Robin held various management positions in Sales, Marketing and Product Development. Robin has a bachelor degree in both Business and Psychology from Farleigh Dickinson University. Robin and her husband Jeff are residents of Chapel Hill, North Carolina. They have two sons, Ryan (26) and Patrick (24), both graduates of UNC Charlotte. Patrick recently joined Coresential as a specification sales engineer. Robin loves to travel, golf, and play competitive tournament Texas Hold 'Em

rconway@coresential.com
919-602-0849

Joe Tumlin  President-Commercial
Joe Tumlin Joe Tumlin has been with Coresential since June 1994. He has a degree in Finance as well as a Master of Business Administration from the University of South Florida. Joe began his career with Coresential as an outside salesman covering the West Florida territory. In 2000, Joe became a principal of the agency and serves as President of Commercial Sales. In 2009 Joe completed a three year certification program held at Arizona State University to achieve his Certified Professional Manufacturers Representative designation. Married since 1994, Joe and Susan have three children and currently reside in the Tampa area.

jtumlin@coresential.com
813-402-4023

James Yore  President-Industrial
James Yore Jamey Yore began his career with Coresential in 1995. He earned his Bachelor’s Degree in landscape architecture from The Ohio State University. His experiences include: achieving his Competent Toastmasters designation from the Toastmaster’s International in April 1999, completing the CPMR program in January 2000, sitting on the National Association of Electrical Distributors (NAED) YET Committee as the manufacturer’s rep liaison for the 2002-2004 term and again for the 2004-2006 term, and being nominated to sit on the National Electrical Manufacturer’s Representatives Association (NEMRA) Board of Directors for the 2004-2006 term and again for the 2008-2010 term. Jamey is one of the partners of Coresential and is President of the Industrial Division. Jamey’s vision statement is: Striving to earn the respect and trust of others while developing lasting relationships; being an apprentice in the industry in order to learn the skills and gain the knowledge that will insure the longevity of our agency.

jyore@coresential.com
407-256-4730

Luis Alvarez  
Luis Alvarez Area: Miami

Luis Alvarez has been with Coresential since 1997. Luis's territory includes Broward, Dade and Monroe Counties as well as the Caribbean Basin. Luis is fluent in Spanish and has lived in the South Florida area since the 1960's. He is very knowledgeable of the area, and has seen it evolve over the years to what is today - a dynamic, vibrant and cosmopolitan area. Luis holds a Bachelor of Business Administration Degree from Florida International University, is married and has one son. Luis enjoys sports, outdoor activities, and spending time with his family. Prior to joining Coresential Luis worked for People's Gas System for over nine years in various capacities

lalvarez@coresential.com
305-962-3992

Sandra Atiles-Tyrrell  
Sandra Atiles-Tyrrell Area: West/Central FL

Sandra joined the Coresential team in 2014 as a Product Specialist covering Central and West Florida, bringing with her 20 years of combined experience in manufacturing, distribution and logistics. 12 years of that experience were with Grainger holding roles in Government Sales, Inside Sales Management and Operations; 6 years were in Hub Operations with UPS in Puerto Rico. Most recently Sandra was a Lighting Sales Representative with GE Lighting where she focused on strategic accounts in the Central Florida market. Sandra holds a BS Degree and a Master of Business Administration from University of Phoenix. Fluent in Spanish (her first language), Sandra lives in Tampa, is married, and has two stepchildren and two rescued Great Danes. Sandra actively volunteers with the Colon Cancer Alliance and raises funds for the Tampa Chapter of the “Undy 5000”, an annual 5k race for this organization.

