Stephen Hartz, M.D.
NPI 1669492757 · General Practice Physician · Flagstaff, AZ
Stephen Hartz, M.D. is a General Practice Physician provider in Flagstaff, AZ (NPI 1669492757).
Provider details
- NPI number
- 1669492757
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 12105 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Emergency Medical Service Providers
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
- 2006-07-20
- Last updated
- 2024-07-16
- Certified
- 2024-07-16
Frequently asked questions
- What is Stephen Hartz's NPI number?
- Stephen Hartz's National Provider Identifier (NPI) is 1669492757, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Hartz's specialty?
- Stephen Hartz is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Hartz located?
- Stephen Hartz's practice location on file with NPPES is 1200 N Beaver St, Flagstaff, AZ 86001-3118.
- What is Stephen Hartz's phone number?
- The practice phone number listed in the NPPES registry for Stephen Hartz is (928) 779-3366.
- Is Stephen Hartz's NPI active?
- Yes — Stephen Hartz's NPI (1669492757) is active in the NPPES registry as of the last update on 2024-07-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.