NPPES file of Aug 9, 2026

Constance Leahy, MD

Obstetrics & Gynecology Physician · Grand Rapids, MI

Constance Leahy, MD is an obstetrics & gynecology physician with a practice address in Grand Rapids, Michigan, and NPI 1164477204, issued on May 24, 2006. Check the license (Michigan 4301061615, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1164477204
Name
Constance Leahy
Credential
MD
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
4301061615 MI
Self-reported in NPPES; status is on the state search
Practice location
309 Jefferson Ave SE, Grand Rapids, MI 49503
Phone
(616) 685-8750
Enumerated
May 24, 2006
Record last updated
Jun 29, 2009 (not updated in 17 years: call before relying on the address or phone)
Fax
(616) 685-8002
Medicaid IDs
4893290 MI
3371147 MI
4110726 MI
Medicare enrollment
Enrolled (PECOS I20060915000515); accepts Medicare assignment
Medical or professional school
Southern Illinois University School Of Medicine, 1993
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 309 Jefferson Ave SE

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. John Hartmann, MDObstetrics & Gynecology Physician1366496499
  2. Pravin Patel, MDOccupational Medicine Physician1164622411
  3. Grace Vaughn, PA-CFamily Medicine Physician1801600218

Verify Constance Leahy in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
    Search for license 4301061615
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Michigan license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Advantage Health/saint Mary's Medical GroupCaledonia, MI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Constance Leahy among 1,776 obstetrics & gynecology physician records in Michigan

Constance Leahy, MD is one of 1,776 obstetrics & gynecology physician records with a practice address in Michigan. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 13% of them.

  • NPI issued2006 · 13% of these records are older, 57% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 56% of these records are
  • Graduated1993 · median 2007 among the 1,003 with a school on file
  • Record last updated2009 · 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 207V00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

183 obstetrics & gynecology physician records list a practice address in Grand Rapids

They are 183 of the 18,005 NPPES records with a practice address in Grand Rapids, and 1,776 obstetrics & gynecology physician records in Michigan.

The 8 obstetrics & gynecology physician records with the nearest ZIP codes

  1. Michelle Backus Colwell, M.D.Grand Rapids, MI 495031124011531
  2. Adam Blickley, MDGrand Rapids, MI 495031679554679
  3. Jane Cottingham, MDGrand Rapids, MI 495031467442053
  4. Jeffrey Frank, MDGrand Rapids, MI 495031871584466
  5. Robyn Hubbard, MDGrand Rapids, MI 495031063403657
  6. Michelle Klyn, MDGrand Rapids, MI 495031235133992
  7. David Kreuze, M.D.Grand Rapids, MI 495031184614836
  8. Calvin Leazenby, M.DGrand Rapids, MI 495031588668248

Common questions

What is Constance Leahy, MD's NPI number?

Constance Leahy, MD's National Provider Identifier (NPI) is 1164477204, issued on May 24, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Constance Leahy, MD located?

The NPPES record lists a practice address at 309 Jefferson Ave SE, Grand Rapids, MI, 49503. Phone: (616) 685-8750. Providers update this record themselves, so call before visiting.

How can I verify Constance Leahy, MD's license?

NPPES lists Michigan license number 4301061615, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. 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.