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

Dennis J Buchanan, MD

Individual provider Obstetrics & Gynecology Physician · NPI 1003864737

Dennis J Buchanan, MD is an Obstetrics/Gynecology in Fullerton, California. Graduated from University of Southern California Keck School of Medicine in 1979, 47 years ago. Practices with Providence Medical Foundation, a 1,465-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
47
Trained at
University of Southern California Keck School of Medicine
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

101 Laguna Rd Ste 100
Fullerton, CA 92835-3601
Phone: (714) 992-5350
Fax: (714) 992-8156
Show map & directions

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

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence G42457 (CA)

Record details

NPI number1003864737
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 5, 2006
Last updated in NPPESOctober 15, 2021
Certification dateOctober 15, 2021
Mailing address101 Laguna Rd Ste 100, Fullerton, CA 92835-3601

Medicare enrollment

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

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolUNIVERSITY OF SOUTHERN CALIFORNIA KECK SCHOOL OF MEDICINE
Graduated 1979 (47 years in practice)
Group practice Providence Medical Foundation — 1465 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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