1. Home
  2. Directory
  3. California
  4. San Francisco
  5. Internal Medicine
  6. NPI Profile

DR. NATHAN M BASS MD
NPI 1689638959
Internal Medicine in San Francisco, CA

Active since April 13, 2006
350 PARNASSUS AVE, #410, SAN FRANCISCO, CA 94143(415) 353-2318(415) 353-2407 Get Directions Write a Review

NPPES record last updated: July 23, 2008. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Nathan M Bass Md NPPES

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

DR. NATHAN M BASS MD (NPI 1689638959) is an individual internal medicine provider in San Francisco, California, licensed in California (A39874) and active in the NPI registry since April 2006.

NPPES Registry Identity

NPI1689638959
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. NATHAN M BASSCredential: MD
Location Address350 PARNASSUS AVE, #410San Francisco, CA 94143-0001
Mailing Address1635 Divisadero St, Ste 625, Box 1821San Francisco, CA 94143-0001 · (415) 353-2318
Phone(415) 353-2318
Fax(415) 353-2407
Sole ProprietorNo
Enumeration DateApril 13, 2006
Last NPPES UpdateJuly 23, 2008
✔ NPI 1689638959 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A39874
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedInternal Medicine · GastroenterologyTaxonomy 207RG0100X · License A39874 (CA)
350 PARNASSUS AVE, San Francisco, CA 94143
Open in Google Maps ↗

Other Identifiers 3

Medicare UPINA28987CA
Medicaid00A398740CA
Medicare PIN00A398740CA

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.

ELLEN LOUISE SIMPSON
Genetic Counselor, MS
350 PARNASSUS AVE, PRENATAL DIAGNOSIS CENTER UCSF SUITE 810
SAN FRANCISCO, CA 94143
San Francisco County (415) 476-4080
DR. FRANCIS YUNG-KANG YAO MD
Internal Medicine (Gastroenterology)
350 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-2318
DR. WILLIAM GROSSMAN MD
Internal Medicine
350 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 476-4144
DR. RITA F. REDBERG MD
Internal Medicine
350 PARNASSUS AVE, #300
SAN FRANCISCO, CA 94143
San Francisco County (415) 476-2873
DR. HUBERT CHEN M.D.
Internal Medicine (Pulmonary Disease)
350 PARNASSUS AVE, SUITE 609, BOX 0924
SAN FRANCISCO, CA 94143
San Francisco County (415) 502-6765
MS. HAZEL BROWN PERRY
Genetic Counselor, MS
350 PARNASSUS AVE, SUITE 810
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-2004
CLAUDIA RENEE PRAGLIN NP
Nurse Practitioner (Adult Health)
350 PARNASSUS AVE, SUITE 607
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-7774
DR. SAMUEL M. SOBOL MD
Internal Medicine
350 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-2873

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 Nathan Bass's NPI number?

The NPI number for Nathan Bass is 1689638959. It was assigned to this individual provider in the NPPES registry on April 13, 2006.

Where is Nathan Bass located?

Nathan Bass practices at 350 Parnassus Ave #410, San Francisco, CA 94143. The listed phone number is (415) 353-2318.

What is Nathan Bass's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for Nathan Bass was last updated on July 23, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years 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.