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

Dr. Stephen Bernard Gruber, MD

Individual provider Medical Oncology Physician · NPI 1932280377

Dr. Stephen Bernard Gruber, MD is a Medical Genetics and Genomics in Duarte, California. Graduated from Perelman School of Med at the University of Pennsylvania in 1992, 34 years ago. Practices with City of Hope Medical Foundation, a 959-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
34
Trained at
Perelman School of Med at the University of Pennsylvania
Licensed in
CA
In the registry since
2006
Specialties on file
2
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

1500 Duarte Rd
Duarte, CA 91010-3012
Phone: (626) 256-4673
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 209 Fair Oaks Ave, South Pasadena, CA 91030-1814 — (626) 396-2900

Specialties & licences

Clinical Genetics (M.D.) Physician (primary) Taxonomy 207SG0201X · Licence G89235 (CA)
Medical Oncology Physician Taxonomy 207RX0202X · Licence G89235 (CA)

Record details

NPI number1932280377
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 18, 2006
Last updated in NPPESMarch 29, 2023
Certification dateMarch 29, 2023
Mailing addressPo Box 512185, Los Angeles, CA 90051-0185

Medicare enrollment

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

Medicare specialtyMEDICAL GENETICS AND GENOMICS
Also practisesINTERNAL MEDICINE
Medical schoolPERELMAN SCHOOL OF MED AT THE UNIVERSITY OF PENNSYLVANIA
Graduated 1992 (34 years in practice)
Group practice City Of Hope Medical Foundation — 959 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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