Andy Silverman

Owner & Instructor Trainer-Trainer

Andy is the founder and owner of Columbus Scuba. He got his start as an instructor with the first accredited certifying agency, YMCA SCUBA. There he earned the rating of Instructor Trainer and was asked to serve on the National Advisory Committee in program development and standards while continuing as technical advisor for the East Coast region.

In 2011, Andy received the prestigious Platinum Pro 5000 award. Only a select few of the most elite and prominent divers (including Jacques Cousteau) in the WORLD hold this award. He has also been awarded ELITE 300 by PADI and is 1 of 52 instructors out of 136,000 world-wide dive professionals to earn this award.

Andy currently directs the diving program at International Field Studies in Andros, Bahamas which hosts the 3rd largest barrier reef in the world along with beautiful oceanic and inland Blue Holes and caves.

Today Andy sits on the Advisory Board for International Nitrox and Technical Diving (IANTD).

Andy also works with leading equipment manufacturers with field testing and product development.

Professional Certifications:

Andy is a certified Cave Diver and Cavern Instructor with IANTD. He holds an Instructor Trainer-Trainer rating with IANTD. Andy is a Course Director with PADI and Three Star Instructor-Trainer with CMAS. He is involved with Public Safety diving and works as a trainer for numerous Public Safety Diving teams in Ohio.

Andy also sits on the Advisory Board for International Nitrox and Technical Diving (IANTD). In 2011, Andy received the prestigious Platinum Pro 5000 award. Only a select few of the most elite and prominent divers (including Jacques Cousteau) in the WORLD hold this award.

•IANTD Open Water Instructor Trainer Trainer (ITT)
•IANTD Advanced Rec. Trimix Instructor Trainer
•IANTD Cave and Cavern Instructor
•Semi and Closed Circuit Rebreather Instructor
•SEI Instructor Trainer
•YMCA Instructor Trainer
•CMAS 3 Star Instructor Trainer
•PADI Course Director
•Cylinder Training Services (CTS) Instructor
•DAN Instructor
•ASHI Instructor
•HSA Instructor

•IDEA Instructor Trainer
•SSI Dive Control Instructor
•PSDA Level 4 Instructor
•PADI Medic First Aid Instructor
•ARC Instructor
•AHA Instructor

Diving Specialty Instructor Certifications:

•Night Diver
•Boat Diver
•Computer Assisted Diver
•Multi Level Profile Diver
•Diver Propulsion Vehicle Diver
•Cavern Diver
•Wreck Diver
•Technical Wreck Diver
•Ice Diver
•Navigation Diver
•Nitrox Enriched Air
•Advanced Nitrox
•Recreational Trimix
•Advanced Recreational Trimix
•Free Diver
•Oxygen Provider
•Diver First Aid
•Public Safety Diver
•Search and Recovery Diver
•Equipment Repair Specialist
•Fish Identification Diver
•Peak Performance Buoyancy Diver
•Reef Ecology Diver
•Coral Reef Conservation Specialist
•Gas Blender
•Dry Suit Diver
•Basic Life Support
•Hazardous Marine Life
•Self-Sufficient Diver
•PSI Cylinder Inspector
•Aqualung Technical Seminar Certification
•Cressi-sub Technical Seminar Certification

And what really matters...

523324_10151122462954921_1250014554_nMelissa Silverman, Andy's wife, and their boys, Andrew and Tyler are a testament to the CSI family!

Melissa is an accomplished Instructor. She is eager to get to know you and make you part of the CSI family. Melissa is committed to making your experience a good one from the shop to the water!

Meet the rest of the staff

Josh Ashley


Josh was inspired to learn to dive by his dad, who was an active diver in the early 70s. Josh is an Eagle Scout and loves the outdoors, especially camping and being on the water. His favorite dives have been the caverns of Ginnie Springs, Florida and the wreck of the RMS Rhone in the British Virgin Islands. He feels fortunate to have found the awesome family at CSI.

Bob Bolds


Bob has had a long love for water, starting as a lifeguard and Water Safety Instructor before earning his certification. When not diving, Bob is a banking professional as well as a Youth Pastor.  His wife Robin and two daughters, Tori and Taylor also share his passion of diving.

