James Grekin, D.O.
NPI 1740485036 · Internal Medicine Physician · Farmington Hills, MI
James Grekin, D.O. is a Internal Medicine Physician provider in Farmington Hills, MI (NPI 1740485036).
Provider details
- NPI number
- 1740485036
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 5101005064 (MI)
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
19 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
- 2007-06-18
- Last updated
- 2007-07-08
Frequently asked questions
- What is James Grekin's NPI number?
- James Grekin's National Provider Identifier (NPI) is 1740485036, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Grekin's specialty?
- James Grekin is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is James Grekin located?
- James Grekin's practice location on file with NPPES is 36708 Tanglewood Ln, Farmington Hills, MI 48331-1946.
- What is James Grekin's phone number?
- The practice phone number listed in the NPPES registry for James Grekin is (248) 788-5033.
- Is James Grekin's NPI active?
- Yes — James Grekin's NPI (1740485036) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.