NPPES file of Aug 9, 2026

Ross Tanzer, D.O.

Anesthesiology Physician · Grand Rapids, MI

Ross Tanzer, D.O. is an anesthesiology physician with a practice address in Grand Rapids, Michigan, and NPI 1508362153, issued on Apr 3, 2018. Check the license (Michigan 5101026733, 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
1508362153
Name
Ross Tanzer
Credential
D.O.
Primary taxonomy
Anesthesiology Physician 207L00000X
License number
5101026733 MI
Self-reported in NPPES; status is on the state search
Practice location
1840 Wealthy St SE, Grand Rapids, MI 49506
Phone
(616) 774-7870
Enumerated
Apr 3, 2018
Record last updated
Nov 5, 2025
Medicare enrollment
Enrolled (PECOS I20220720003326); accepts Medicare assignment
Medical or professional school
West Virginia School Of Osteopathic Medicine, 2018
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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8 nearest anesthesiology physician records → All 1,720 in Michigan → Look up another NPI →

Also registered at 1840 Wealthy St SE

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

  1. Ryan Allor, MDAnesthesiology Physician1891130670
  2. Katelyn Baker-Sulek, OTR/L, CTRSOccupational Therapist1619544434
  3. Ashley Barron, DPTPhysical Therapist1356015598
  4. Jayaseeli Bastin, M.D.Internal Medicine Physician1437365897
  5. Alexander Behm, M.D.Anesthesiology Physician1669811535
  6. Sarah Behrens, PHYSICAL THERAPISTPhysical Therapist1962905406

Verify Ross Tanzer 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 5101026733    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 2 group practices

  1. Sparrow Carson HospitalCarson City, MI
  2. Spectrum Health Primary Care PartnersGrand Rapids, MI

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

Ross Tanzer among 1,720 anesthesiology physician records in Michigan

Ross Tanzer, D.O. is one of 1,720 anesthesiology physician records with a practice address in Michigan. 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 2018, is newer than 85% of them.

  • NPI issued2018 · 85% of these records are older, 12% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 65% of these records are
  • Graduated2018 · median 2006 among the 1,126 with a school on file
  • Record last updated2025 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Anesthesiology Physician providers in Michigan

There are 1,720 anesthesiology physician records in Michigan.

All 1,720 in Michigan → Every provider in Grand Rapids → Anesthesiology Physician nationwide →

The 8 anesthesiology physician records with the nearest ZIP codes

  1. Ryan Allor, MDGrand Rapids, MI 495061891130670
  2. Alexander Behm, M.D.Grand Rapids, MI 495061669811535
  3. Kevin Giles, MDGrand Rapids, MI 495061861531899
  4. Eric Radel, D.O.Grand Rapids, MI 495061578694204
  5. Julie Rogers, MDGrand Rapids, MI 495061699061408
  6. Barton Seymour, DOGrand Rapids, MI 495061851371843
  7. Joshua Suderman, MDGrand Rapids, MI 495061508092164
  8. Lisa Weaver, M.D.Grand Rapids, MI 495061588896054

Common questions

What is Ross Tanzer, D.O.'s NPI number?

Ross Tanzer, D.O.'s National Provider Identifier (NPI) is 1508362153, issued on Apr 3, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Ross Tanzer, D.O. located?

The NPPES record lists a practice address at 1840 Wealthy St SE, Grand Rapids, MI, 49506. Phone: (616) 774-7870. Providers update this record themselves, so call before visiting.

How can I verify Ross Tanzer, D.O.'s license?

NPPES lists Michigan license number 5101026733, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.