Jody Brooks


You'll find Instructor Jody Brooks in the water every weekend with students past and present. Jody loves sharing his knowledge in and out of the water. He enjoys spending time around the campfire on the weekends with his wife Lisa and his scuba family.

Lisa Brooks


Lisa Brooks is a dive master and the Treasurer of the Mid Ohio Dive Club. Her favorite dive spot is Bonaire or anywhere with Sea Turtles. Lisa brings style to the sport of diving by "blinging out" her gear. You will find Lisa and her husband Jody out by the campfire in the evenings.

Shelby Brown


Shelby went to Hocking College for ecotourism and adventure travel, where she learned how to dive in 2014 on Andros island in the Bahamas. She fell in love with SCUBA and the ocean and decided to pursue it further with the great family at CSI.

Jessica Carrier


Jessica is proud to be in the CSI family! She started diving in Spring 2011 and became instantly hooked! Jessica became an Instructor in 2012 and has loved sharing her passion for diving with others. She is a high school Biology and Chemistry teacher currently in South Korea.

Ryan Carrier


Ryan is a Divemaster and has been diving since August 2011. Ryan's favorite course so far is the cavern diving course at Ginnie Springs, Florida. He loves to travel and living in Europe and South America. You can almost always find Ryan by looking for the neon green drysuit!

Jessie Cohen-Kiraly


Jessie got certified in 2014 in the Bahamas. Originally from Cleveland, OH, Jessie came to Columbus and joined the family. She attends college in West Virginia where she studies recreation, parks, and tourism resources.

Shane Cooke

Tec Instructor

Shane is a graduate of OSU and avid outdoor enthusiast. Shane spends much of his time in the outdoors no matter the weather.  Before scuba he spent time backpacking through much of the US and Canada.  He is an IANTD technical instructor and loves diving shipwrecks!

Jude Divierte


Jude was born in NY, moved to Ohio in 1986 and has been a Buckeye ever since. In 2001, he completed his Open Water Certification. Since then he has continued his education through multiple agencies to the professional level. He is an IANTD and PADI Open Water Instructor.

Michael Flowers


Michael Flowers started his scuba career as a student with CSI on the island of Anrdros, Bahamas. He quickly progressed through his divemaster, and recently became an instructor and is fully enjoying teaching and fun diving in the big blue ocean of Jeju, South Korea.

Chris Flook


Chris was originally certified in 2009, but began underwater exploration by snorkeling on shallow ship wrecks in Lake Huron at the tender age of 8. Chris loves the technical side of deep diving; it's not rare to find him hanging out at the bottom of Gilboa.

Dave Foley


Dave started diving on family vacation in the Caribbean in 2012 and was hooked ever since. Originally from NY, Dave moved to Columbus to attend Veterinary School. Shortly after, Dave found Columbus Scuba and joined the family. Dave loves Columbus Scuba's trips to Gilboa where he can scuba dive and camp with the gang.

Mark Friend


From snow to sun, Mark does it all. He has an education in Eco-tourism and Adventure Travel and certification in Vertical Rope Rescue, Leave No Trace ethics, Wilderness Survival and First Aid, Ocean Kayaking, sailing, Maritime Captain and much more.

Geroges Gawinowski

Instructor Trainer-Trainer

Georges has taught full time scuba diving for 18 years. He is IANTD's Training Director for the US South-East coast, and member of the IANTD Board of Advisors. He is NSS/CDS CCR Cave instructor teaches Cave diving, Wreck diving, mixed gas diving and rebreathers.

Bryan Griffith

Master Scuba Diver Trainer

Bryan received his PADI dive instructor certification in 1996 through Ocean Divers in Key Largo, Florida. Shortly afterward, Bryan moved back to Ohio where he worked for a local dive shop. Bryan has been a certified dive instructor now for over 17 years.

Steve Hecker


Steve has been diving since 2012. During that time he has obtained several certifications through PADI and IANTD. You will most likely find Steve behind the camera. There aren’t too many weekends during the year that you won’t find him underwater.