satilestyrrell@coresential.com
813-352-0195

Howard Brown  
Howard Brown Area: Eastern North Carolina | South Carolina

Howard Brown joined Coresential’s outside sales team in June 2018 covering eastern North Carolina and parts of South Carolina. Howard is a former senior district sales representative and he joins Coresential with extensive experience in energy solutions. Employed by Philips Lighting for 28 years, Howard’s roles included district representative responsible for luminaires, and conventional, end-user specialist, distribution accounts, and field sales. Prior to Philips Lighting, Howard was District Sales Manager for the R.E. Dietz Company in three roles: aftermarket, OEM, and consumer. Howard’s credentials and affiliations include LC, LED certification, Green Lights Surveyor Ally, and he is an IES member. Howard graduated with honors from East Carolina University with a BS in Political Science. Howard lives in Raleigh, NC.

hbrown@coresential.com
919-302-9011

Billy Dorton  
Billy Dorton Area: Central FL

Billy Dorton joined GCA, now Coresential, in 2005 and has territorial responsibilities in Central Florida including Orlando, Kissimmee, Winter Haven and Melbourne. Billy graduated from Florida State University in 1996 with a Bachelor’s Degree in Operations Management. He spent nine years learning the electrical distribution business while employed by Hughes Supply. Outside of Coresential, Billy enjoys playing golf and other sports, and spending time with his two children, Olivia and Nathan.

bdorton@coresential.com
321-960-6429

Jane Kirkland  
Jane Kirkland Area: Eastern North Carolina | South Carolina

Jane Kirkland joined Coresential’s Energy and Lighting Solutions team in January 2017 covering eastern North Carolina. Prior to Coresential, Jane had a 35 year career with GE Lighting. She has extensive experience in delivering energy saving lighting solutions in commercial and industrial markets. Jane graduated from the University of North Carolina in Chapel Hill with a Bachelor of Science in Business Administration. She resides in Raleigh, NC

jkirkland@coresential.com
919-270-0173

Will Lesch  
Will Lesch Area: West/Central FL

Will Lesch has been with Coresential for 17 years. His territory includes metro Tampa, Lakeland, and Sarasota. Will represents both the electrical division of Coresential and the Coresential Lighting and Energy Saving division. Will, his wife Patricia, and step-son Michael live in Tampa. Will is the author of several faith based books. His latest, The TRUST Prayer, is available on Amazon.

wlesch@coresential.com
813-625-0528

Eleanor Marschke  
Eleanor Marschke Area: Ft. Lauderdale

Dr. Eleanor Marschke, SHRM, a professional sales executive, has been with Coresential since 2008. Prior to Coresential, Eleanor was employed at Thomas & Betts Corporation with responsibility for the Broward, West Palm Beach and Martin County Territory. Eleanor spent twenty-three years of her professional career with Thomas & Betts and in 2008 she completed her doctorate degree in Human Resource Management from the Wayne H. Huzigena Business School at Nova Southeastern University. Eleanor continues to publish articles on Sales Management and Spirituality in the Workplace and is currently working on a Specialization Degree on her Doctorate in Sales Management. Coresential has been an anchor in her career and she has gained knowledge of new market concepts by contributing to numerous manufacturers’ sales numbers, and recently Eleanor was given the responsibility of Strategic Accounts. Eleanor enjoys all sports, her family and her church Harvest Church where she assists with outreach programs in the community involving women and children.

emarschke@coresential.com
954-818-2289

Matt Morrison  
Matt Morrison Area: Western North Carolina

Matt Morrison, a Sales Engineer, joined Coresential’s Energy and Lighting Solutions outside sales team in June 2017 covering western North Carolina. Matt has more than 4 years of proven success managing energy and sustainability initiatives for diverse clients. Matt is LEED certified (LEED GA) and is pursuing CEM (Certified Energy Manager) accreditation. Matt is a graduate of UNC Charlotte and lives in Charlotte, NC.

mmorrison@coresential.com
919-624-3735

Brian Sheets  
Brian Sheets Area: North Florida

Brian recently rejoined Coresential's commercial outside sales team and is Coresential's contact covering the NE portion of Florida from Volusia to Nassau County.

