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Gregory Hays, M.D.
NPI 1003980517 · Emergency Medicine Physician · Detroit, MI
Gregory Hays, M.D. is a Emergency Medicine Physician provider in Detroit, MI (NPI 1003980517).
Provider details
- NPI number
- 1003980517
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 068766 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
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
Henry Ford Health System
2799 West Grand Boulevard
Detroit, MI 48202
Phone: (313) 916-2436
Approximate (ZIP-level) locationGet directions
Mailing address
Henry Ford Health System
Detroit, MI 48202
Registry dates
- Enumerated
- 2006-11-17
- Last updated
- 2007-07-08
Frequently asked questions
- What is Gregory Hays's NPI number?
- Gregory Hays's National Provider Identifier (NPI) is 1003980517, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Hays's specialty?
- Gregory Hays is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Hays located?
- Gregory Hays's practice location on file with NPPES is Henry Ford Health System, Detroit, MI 48202.
- What is Gregory Hays's phone number?
- The practice phone number listed in the NPPES registry for Gregory Hays is (313) 916-2436.
- Is Gregory Hays's NPI active?
- Yes — Gregory Hays's NPI (1003980517) 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.