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GARY LOUIS PARENTEAU MD
NPI 1508841172
Thoracic Surgery (Cardiothoracic Vascular Surgery) in Lima, OH

Active since December 07, 2005PECOS EnrolledAccepts Medicare Assignment
730 W MARKET ST STE 2K, LIMA, OH 45801(419) 996-4011(419) 996-4012 Get Directions Write a Review

NPPES record last updated: November 5, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 5, 2020, Apr 4, 2019 (2 updates tracked since 2019).

About Gary Louis Parenteau Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GARY LOUIS PARENTEAU MD (NPI 1508841172) is an individual thoracic surgery (cardiothoracic vascular surgery) provider in Lima, Ohio, licensed in Ohio (35071085P) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS, is affiliated with Mercy Health-st Rita's Medical Center, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1508841172
Entity TypeIndividualMale
Primary Taxonomy208G00000X
Provider Legal NameGARY LOUIS PARENTEAUCredential: MD
Location Address730 W MARKET ST STE 2KLima, OH 45801-4602
Mailing Address730 W Market St Ste 2kLima, OH 45801-4602 · (419) 996-4011 · Fax (419) 996-4012
Phone(419) 996-4011
Fax(419) 996-4012
Sole ProprietorNo
Medical School CMSUniversity Of Michigan Medical SchoolGraduated 1986
Enumeration DateDecember 7, 2005
Last NPPES UpdateNovember 5, 20202 updates tracked since enumeration
NPPES CertifiedNovember 5, 2020
✔ NPI 1508841172 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyThoracic Surgery (Cardiothoracic Vascular Surgery)Allopathic & Osteopathic Physicians
Taxonomy Code208G00000X
License✔ Licensed in OH · 35071085P
Definition
A thoracic surgeon provides the operative, perioperative and critical care of patients with pathologic conditions within the chest. Included is the surgical care of coronary artery disease, cancers of the lung, esophagus and chest wall, abnormalities of the trachea, abnormalities of the great vessels and heart valves, congenital anomalies, tumors of the mediastinum and diseases of the diaphragm. The management of the airway and injuries of the chest is within the scope of the specialty.
730 W MARKET ST STE 2K, Lima, OH 45801
Open in Google Maps ↗

Secondary Practice Locations 2

Location 13000 Arlington AveToledo, OH 43614-2598 · Phone (419) 383-5150 · Fax (419) 383-3149
Location 21900 S Main St, CDS Room 3349Findlay, OH 45840-1214 · Phone (419) 423-3188

Other Identifiers 1

Medicaid0316876OH

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Antidote Health Plan of Ohio, Inc., CareSource, MedMutual and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Gary Louis Parenteau Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3274548243
PECOS Enrollment IDI20060213000204
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

4

Medicare enrollment records show Gary Parenteau reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mercy Health Physicians Lima Specialty Care LLC
1.3 mi
Surgery
830 W HIGH ST STE 206
Lima, OH 45801
  • Reassigned Medicare billing, Ohio enrollment
  • 439 clinicians in this Medicare group
NPI 1518589803 (888) 696-3541
University Of Toledo Physicians, LLC
66 mi
Sports Medicine
3000 ARLINGTON AVE
Toledo, OH 43614
  • Reassigned Medicare billing, Ohio enrollment
  • 522 clinicians in this Medicare group
NPI 1215240676 (419) 383-3761
Mercy Health Physicians North Specialty Care LLC
70 mi
Surgery
2200 JEFFERSON AVE
Toledo, OH 43604
  • Reassigned Medicare billing, Ohio enrollment
  • 690 clinicians in this Medicare group
NPI 1306468418 (888) 696-3541
Mercy Health Physicians-North LLC
70 mi
Family Medicine
2200 JEFFERSON AVE
Toledo, OH 43604
  • Reassigned Medicare billing, Ohio enrollment
  • 457 clinicians in this Medicare group
NPI 1609000769 (419) 871-6359

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Mercy Health-St Rita's Medical Center

Acute Care Hospitals · Lima, OH
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number360066
Location730 West Market StreetLima, OH 45801 · Allen County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 45801 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$166.65 typical visit price
range $54.34 – $166.65
Typical copayment $41.66 (range $13.58 – $41.66)
Most-billed visit code 99205
Established Patient
$68.07 typical visit price
range $17.10 – $135.40
Typical copayment $17.01 (range $4.27 – $33.85)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 15

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CHERYL LYNN MOTTER CNP
Nurse Practitioner
730 W MARKET ST STE 2K
LIMA, OH 45801
Allen County (419) 996-5852
CONNOR MORTIMER
Physician Assistant
730 W MARKET ST STE 2K
LIMA, OH 45801
Allen County (419) 996-5852
MADISON BOWMAN MSN, APRN, AGPCNP-C
Nurse Practitioner (Gerontology)
730 W MARKET ST STE 2K
LIMA, OH 45801
Allen County (419) 996-2714
SANDEEP MAHESH PATEL MD
Internal Medicine (Cardiovascular Disease)
730 W MARKET ST STE 2K
LIMA, OH 45801
Allen County (419) 996-5852
DR. MARK HAYDEN COOPER M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery)
730 W MARKET ST STE 2K
LIMA, OH 45801
Allen County (419) 996-4011
BHARAT MARWAHA MD
Internal Medicine (Cardiovascular Disease)
730 W MARKET ST STE 2K
LIMA, OH 45801
Allen County (419) 996-5852
MADISON MARIE MILLER
Physician Assistant
730 W MARKET ST STE 2K
LIMA, OH 45801
Allen County (419) 996-5852
DR. JOSEPH MICHAEL ARCIDI JR. M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery)
730 W MARKET ST STE 2K
LIMA, OH 45801
Allen County (419) 996-4011

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gary Parenteau's NPI number?

The NPI number for Gary Parenteau is 1508841172. It was assigned to this individual provider in the NPPES registry on December 7, 2005.

Where is Gary Parenteau located?

Gary Parenteau practices at 730 W Market St Ste 2K, Lima, OH 45801. The listed phone number is (419) 996-4011.

What is Gary Parenteau's specialty?

The primary specialty registered for this NPI is Thoracic Surgery (Cardiothoracic Vascular Surgery) with taxonomy code 208G00000X.

Is Gary Parenteau enrolled in Medicare?

Yes. Gary Parenteau is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Gary Parenteau's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gary Parenteau reassigns Medicare benefits to 4 organizations: Mercy Health Physicians Lima Specialty Care LLC (Lima, OH), University Of Toledo Physicians, LLC (Toledo, OH), Mercy Health Physicians North Specialty Care LLC (Toledo, OH) and Mercy Health Physicians-North LLC (Toledo, OH). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Gary Parenteau's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gary Parenteau accept?

Health plans from Antidote Health Plan of Ohio, Inc., CareSource, MedMutual, Molina Healthcare and Oscar Health Insurance and 1 other insurer list Gary Parenteau as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Gary Parenteau affiliated with any hospitals?

According to CMS data, Gary Parenteau is affiliated with Mercy Health-St Rita's Medical Center.

When was this NPI record last updated?

The NPPES record for Gary Parenteau was last updated on November 5, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.