bsheets@coresential.com
813-784-4757

Paul Tynan  
Paul Tynan Area: SW Florida

Paul Tynan, Professional Sales Executive, has been with Coresential since 2002. Coresential has provided a conduit for continued growth and experience marketing both electrical and lighting products. Prior to Coresential, Paul was employed with Wier Enterprises, a leading cargo control manufacturer in the transportation industry. As Sales Manager, Paul spent nine years building their brand through direct and distribution sales in the Southeast. Specializing in marketing, Paul attended the University of South Florida and was a scholarship member of the Bulls golf team from 1988 to 1992. Afterwards, Paul spent two years as a caddie on the PGA Tour. He continues to share his passion for golf as Chairman and Co-Founder of the MS Cure Classic, a charity golf tournament raising money for research into the cause and hopefully one day a cure for Multiple Sclerosis. Paul enjoys all sports and when not at work, can often be found fishing offshore.

ptynan@coresential.com
813-625-0546

Patrick Conway  
Patrick Conway Area: State of Florida

Patrick Conway is a graduate of UNC Charlotte and joins Coresential with a Bachelor of Science in Mechanical Engineering. Patrick resides in Tampa and is a Sales Engineer calling on the specification and design community throughout Florida and the Carolinas. He is a certified NAILD Lighting Specialist and a LEED Green Associate. Patrick graduated with a motorsports concentration and is an avid car enthusiast.

pconway@coresential.com
919-619-4573

Tony DiPalermo  
Tony DiPalermo Area: South FL

Tony DiPalermo joined the Coresential team in December of 2014 as a Specification Sales Representative covering the Southeast Florida territory. Tony came to Coresential with over 20 years’ experience in the MRO Industrial Distribution space. Before joining Coresential, Tony worked at GE Lighting as a Lighting Sales Representative supporting GE’s sales in South Florida. Tony holds dual Bachelor of Science degrees from Florida State University in Marketing and Multinational Business. In his spare time, Tony enjoys spending time with his two children, Anthony and Isabella, as well as playing sports, golfing, and various outdoor activities.

tdipalermo@coresential.com
561-255-7776

Frank Holley  
Frank Holley Area: North Florida

Frank Holley, professional product specialist, sales executive along with being part of the energy lighting team has been with Coresential since 2009. Prior to Coresential Frank was with EMS with responsibility for Jacksonville, Gainesville, Ocala, Tallahassee and the South Florida markets since 2003. Frank was in the electrical distributor business for 27 years before moving over to the EMS team representing manufacturers for the past 8 years. Frank has been designing and selling energy lighting systems since 2004 and has a passion for saving customers money on their lighting systems. Frank enjoys spending time golfing, boating, fishing and developing long term relationships with the customer. Frank has been married for 21 years to his wife Lynne and they have two daughters and one son.

fholley@coresential.com
904-472-5000

Jim Lehan  
Jim Lehan Area: West Florida

Jim Lehan has been with Coresential since 1996 covering the west coast of Florida. Currently Jim is a Product Specialist with emphasis on OEM, end user, large contractor and specifications. Jim came to Coresential with 12 years’ experience in electrical distribution on both the corporate and branch sales sides. Jim has a BS from Florida State University and he earned CPMR designation in 2002. Jim resides in Tampa with his wife Julie, and children, Trey and Courtney. For relaxation, Jim enjoys anything having to do with the water, such as sailing and fishing.

jlehan@coresential.com
813-390-0645

Garrett Morrison  
Garrett Morrison Area: Central/South Florida

Garrett Morrison joined the sales team in April 2007 as an outside salesman. In 2009 Garrett began working with our Industrial sales team and concentrates on new business development with OEMs and specifications with Engineers in Central, Ft. Lauderdale, and Miami Florida Markets. Born in Corinth, Mississippi, Garrett grew up in the greater Orlando area. Garrett attended the University of North Florida and graduated with a BA in Education while on a golf scholarship, and now resides in Orlando with his wife Leslie and their two children. Garrett and his wife are deeply involved with their church. Garrett is an accomplished golfer qualifying for three USGA's Amateur Events, PGA and Nationwide Tour events, and was also Florida's Mid-Am Champion in 2008.

