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

Dr. Catherine Dieffenbach, MD

Individual provider Obstetrics & Gynecology Physician · NPI 1861810673

Dr. Catherine Dieffenbach, MD is an Obstetrics/Gynecology in San Diego, California. Graduated from University of California, San Diego School of Medicine in 2014, 12 years ago. Practices with Igo Medical Group Amc, an 11-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
12
Trained at
University of California, San Diego School of Medicine
Licensed in
CA
In the registry since
2014
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

9339 Genesee Ave Ste 220
San Diego, CA 92121-2196
Phone: (858) 455-7520
Fax: (858) 455-5461
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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 C187220 (CA)

Record details

NPI number1861810673
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 31, 2014
Last updated in NPPESApril 16, 2024
Certification dateApril 16, 2024

Medicare enrollment

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

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolUNIVERSITY OF CALIFORNIA, SAN DIEGO SCHOOL OF MEDICINE
Graduated 2014 (12 years in practice)
Group practice Igo Medical Group Amc — 11 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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