Stephen Nathan, MD
NPI 1356439723 · Internal Medicine Physician · Phoenix, AZ
Enrolled with Medicare as Practitioner - Pulmonary Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Nathan, MD is a Internal Medicine Physician provider in Phoenix, AZ (NPI 1356439723).
Provider details
- NPI number
- 1356439723
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 8883 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
- 2006-10-11
- Last updated
- 2017-04-17
Frequently asked questions
- What is Stephen Nathan's NPI number?
- Stephen Nathan's National Provider Identifier (NPI) is 1356439723, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Nathan's specialty?
- Stephen Nathan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Nathan located?
- Stephen Nathan's practice location on file with NPPES is 9225 N 3rd St, Phoenix, AZ 85020-2439.
- What is Stephen Nathan's phone number?
- The practice phone number listed in the NPPES registry for Stephen Nathan is (602) 445-0751.
- Does Stephen Nathan accept Medicare?
- Stephen Nathan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Nathan's NPI active?
- Yes — Stephen Nathan's NPI (1356439723) is active in the NPPES registry as of the last update on 2017-04-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.