Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. STEVEN ROY KAYSER PHARMD
NPI 1821098997
Pharmacist - Pharmacotherapy in San Francisco, CA

Q: What is Steven Kayser's NPI number?

The NPI number for Steven Kayser is 1821098997. It was assigned to this individual provider in the NPPES registry on July 29, 2005.

Q: What is Steven Kayser's specialty?

The primary specialty registered for this NPI is Pharmacist, specializing in Pharmacotherapy, with taxonomy code 1835P1200X.

Q: When was this NPI record last updated?

The NPPES record for Steven Kayser was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 30 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since July 29, 2005

521 PARNASSUS AVENUE, BOX 0622, SAN FRANCISCO, CA 94143(415) 476-4540(415) 476-6632 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Dr. Steven Roy Kayser Pharmd NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. STEVEN ROY KAYSER PHARMD (NPI 1821098997) is an individual pharmacotherapy provider in San Francisco, California, licensed in California (26574) and active in the NPI registry since July 2005.

NPPES Registry Identity

NPI1821098997

Entity TypeIndividualMale

Primary Taxonomy1835P1200X

Provider Legal NameDR. STEVEN ROY KAYSERCredential: PHARMD

Location Address521 PARNASSUS AVENUE, BOX 0622San Francisco, CA 94143-0001

Mailing Address521 Parnassus Avenue, Box 0622San Francisco, CA 94143-0001 · (415) 476-4540 · Fax (415) 476-6632

Phone(415) 476-4540

Fax(415) 476-6632

Sole ProprietorNo

Enumeration DateJuly 29, 2005

Last NPPES UpdateJuly 13, 2026

✔ NPI 1821098997 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPharmacist · PharmacotherapyPharmacy Service Providers

Taxonomy Code1835P1200X

License✔ Licensed in CA · 26574

Definition

A licensed pharmacist who has demonstrated specialized knowledge and skill in optimizing pharmacotherapeutic care of patients, by developing, implementing, monitoring, and modifying complex treatment plans, providing advanced level education and consultation, and collaborating with other health professionals in the management of therapy.

521 PARNASSUS AVENUE, BOX 0622, San Francisco, CA 94143

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Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Steven Kayser's NPI number?

The NPI number for Steven Kayser is 1821098997. It was assigned to this individual provider in the NPPES registry on July 29, 2005.

Where is Steven Kayser located?

Steven Kayser practices at 521 Parnassus Avenue, Box 0622, San Francisco, CA 94143. The listed phone number is (415) 476-4540.

What is Steven Kayser's specialty?

The primary specialty registered for this NPI is Pharmacist, specializing in Pharmacotherapy, with taxonomy code 1835P1200X.

When was this NPI record last updated?

The NPPES record for Steven Kayser was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 30 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.