Michael E Gruber MD PC
Michael E Gruber MD PC is a healthcare organization registered as Internal Medicine Physician in Bay City, MI, holding Type 2 (organization) NPI 1861687006 since 2007. The authorized official on file is Michael Gruber, Physician.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1861687006 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Michael E Gruber MD PC |
| Practice address | 200 S WENONA ST, Bay City, MI, 48706 |
| Phone | 9898926587 |
| Fax | 9898923140 |
| Enumeration date | 2007-09-11 |
| Last updated in NPPES | 2009-12-20 |
Authorized official
| Name | Michael Gruber |
|---|---|
| Title | Physician |
| Phone | 9898926587 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207R00000X | Internal Medicine Physician | Primary | — | — |
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 0Z91190 | Other | MI | BCBSM GROUP |
| MG036542 | Other | MI | BCBSM LICENSE NUMBER |
Copy-ready billing details
Provider: Michael E Gruber MD PC NPI: 1861687006 Taxonomy: 207R00000X (Internal Medicine Physician) Address: 200 S WENONA ST, Bay City, MI, 48706
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1043295066 | Algimantas Maciulis | Individual | Rheumatology Physician | Bay City, MI |
| 1689650103 | Margarethe Maciulis | Individual | Endocrinology, Diabetes & Metabolism Physician | Bay City, MI |
| 1255393401 | Theresa Weaver | Individual | Professional Counselor | Bay City, MI |
| 1255393153 | Cynthia Hack | Individual | Clinical Social Worker | Bay City, MI |
| 1770531451 | Visiting Nurse Services of Michigan | Organization | Durable Medical Equipment & Medical Supplies | Bay City, MI |
| 1154355477 | Russell Struble | Individual | Family Medicine Physician | Bay City, MI |
| 1669490769 | Subbarao Chavali | Individual | Cardiovascular Disease Physician | Bay City, MI |
| 1831105956 | James Guigelaar | Individual | Internal Medicine Physician | Bay City, MI |
Verify this record
Cross-check NPI 1861687006 against the authoritative CMS record: view Michael E Gruber MD PC on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
What is the NPI number for Michael E Gruber MD PC?
Who is the authorized official for Michael E Gruber MD PC?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2009-12-20.