Michael E Gruber MD PC
NPI 1861687006 · Internal Medicine Physician · Bay City, MI
Michael E Gruber MD PC is a Internal Medicine Physician organization in Bay City, MI (NPI 1861687006).
Provider details
- NPI number
- 1861687006
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Michael Gruber, Physician(989) 892-6587
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-09-11
- Last updated
- 2009-12-20
Frequently asked questions
- What is Michael E Gruber MD PC's NPI number?
- Michael E Gruber MD PC's National Provider Identifier (NPI) is 1861687006, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Michael E Gruber MD PC?
- Michael E Gruber MD PC is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael E Gruber MD PC located?
- Michael E Gruber MD PC's practice location on file with NPPES is 200 S Wenona St, Bay City, MI 48706-8820.
- What is Michael E Gruber MD PC's phone number?
- The practice phone number listed in the NPPES registry for Michael E Gruber MD PC is (989) 892-6587.
- Who is the authorized official for Michael E Gruber MD PC?
- The authorized official listed on Michael E Gruber MD PC's NPPES record is Michael Gruber, Physician. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Michael E Gruber MD PC's NPI active?
- Yes — Michael E Gruber MD PC's NPI (1861687006) is active in the NPPES registry as of the last update on 2009-12-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.