Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Andrew S Diamond, MD, PHD

Individual provider Internal Medicine Physician · NPI 1154347235

Dr. Andrew S Diamond, MD, PHD is an Internal Medicine in San Francisco, California. Graduated from University of Colorado School of Medicine, Denver in 2003, 23 years ago. Practices with One Medical Group Inc, a 328-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
23
Trained at
University of Colorado School of Medicine, Denver
Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

2 Embarcadero Ctr Lbby Level
San Francisco, CA 94111-3823
Phone: (888) 663-6331
Fax: (415) 252-7176
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A88519 (CA)

Record details

NPI number1154347235
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedJuly 14, 2006
Last updated in NPPESMarch 17, 2025
Certification dateMarch 17, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF COLORADO SCHOOL OF MEDICINE, DENVER
Graduated 2003 (23 years in practice)
Group practice One Medical Group Inc — 328 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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