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

Individual provider Internal Medicine Physician · NPI 1487668422

Dr. Diana Lynn Sylvestre, MD is an Internal Medicine in Oakland, California. Graduated from Harvard Medical School in 1988, 38 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in California.

Years since qualifying
38
Trained at
Harvard Medical School
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

520 27th St
Oakland, CA 94612-1706
Phone: (510) 834-5442
Fax: (510) 834-0916
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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 G81856 (CA)
Addiction Medicine (Psychiatry & Neurology) Physician Taxonomy 2084A0401X · Licence G81856 (CA)

Record details

NPI number1487668422
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 27, 2006
Last updated in NPPESSeptember 13, 2013

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesADDICTION MEDICINE
Medical schoolHARVARD MEDICAL SCHOOL
Graduated 1988 (38 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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