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

DR. ARJUN RUSTAGI M.D., PH.D.
NPI 1346635083
Internal Medicine - Infectious Disease in San Francisco, CA

Q: What is Arjun Rustagi's NPI number?

The NPI number for Arjun Rustagi is 1346635083. It was assigned to this individual provider in the NPPES registry on March 31, 2015.

Q: What is Arjun Rustagi's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Q: When was this NPI record last updated?

The NPPES record for Arjun Rustagi was last updated on July 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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 March 31, 2015

76.5/100

CMS Quality Rating

4150 CLEMENT ST, SAN FRANCISCO, CA 94121(415) 221-4810 Get Directions Write a Review

NPPES record last updated: July 29, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 29, 2026, Apr 16, 2024, Jan 25, 2022 and 1 more (4 updates tracked since 2021).

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About Dr. Arjun Rustagi M.d., Ph.d. NPPES

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

DR. ARJUN RUSTAGI M.D., PH.D. (NPI 1346635083) is an individual infectious disease provider in San Francisco, California, licensed in California (A145156) and active in the NPI registry since March 2015.

NPPES Registry Identity

NPI1346635083

Entity TypeIndividualMale

Primary Taxonomy207RI0200X

Provider Legal NameDR. ARJUN RUSTAGICredential: M.D., PH.D.

Location Address4150 CLEMENT STSan Francisco, CA 94121-1563

Mailing Address4150 Clement StSan Francisco, CA 94121-1563 · (415) 221-4810

Phone(415) 221-4810

Sole ProprietorNo

Enumeration DateMarch 31, 2015

Last NPPES UpdateJuly 29, 20264 updates tracked since enumeration

NPPES CertifiedJuly 29, 2026

✔ NPI 1346635083 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RI0200X

License✔ Licensed in CA · A145156

Definition

An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.

Also ListedInternal MedicineTaxonomy 207R00000X · License A145156 (CA)

4150 CLEMENT ST, San Francisco, CA 94121

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Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

76.5/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

74.31

Promoting Interoperability

100

Improvement Activities

Cost

43.95

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MR. SHANNON KISSINGER MSW

Social Worker