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

Dr. Stephen Justin Sims, MD

Individual provider Family Medicine Physician · NPI 1568453264

Dr. Stephen Justin Sims, MD is a Family Practice in Mountain View, California. Graduated from State University of New York Downstate Medical Center in 1989, 37 years ago. Practices with Bass Medical Group, a 292-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
37
Trained at
State University of New York Downstate Medical Center
Licensed in
CA
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

525 S Dr Ste 107
Mountain View, CA 94040-4211
Phone: (650) 386-0386
Fax: (650) 386-0468
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence G69269 (CA)

Record details

NPI number1568453264
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 2, 2005
Last updated in NPPESFebruary 27, 2025
Certification dateFebruary 27, 2025

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolSTATE UNIVERSITY OF NEW YORK DOWNSTATE MEDICAL CENTER
Graduated 1989 (37 years in practice)
Group practice Bass Medical Group — 292 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations5 on file with Medicare

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