Jon Heidenreich


Jon started diving in 2008, and obtained instructor status in 2015. Jon dives frequently at tanks in the Newport Aquarium where he volunteers. His favorite dive? Anytime when his wife, Linda, and 11 year old son, Matthew are blowing bubbles too!

TC Huang


TC has been in Columbus area since 1993 when he moved to attend OSU from Taiwan. After his first certification in 2011, he fell in love with the sport and has been diving avidly ever since. You will find him diving somewhere in the quarry, rain or shine.

Doug Hyland


Doug started as a Public Safety Diver in 2007 and has been hooked on blowing bubbles ever since. Doug is firefighter and paramedic for Washington Twp. When not instructing students, you'll find Doug with his two children, hunting, or at the ice rink.

Greg LeValley


Greg began diving in 2002 as a Public Safety Diver. He met and became part of the CSI family in 2015. His favorite dives include Guadalcanal, Tonga, Bonaire and fossil diving in Venice Beach. Greg enjoys hunting, fishing, motorcycling and playing the bagpipes.

Charles Nutt


From the first breath Charles took underwater he was hooked! When he did his first check-out dive at the quarry, it ignited a passion to continue on with diving education.  During the day he is a Structural Engineer. Charles is happiest underwater because they can’t make him take work with him-no matter how hard they try!

Shawn Marker


Shawn learned to dive in 1996 while in the Air Force. In 2010 Shawn was introduced to the CSI family. Since then he has completed his Dive Master and Instructor training. Shawn enjoys diving at Gilboa Quarry and Cooper River.

Mitch Mazaher


Mitch threw together a bucket list and SCUBA was at the top. “Getting certified with CSI is among the best decisions I’ve ever made.” Mitch works full time as a Professional Engineer, and is a graduate from The University of Texas at Austin.

Joe Mazik


Joe got his open water certification in 2009 at age 15 and was hooked ever since.  He studies Mechanical Engineering at Ohio State University and loves the Buckeyes. One day he hopes to design and create his own scuba gear. His favorite dive was on a wreck in the Florida Keys, The Thunderbolt!

Jim McMillin


Jim has been diving since 2012. During that time he has obtained nine advanced/specialty certifications through PADI and IANTD. Most of his diving has been in the Ohio quarries and the Caribbean. Jim’s favorite dive is any with his wife.

Meghan McMillin


Meghan has been diving since 2012. In that time she's obtained nine advanced/specialty certifications through PADI, including Divemaster.  Most of her diving has been in Ohio quarries. Meghan’s favorite dive is the Carib Cargo dive in Saint Maarten.

Chris Medved


Chris got certified in 2011 so he could dive while on vacation in Hawaii, and hasn’t looked back since. He enjoys traveling with his wife Tina and diving with his “scuba” family. His favorite dives are the Cooper River and the Manta Ray dive in Hawaii.

Eric Nilsen


As a competitive swimmer, Eric had dreams to breathe under water. So getting scuba certified seemed natural. Eric has been diving since 2005. Eric enjoys diving in Ohio and many Caribbean locations.

Linda Pansing


Linda has been a diver since 1988 when, she had to get certified to marry into her husband’s diving family ;-) An Archaeologist by trade, she has worked on terrestrial and underwater sites that date from the Late Pleistocene to the 20th century.

Scott Pansing


Scott has been diving since the early 80's and has never looked back. He has worked with many scuba originations to help promote diving and to make the sport safer and more enjoyable for all divers. During the weekdays he is an Electromagnetic Compliance Engineer, but on the weekends, just a mild mannered scuba diver.

Jerry Perkins


Jerry, Instructor, Mayor of CSI-ville, President of Mid-Ohio Dive Club, Head BBQ Chef, wears many hats at CSI. His favorite thing about diving is the "family" he has found. His most favorite dives are with his wife Toni but Jerry will dive anywhere there is salt or fresh water!!

Steven Repas


Steven discovered diving in 2012 and was fortunate enough to have met the CSI family in 2014. Steven is studying pharmaceutical science and pre-medicine at THE Ohio State University. Outside of diving, Steven really enjoys participating in mission trips to Haiti.