gmorrison@coresential.com
904-631-9818

Meredith Imlay  Sales Coordinator
Meredith Imlay Meredith Imlay received a Bachelor’s of Psychology degree from the University of Central Florida in Orlando. Before joining Coresential’s Inside Sales Industrial Team in early 2017, Meredith’s professional work experience included administrative manager, accounts representative, a regional sales manager for a consulting firm in Tampa. As Coresential’s Sales Coordinator, Meredith works in concert with Coresential's entire sales organization to deliver incremental sales growth with our existing customer base in addition to prospecting and qualifying new customers. In her free time Meredith is a Certified Guardian Ad Litem.

mimlay@coresential.com
813-402-3759

David Morrison  Director of Commodity Sales
David Morrison Specialist for: Commodities

David began his career in 1986 with Hughes Supply and for 8 years learned the electrical business from warehouse/driver, to warehouse manager, to inside sales, and then outside sales. David took a position with Griffin Electric Sales in 1994 (which merged with GCA, now Coresential, in 2004) specializing in outstanding customer service with wire and cable lines. During his 31+ year career in the electrical business, David has represented and sold numerous wire and cable products making him one of the most well-rounded commodity salesmen in Florida. David enjoys playing golf, fishing and other sports, and spending time with his wife Simone, four daughters, six granddaughters, and one grandson.

dmorrison@coresential.com
813-402-4025

Kenny Lambert  Inside Sales Manager
Kenny Lambert Specialist for: Industrial

Kenny began his career in 1987 with Raybro Electric Supplies (now CED). Starting as a driver, he worked his way up through will-call/counter sales to inside salesman handling some of the larger electrical contractors in Tampa. Kenny joined Gunn-Creel & Associates in 1997 as the inside salesman for the Miami territory. In the fall of 2001, Kenny became a product specialists working with engineers and contractors to promote aluminum building wire and feeder MC cable, and in 2013 Kenny transitioned to his current position of Inside Sales Manager. Kenny is a member of the Electrical Council of Florida, and is a mentor for Tampa, Lakeland, and Pasco/Hernando Chapters. Kenny enjoys motorsports, fishing and all of the Tampa Bay sports teams.

klambert@coresential.com
813-402-4036

Betsy Gunn Chilton  Sales Manager-Lighting
Betsy Gunn Chilton Specialist for: Lighting

Betsy Gunn Chilton, daughter of our founder John Gunn, grew up in the agency business. Betsy started with the agency over 14 years ago. She has served many roles in inside sales and outside sales over the past decade plus. Since 2009 Betsy has been a dedicated sales and management resource for the Energy and Lighting Solutions division of Coresential. Her product knowledge and expertise includes but is not exclusive to Commercial and Industrial HID, Fluorescent, Induction and LED products. Betsy, her husband Rod, their daughter Steffi, and their black lab (Duke) live in Lithia and enjoy traveling to their family’s lake home in upstate New York. In her free time, Betsy also coaches her daughter’s basketball team. Betsy reports directly to the President of CELS.

bchilton@coresential.com
813-402-4040

Junior Bunner  
Junior Bunner Specialist for: Commercial

Junior Bunner graduated from Tampa Bay Vo-Tech in 1981 where he studied Industrial Electric including residential, commercial, and industrial wiring and maintenance. Junior has more than 35 years’ experience in the electrical industry (5 years in the field), 18 of those years have been with Coresential’s Inside Sales Commercial team. With his wealth of experience in the electrical industry, Junior is an asset to our inside sales group.

