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

Dr. Mary Margaret Oneill, MD

Individual provider Obstetrics & Gynecology Physician · NPI 1215142419

Dr. Mary Margaret Oneill, MD is an Obstetrics/Gynecology in Campbell, California. Graduated from Creighton University School of Medicine in 1985, 41 years ago. Accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
41
Trained at
Creighton University School of Medicine
Licensed in
CA
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

200 W Campbell Ave
Campbell, CA 95008-1030
Phone: (408) 583-0522
Fax: (408) 583-0527
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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 G 69694 (CA)
Gynecology Physician Taxonomy 207VG0400X · Licence G69694 (CA)
Obstetrics Physician Taxonomy 207VX0000X · Licence G69694 (CA)

Record details

NPI number1215142419
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 11, 2007
Last updated in NPPESMarch 17, 2020
Certification dateMarch 17, 2020

Medicare enrollment

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

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolCREIGHTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 1985 (41 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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