Ross Tanzer, D.O.
Individual provider Active NPI Anesthesiology Physician · Grand Rapids, MI
NPI 1508362153 · NPPES record last updated Nov 5, 2025
Key facts
- NPI
- 1508362153
- Entity type
- Individual (NPI type 1)
- Primary specialty
- Anesthesiology Physician 207L00000X
- License
- 5101026733 (MI)
- Practice address
- 1840 Wealthy St SE
Grand Rapids, MI 49506-2921 - Phone
- (616) 774-7870
- NPI assigned
- Apr 3, 2018
- Sex
- Male
- Sole proprietor
- No
Organizations & group practices 13
Hospital & facility affiliations 2
Medicare Care Compare profile
- Specialty
- Anesthesiology
- Education
- West Virginia School of Osteopathic Medicine, 2018
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
- Spectrum Health Primary Care Partners
Sparrow Carson Hospital
Practice addresses (Care Compare)
1840 Wealthy St SE
Corewell Health Medical Group West
Grand Rapids, MI 49506-2921
Phone (616) 885-5000
406 E Elm St
Carson City, MI 48811-9693
Phone (517) 584-3131
4444 Kalamazoo Ave SE
200 Corewell Health Medical Group West
Kentwood, MI 49508-4600
Phone (616) 391-5600
80 68TH St SE
Grand Rapids, MI 49548-6980
80 68TH St SE FL
1 Corewell Health Medical Group West
Grand Rapids, MI 49548-6980
Phone (616) 267-8950
Hospital & facility affiliations
- Spectrum Health
Medicare participation
- Medicare fee-for-service enrollment
- Enrolled in MI
- Eligible to order & refer
- Part B services: Yes · DME: Yes · Home health: Yes · Power mobility devices: Yes · Hospice: Yes
Medicare enrollment records
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| I20220720003326 | MI | Practitioner - Anesthesiology | 0143601229 | Reassigns benefits to 3 organizations |
National Provider Directory
- Medicare enrollment (NPD)
- Yes
- Credentials
- Doctor of Osteopathy
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Sparrow Carson Hospital | Current | Accepting new patients | |
| Spectrum Health Primary Care Partners | Current | Accepting new patients | |
| Spectrum Health Primary Care Partners | Anesthesiology | Current |
Accepting new patients |
| Edward W. Sparrow Hospital Association | Anesthesiology | Current |
Accepting new patients |
| Sparrow Carson Hospital | Anesthesiology | Current |
Accepting new patients |
| Edward W Sparrow Hospital Association | Current |
Accepting new patients | |
| Sparrow Carson Hospital | Current |
Accepting new patients |
Locations
8175 Reliable Pkwy
Chicago, IL 60686
406 E Elm St
Carson City, MI 48811
Phone (517) 584-3131
100 Michigan St NE
Grand Rapids, MI 49503
Phone (616) 391-1680
1840 Wealthy St SE
Grand Rapids, MI 49506
Phone (616) 391-1730
100 Michigan St NE
#845
Grand Rapids, MI 49503
Phone (616) 391-8242
4444 Kalamazoo Ave SE
Ste 200
Kentwood, MI 49508
Phone (616) 391-5600
80 68th St SE
Kentwood, MI 49548
Phone (616) 391-8220
1215 E Michigan Ave
Lansing, MI 48912
Phone (517) 336-8080
2909 E Grand River Ave
Ste 201
Lansing, MI 48912
Phone (517) 253-3050
5900 Byron Center Ave SW
Wyoming, MI 49519
Phone (616) 252-3243
Interoperability endpoints
- rtanzer484454@epic00.corewelldirect.org
Specialties & licenses
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Anesthesiology Physician | 207L00000X | 5101026733 | MI | Yes |
Addresses
Primary practice location
1840 Wealthy St SE
Grand Rapids, MI 49506-2921
Mailing address
100 Michigan St NE
MC 845
Grand Rapids, MI 49503-2560
Electronic endpoints
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| FHIR URL | https://epicarr02.spectrumhealth.org/EpicFHIR/api/FHIR/R4/ | ||
| Direct Messaging Address | rtanzer484454@epic00.corewelldirect.org |
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- Pamela Tanui
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- Angelina Jatzil Tapia
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All providers in Grand Rapids, MI · Anesthesiology Physician in Michigan
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Record last updated by the provider on Nov 5, 2025. Information in NPPES is self-reported and not verified by CMS.
- NUCC Health Care Provider Taxonomy: specialty names.
- Medicare Fee-For-Service Public Provider Enrollment (CMS/PECOS): enrollments, PAC IDs and benefit reassignments.
- Order and Referring (CMS).
- Medicare Care Compare provider data (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.