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John Hartzell, M.D.
NPI 1851383921 · Surgery Physician · Grosse Pointe, MI
John Hartzell, M.D. is a Surgery Physician provider in Grosse Pointe, MI (NPI 1851383921).
Provider details
- NPI number
- 1851383921
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 4301022886 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
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
468 Cadieux Rd
Grosse Pointe, MI 48230-1507
Phone: (313) 473-1968
Street-level locationGet directions
Mailing address
26901 Beaumont Blvd
Southfield, MI 48033-3849
Registry dates
- Enumerated
- 2005-08-16
- Last updated
- 2023-09-20
- Certified
- 2023-09-20
Frequently asked questions
- What is John Hartzell's NPI number?
- John Hartzell's National Provider Identifier (NPI) is 1851383921, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Hartzell's specialty?
- John Hartzell is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is John Hartzell located?
- John Hartzell's practice location on file with NPPES is 468 Cadieux Rd, Grosse Pointe, MI 48230-1507.
- What is John Hartzell's phone number?
- The practice phone number listed in the NPPES registry for John Hartzell is (313) 473-1968.
- Is John Hartzell's NPI active?
- Yes — John Hartzell's NPI (1851383921) is active in the NPPES registry as of the last update on 2023-09-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.