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

Leroy Wayne Keiser, MD

Individual provider Hematology (Internal Medicine) Physician · NPI 1417047283

Leroy Wayne Keiser, MD is a Medical Oncology in Santa Rosa, California. Graduated from Stanford University School of Medicine in 1973, 53 years ago. Practices with Providence Medical Foundation, a 1,465-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
53
Trained at
Stanford University School of Medicine
Licensed in
CA
In the registry since
2006
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

3555 Round Barn Cir Ste 100
Santa Rosa, CA 95403-1757
Phone: (707) 528-1050
Fax: (707) 525-3874
Show map & directions

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

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence G28436 (CA)
Hematology (Internal Medicine) Physician Taxonomy 207RH0000X · Licence G28436 (CA)
Medical Oncology Physician Taxonomy 207RX0202X · Licence G28436 (CA)

Record details

NPI number1417047283
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 13, 2006
Last updated in NPPESNovember 3, 2021
Certification dateNovember 3, 2021

Medicare enrollment

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

Medicare specialtyMEDICAL ONCOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolSTANFORD UNIVERSITY SCHOOL OF MEDICINE
Graduated 1973 (53 years in practice)
Group practice Providence Medical Foundation — 1465 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations5 on file with Medicare

Other providers in Santa Rosa