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

Dr. Peter F Keenan III, MD

Individual provider Emergency Medicine Physician · NPI 1699068601

Dr. Peter F Keenan III, MD practises Emergency Medicine in Los Alamitos, California. Graduated from Boston University School of Medicine in 2011, 15 years ago. Practices with Regents of the University Of, a 125-clinician group and accepts Medicare assignment. Licensed in California and Texas.

Years since qualifying
15
Trained at
Boston University School of Medicine
Licensed in
CA, TX
In the registry since
2011
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

3751 Katella Ave
Los Alamitos, CA 90720-3113
Phone: (562) 598-1311
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 140040 (CA)
Emergency Medicine Physician Taxonomy 207P00000X · Licence Q3901 (TX)

Record details

NPI number1699068601
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 24, 2011
Last updated in NPPESMarch 26, 2025
Certification dateMarch 26, 2025

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolBOSTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 2011 (15 years in practice)
Group practice Regents Of The University Of — 125 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients502
Services billed 1,040 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Uci Health-Lakewood Hospital · Lakewood, CA
  • Uci Health-Orange Hospital · Orange, CA

Colleagues at Regents of the University Of

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 125 clinicians in the practice; 12 are shown here.

Other providers in Los Alamitos