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

Geoffrey A Geiger, MD

Individual provider Radiation Oncology Physician · NPI 1285836619

Geoffrey A Geiger, MD is a Hematology/Oncology in Covina, California. Graduated from Pennsylvania State University College of Medicine in 2007, 19 years ago. Practices with The Oncology Institute Ca, a Professional Corporation, a 114-clinician group and accepts Medicare assignment. Licensed in California, Florida and Pennsylvania.

Years since qualifying
19
Trained at
Pennsylvania State University College of Medicine
Licensed in
CA, FL, PA
In the registry since
2007
Specialties on file
3
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

554 E San Bernardino Rd Ste 105
Covina, CA 91723-1748
Phone: (626) 331-6866
Fax: (626) 331-6773
Show map & directions

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

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence G193306 (CA)
Radiation Oncology Physician Taxonomy 2085R0001X · Licence MD439170 (PA)
Radiation Oncology Physician Taxonomy 2085R0001X · Licence ME137894 (FL)

Record details

NPI number1285836619
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 5, 2007
Last updated in NPPESApril 29, 2024
Certification dateApril 29, 2024
Mailing address18000 Studebaker Rd Ste 800, Cerritos, CA 90703-2671

Medicare enrollment

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

Medicare specialtyHEMATOLOGY/ONCOLOGY
Medical schoolPENNSYLVANIA STATE UNIVERSITY COLLEGE OF MEDICINE
Graduated 2007 (19 years in practice)
Group practice The Oncology Institute Ca, A Professional Corporation — 114 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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