Dianne Gregory, M.D.
NPI 1497795462 · Internal Medicine Physician · Grand Blanc, MI
Dianne Gregory, M.D. is a Internal Medicine Physician provider in Grand Blanc, MI (NPI 1497795462).
Provider details
- NPI number
- 1497795462
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- License
- 4301076331 (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
20 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
- 2006-06-07
- Last updated
- 2007-07-09
Frequently asked questions
- What is Dianne Gregory's NPI number?
- Dianne Gregory's National Provider Identifier (NPI) is 1497795462, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dianne Gregory's specialty?
- Dianne Gregory is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Dianne Gregory located?
- Dianne Gregory's practice location on file with NPPES is 8235 Holly Rd, Grand Blanc, MI 48439-2441.
- What is Dianne Gregory's phone number?
- The practice phone number listed in the NPPES registry for Dianne Gregory is (810) 694-9110.
- Is Dianne Gregory's NPI active?
- Yes — Dianne Gregory's NPI (1497795462) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.