jbunner@coresential.com
813-402-4031

Sherry Zimmermann  
Sherry Zimmermann Specialist for: Commercial

Sherry Zimmermann has been in the electrical rep business since 1989. Sherry started as a receptionist with a lighting rep in Indianapolis, IN and continued in the rep business with experience as an inside sales supervisor and inside sales. Sherry has a broad range of electrical product knowledge including conduit fittings, strut, pull boxes, wire/cable, and lighting. Sherry is very efficient in order entry, problem solving and expedient in responding to customer needs. Married since 2011, Sherry enjoys attending sporting events (particularly baseball), art festivals, antiquing, museums and travel. Favorite quote: “Try not to become a person of success, but rather try to become a person of value.” – Albert Einstein

szimmermann@coresential.com
813-402-4032

Tonya Gunn  
Tonya Gunn Specialist for: Commercial

Tonya Gunn joined Coresential over 11 years ago. She has supported both our electrical and our lighting lines over the last decade. Since 2013 Tonya has been a dedicated support and inside sales resource for the Energy and Lighting Solutions division of Coresential. Because of her experience on the electrical side of our agency, Tonya is very familiar with the customers we serve and is quickly learning the products that fall under the Coresential Commercial side of the house. Tonya lives in Ruskin and enjoys spending time with her family.

tgunn@coresential.com
813-402-4029

Wilfred Milligan  
Wilfred Milligan Specialist for: Commercial



wmilligan@coresential.com
813-402-4035

Roger Kossert   
Roger Kossert Specialist for: Commodities

Roger Kossert has been in the electrical industry for more than 30 years, 11 years in Pittsburgh and 20+ years in Florida. Roger has been a member of Coresential’s Inside Sales Commodities Team for his entire tenure with the company specializing in building wire (copper and aluminum), portable cord, low voltage cable, and conduit. Roger is an avid golfer and a retired professional bowler. Roger and his wife Debbie live in Lithia, and they have one son, Douglas.

rkossert@coresential.com
813-402-4034

Jim Pickle  
Jim Pickle Specialist for: Commodities

Jim Pickle has more than 33 years in the industry and holds a BA in Business and Economics from Florida State University. Jim’s entire career was with Graybar where he had experience as Operations Manager, ISO Quality Auditor, Senior Buyer, and District Purchasing Manager. Jim joined Coresential’s Inside Sales Commodities Team in March 2018 with a vast amount of experience in the electrical industry and an intimate knowledge of our products and market. Jim’s hobbies include cycling and fishing.

jpickle@coresential.com
813-402-4026

Barbara Opperman  
Barbara Opperman Specialist for: Industrial

Barbara Opperman joined Coresential in 2013 with 20+ years’ experience in the electrical industry. Barbara started out in inside sales Com/Data and then moved to the electrical side of the business. An asset to Coresential's inside sales industrial team, Barbara's special expertise and experience in the industry include water/waste-water.

bopperman@coresential.com
813-402-4028

Cybil Oliver  
Cybil Oliver Specialist for: Industrial

Cybil Oliver joined Coresential’s Inside Sales Industrial Team in early 2017. Cybil holds a BA Business degree and an AAS in Paralegal Applications from Berkeley College. Coming from outside the industry, Cybil has experience in the areas of marketing, management, product placement, event planning and coordination, public and business relations, business development, and strategic planning, and is now providing dedicated service assisting Coresential’s outside sales team and customers. Cybil enjoys reading and traveling.

coliver@coresential.com
813-402-4033

Dave Ledbetter  Lighting Project Specialist
Dave Ledbetter Specialist for: Lighting

Dave joined Coresential in 2015 with 22 years of experience in lighting and 9 years in commercial and residential automation. Formerly the owner of a Florida manufacturer’s rep agency and a landscape lighting design and contracting business, Dave came to us in 2014 as a result of our partnership with GE Lighting. Dave’s knowledge of commercial, industrial and residential lighting in addition to his knowledge of controls runs deep. Dave, his wife Jennifer and daughter, Victoria live in Jacksonville. In addition to spending time with his beautiful family, Dave enjoys cooking and camping in his spare time.

