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

Individual provider Obstetrics & Gynecology Physician · NPI 1740360205

Karen J. Sumner, MD is an Obstetrics/Gynecology in Oakland, California. Graduated from Rutgers New Jersey Medical School in 1995, 31 years ago. Practices with Permanente Medical Group Inc, a 10,941-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
31
Trained at
Rutgers New Jersey Medical School
Licensed in
CA
In the registry since
2006
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

275 W Macarthur Blvd
Oakland, CA 94611-5641
Phone: (510) 752-1000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence C55246 (CA)

Record details

NPI number1740360205
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 17, 2006
Last updated in NPPESDecember 22, 2021
Mailing address275 W Macarthur Blvd, Oakland, CA 94611-5641

Medicare enrollment

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

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolRUTGERS NEW JERSEY MEDICAL SCHOOL
Graduated 1995 (31 years in practice)
Group practice Permanente Medical Group Inc — 10941 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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