Gary Louis Parenteau, MD
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Lima, OH
Gary Louis Parenteau, MD is a thoracic surgery (cardiothoracic vascular surgery) physician with a practice address in Lima, Ohio, and NPI 1508841172, issued on Dec 7, 2005. Check the license (Ohio 35071085P, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Gary Louis Parenteau
- Credential
- MD
- Primary taxonomy
- Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician 208G00000X
- License number
- 35071085P OH
Self-reported in NPPES; status is on the state search - Practice location
- 730 W Market St Ste 2K, Lima, OH 45801
- Phone
- (419) 996-4011
- Enumerated
- Dec 7, 2005
- Record last updated
- Nov 5, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (419) 996-4012
- Medicaid ID
- 0316876 OH
- Medicare enrollment
- Enrolled (PECOS I20060213000204); accepts Medicare assignment
- Medical or professional school
- University Of Michigan Medical School, 1986
- Entity
- Type 1 · individual
8 nearest thoracic surgery (cardiothoracic vascular surgery) physician records → All 310 in Ohio → Look up another NPI →
Also registered at 730 W Market St Ste 2K
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Madison Bowman, MSN, APRN, AGPCNP-CGerontology Nurse Practitioner1255187969
- Mark Cooper, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1346376613
- Melinda Harshfield, CNPFamily Nurse Practitioner1922242270
- Jay Kim, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1821077553
- Madison LanghalsPhysician Assistant1508656638
- Bharat Marwaha, MDCardiovascular Disease Physician1407267941
Verify Gary Louis Parenteau in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35071085PCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Mercy Health Physicians Lima Specialty Care LLCLima, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gary Louis Parenteau among 310 thoracic surgery (cardiothoracic vascular surgery) physician records in Ohio
Gary Louis Parenteau, MD is one of 310 thoracic surgery (cardiothoracic vascular surgery) physician records with a practice address in Ohio. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 87% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1986 · median 1998 among the 188 with a school on file
- Record last updated2020 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208G00000X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician providers in Ohio
There are 310 thoracic surgery (cardiothoracic vascular surgery) physician records in Ohio.
All 310 in Ohio → Every provider in Lima → Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician nationwide →
The 8 thoracic surgery (cardiothoracic vascular surgery) physician records with the nearest ZIP codes
- Mark Cooper, M.D.Lima, OH 458011346376613
- Jay Kim, MDLima, OH 458011821077553
- Mario Matos-Cruz, M.D.Lima, OH 458011588868616
- John Sirak, M.D.Lima, OH 458011568418622
- Nnamdi Azie, M.D.Lima, OH 458041851366892
- Christopher Clancy, M.D.Lima, OH 458041427214790
- Farzin Fotouhi, M.D.Lima, OH 458041679562920
- Kwabena Mawulawde, M.D.Lima, OH 458041548570567
Common questions
What is Gary Louis Parenteau, MD's NPI number?
Gary Louis Parenteau, MD's National Provider Identifier (NPI) is 1508841172, issued on Dec 7, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Gary Louis Parenteau, MD located?
The NPPES record lists a practice address at 730 W Market St Ste 2K, Lima, OH, 45801. Phone: (419) 996-4011. Providers update this record themselves, so call before visiting.
How can I verify Gary Louis Parenteau, MD's license?
NPPES lists Ohio license number 35071085P, as entered by the provider. Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.