dledbetter@coresential.com
813-402-4024

Amanda Diotalevi  
Amanda Diotalevi Specialist for: Lighting

Amanda Diotalevi started with the agency shortly after she graduated with a Bachelor’s degree from FSU 6 years ago. Amanda is a quick study and embraced her role as a key inside sales representative dedicated to the Energy and Lighting Solutions division of Coresential. She has vast knowledge of the lighting manufacturers we represent. Amanda takes great pride in providing excellent service and support to the Coresential outside sales team, the manufacturers we represent and most importantly, to the customers we serve. Amanda, her husband Brett, their newborn twins Brooklyn and Brayden along with their Goldendoodle (Otis) live in Lithia. The Diotalevis enjoy boating and spending time at their family’s beach house.

adiotalevi@coresential.com
813-402-4041

Maria Milan  
Maria Milan Specialist for: Lighting

Before joining Coresential in early 2017, Maria Milan had 4 years of experience in bilingual call center management, first as a call center team leader and then as a customer service manager with a communications company. One of Maria’s key achievements was to set up and manage external call centers in Manila and the Dominican Republic. Maria is an integral part of Coresential’s Energy & Lighting Solutions division providing excellent service and support to the manufacturers we represent and the customers we serve. Residing in Dover, FL with her husband George and 4 daughters, Diana, Joanna , and twins Aleyna and Alexa, Maria enjoys spending time with family and being a soccer mom.

mmilan@coresential.com
813-402-4038

Rosa Millan  
Rosa Millan Specialist for: Lighting

Rosa joined Coresential’s inside sales team in September 2017 with more than 5 years customer service and financial/banking experience. Rosa is pursuing her Associates Degree while living in Gainesville with her husband Alex and their Shih Tzu Gordo, where they enjoy spending time with their large extended family.

rmillan@coresential.com
813-402-4039

Peter Gherini  Comptroller
Peter Gherini Peter Gherini began his career in 1991 with Griffin Electrical Sales and has been with Coresential since 2004. With a Bachelor degree in MIS and a minor in Finance from the University of South Florida and more than 25 years in the industry, Peter Gherini has held positions from order processing, inside sales, warehouse logistics, and now as Comptroller responsible for all aspects of Coresential’s Accounting and Human Resources Departments. Happily married for 24 years, Peter and his wife Julie have a son studying Mechanical Engineering. In his spare time Peter enjoys traveling with his family and friends.

pgherini@coresential.com
813-402-4027

Michelle Stark  Executive Assistant|Website & Network Support
Michelle Stark With 17 years as a legal secretary, Michelle joined the company in 1993 as assistant to John Gunn (co-founder of Gunn-Creel & Associates, Inc.) until his retirement in 2014. Michelle provides secretarial, travel, event planning, and design services to Coresential as well as network, website, and marketing support.

mstark@coresential.com
813-402-4030

Lynda Ellis  Accounting Assistant
Lynda Ellis With more than 30 years’ experience in customer service, supervisor, and administrative positions, Lynda joined Coresential in 2006 as an Accounting and HR Assistant and she is a Florida Notary Public. Lynda attended Jackson State University, graduated from Miller-Hawkins Business College in Memphis, and is currently working on a B.S. degree in Accounting. Lynda walks 10-13 miles per day, enjoys traveling and fitness classes, and is an active member in her church and sings in the choir. Lynda’s motto: When you focus on being a blessing, God will bless you in abundance.

lellis@coresential.com
813-402-3815

Frank Colligan   Logistics Manager
Frank Colligan

fcolligan@coresential.com
813-402-4037

Jose Martinez   Warehouse Manager
Jose Martinez

warehouse@coresential.com
813-349-0092

C.W. Harrell   Inventory Control
C.W. Harrell

charrell@coresential.com
813-349-0090

Warehouse Team
Pictured:
Frank Colligan, Robinson Salazar, C.W. Harrell, Anthony Nichols, Carlos Martinez, Jose A. Martinez.
Not shown: Jose Martinez (Manager)
Our Team
Our Location