Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alexander John Wolf, MD

Pediatric Nephrology Physician in San Francisco, CA · enumerated 2020.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1992327688

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Registry record

Entity type Individual (Type 1)

Name Dr. Alexander John Wolf

Credential MD

Sex Male

Practice address 1825 4th St Fl 6, San Francisco, CA, 94143

Phone (415) 476-2423

Enumeration date May 15, 2020

Last updated in NPPES Jun 2, 2026

Taxonomy & licenses

2080P0210X Pediatric Nephrology Physician Allopathic & Osteopathic Physicians · License A186139 (CA) Primary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License MT219928 (PA) Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License A186139 (CA) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How do I verify Alexander Wolf's NPI record?

Cross-check NPI 1992327688 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1992327688 active?

Yes, as of the latest NPPES snapshot, NPI 1992327688 is active (record last updated 2026-06-02).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-02.