James Duzak, NP
NPI 1437128170 · Nurse Practitioner · San Francisco, CA
James Duzak, NP is a Nurse Practitioner provider in San Francisco, CA (NPI 1437128170).
Provider details
- NPI number
- 1437128170
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Male
- License
- 7544 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
- 2006-03-15
- Last updated
- 2007-07-08
Frequently asked questions
- What is James Duzak's NPI number?
- James Duzak's National Provider Identifier (NPI) is 1437128170, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Duzak's specialty?
- James Duzak is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is James Duzak located?
- James Duzak's practice location on file with NPPES is 1600 Holloway, San Francisco, CA 94132-4200.
- What is James Duzak's phone number?
- The practice phone number listed in the NPPES registry for James Duzak is (415) 338-1351.
- Is James Duzak's NPI active?
- Yes — James Duzak's NPI (1437128170) 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.