Aaron Richards


Aaron loves sharing his joy for life and diving with everyone he meets! He completed his Divemaster in 2013 especially enjoys leading new drysuit divers in cold water (we live in Ohio.) Outside of CSI, Aaron is director of Catholic Youth Summer Camp and works as a youth minister.

Matt Roehl


Matt graduated Ohio State with an aeronautical engineering degree because they did not offer scuba diving as a major. He loves to escape work whenever he can to join the CSI family at the local quarries or elsewhere. Matt is also a skydiver and flight instructor.

Marissa Stopski


Marissa started diving in 2012. She had always wanted to dive, but she didn't realize she could in Ohio until she stumbled upon CSI's website. She has been diving with them ever since. Her favorite places to dive are the waters of Bonaire and the caverns at Ginnie Springs, Florida

Paul Sherry


Originally from New Jersey, Paul has lived in Ohio since 1981. Outside of CSI, he's the IT Manager for a local Engineering firm. His first experience in diving was a Resort dive in Jamaica. Since that dive he spends every weekend either diving in Ohio quarries or instructing classes.

Melissa Silverman


Being married and the mother of two boys, Melissa loves the family atmosphere within CSI. It is not only just about the underwater world adventure but also the friendships made above the water. She is also an elementary teacher and university professor.

Mike Stahlman


In 2009 Mike started his certification through CSI at the field station in Andros, Bahamas. He quickly advanced to his instructor certification. Mike has certified hundreds of students in Ohio and at numerous caribbean resorts. It is rare to see Mike out of the water.

Mirek Standowicz

Technical Instructor

Mirek's first started diving in 1983 with the Special Forces of the Polish Armed Forces. He has logged more than 3000 dives, many of them to depths 330+ feet. Mirek was the first diver to dive the wrecks of Carl. D. Bradley (380 ft.) and Polish Destroyer ORP GROM (350 ft.). Mirek works with Police Rescue and Recovery Units conducting underwater death investigations.

Drew Tappan


Drew graduated from OSU, and is an instructor with CSI. He has been diving since 2002 and was hooked from the first breath underwater.  Drew likes to travel and dive during his travels.  His favorite places to dive are Roatan, Honduras, Hawaii, and Grand Cayman, B.W.I.

Mark Thomas


Mark has been diving since 1974 where he quickly became interested in underwater Photography. He has received grants to film underwater segments for The National Geographic/PADI Society, The Learning Channel, The Discovery Channel and the Division of Wildlife.

Steve Trenish

PSD Instructor

Steve serves as a firefighter with the Columbus Fire Department. He is also a NFPA rescue technician and works various heavy rescue assignments. Steve has been an instructor since 2004 and avidly teaches Public Safety Diving as an Instructor Trainer with PSDA & Water Rescue.

Dustin Weber


Dustin is a graduate of Ohio University and Capital University. He began diving in 2011, and since has continued his dive education through continuing education courses. When not driving his kids to soccer games and practices, you will find him diving.

Stacy Whitted


Stacy joined CSI in 2013 as a part time part of the family. She started diving in Northern Australia, and continued loving it while working in the diving industry in Key Largo. She is happy to have found a home where she can have a great time diving with amazing people!

Abra Williams Witzky


Abra started diving on the Greek island of Kos, where she fell in love with the sport.  When Abra returned to the states, she found a home with CSI where her love and passion for Scuba Diving has continued to grow. Abra can be found helping customers in the store to instructing students underwater.

Emma Woodford


Emma Woodford is a junior at Hilliard Davidson HS where she enjoys spending time with friends. Emma is currently working on her 3rd black belt in Tae Kwon Do. She was certified in 2011 and wants to pursue marine biology.

Terry Woodford


Terry Woodford has been a resident of Hilliard Ohio for the last 13 years. Terry enjoys spending time with his wife and children, and scuba diving whenever possible. His favorite places to dive are the Caribbean and Florida springs.

Tom Woodruff


Tom first became certified in 1985, and has been diving the fresh water quarries of Ohio, the ocean and springs of Florida, and the Caribbean ever since. He became an IDC staff instructor in 2011.