Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Gary Louis Parenteau, MD

Individual provider Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · NPI 1508841172

Gary Louis Parenteau, MD is a Thoracic Surgery in Lima, Ohio. Graduated from University of Michigan Medical School in 1986, 40 years ago. Practices with Mercy Health Physicians Lima Specialty Care LLC, a 255-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Ohio.

Years since qualifying
40
Trained at
University of Michigan Medical School
Licensed in
OH
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

730 W Market St Ste 2K
Lima, OH 45801-4602
Phone: (419) 996-4011
Fax: (419) 996-4012
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 1900 S Main St, Findlay, OH 45840-1214 — (419) 423-3188
  • 3000 Arlington Ave, Toledo, OH 43614-2598 — (419) 383-5150

Specialties & licences

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (primary) Taxonomy 208G00000X · Licence 35071085P (OH)

Record details

NPI number1508841172
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 7, 2005
Last updated in NPPESNovember 5, 2020
Certification dateNovember 5, 2020

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyTHORACIC SURGERY
Medical schoolUNIVERSITY OF MICHIGAN MEDICAL SCHOOL
Graduated 1986 (40 years in practice)
Group practice Mercy Health Physicians Lima Specialty Care Llc — 255 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Lima