James Leyden
NPI 1598556292 · Acute Care Nurse Practitioner · San Francisco, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Leyden is a Acute Care Nurse Practitioner provider in San Francisco, CA (NPI 1598556292).
Provider details
- NPI number
- 1598556292
- Entity type
- Individual
- Primary specialty
- Acute Care Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 95033537 (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
1 yr 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
- 2025-05-14
- Last updated
- 2025-05-14
- Certified
- 2025-05-14
Frequently asked questions
- What is James Leyden's NPI number?
- James Leyden's National Provider Identifier (NPI) is 1598556292, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Leyden's specialty?
- James Leyden is listed in the NPPES registry with a primary specialty of Acute Care Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is James Leyden located?
- James Leyden's practice location on file with NPPES is 96 Jersey St Apt 4, San Francisco, CA 94114-3929.
- What is James Leyden's phone number?
- The practice phone number listed in the NPPES registry for James Leyden is (773) 957-5490.
- Does James Leyden accept Medicare?
- James Leyden is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Leyden's NPI active?
- Yes — James Leyden's NPI (1598556292) is active in the NPPES registry as of the last update on 2025-05-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.