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

Dr. Bret A. Witter, MD

Individual provider Cardiovascular Disease Physician · NPI 1396783387

Dr. Bret A. Witter, MD is a Cardiovascular Disease (Cardiology) in Los Alamitos, California. Graduated from Baylor College of Medicine in 1987, 39 years ago. Practices with Los Alamitos Internal Medical Group Inc, an 8-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
39
Trained at
Baylor College 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

5300 Katella Ave
Los Alamitos, CA 90720-2808
Phone: (562) 430-7533
Fax: (562) 430-8055
Show map & directions

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

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence A45250 (CA)

Record details

NPI number1396783387
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 3, 2006
Last updated in NPPESOctober 11, 2018
Mailing address5300 Katella Ave, Los Alamitos, CA 90720-2808

Medicare enrollment

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

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolBAYLOR COLLEGE OF MEDICINE
Graduated 1987 (39 years in practice)
Group practice Los Alamitos Internal Medical Group Inc — 8 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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