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

Dr. Mario Fernando San Bartolome Jr., MD

Individual provider Adolescent Medicine (Family Medicine) Physician · NPI 1154420024

Dr. Mario Fernando San Bartolome Jr., MD is an Addiction Medicine in Westminster, California. Graduated from University of California, Irvine, California College of Medicine in 2003, 23 years ago. Practices with Kcs, Inc, a 16-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
23
Trained at
University of California, Irvine, California College of Medicine
Licensed in
CA
In the registry since
2006
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

5405 Garden Grove Blvd Ste 102
Westminster, CA 92683-1887
Phone: (714) 598-3707
Fax: (714) 422-0260
Show map & directions

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

Specialties & licences

Addiction Medicine (Preventive Medicine) Physician (primary) Taxonomy 2083A0300X · Licence A89818 (CA)
Adolescent Medicine (Family Medicine) Physician Taxonomy 207QA0000X · Licence A89818 (CA)
Adult Medicine Physician Taxonomy 207QA0505X · Licence A89818 (CA)
Specialist Taxonomy 174400000X · Licence A89818 (CA)

Record details

NPI number1154420024
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 21, 2006
Last updated in NPPESAugust 8, 2019

Medicare enrollment

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

Medicare specialtyADDICTION MEDICINE
Also practisesPREVENTIVE MEDICINE
Medical schoolUNIVERSITY OF CALIFORNIA, IRVINE, CALIFORNIA COLLEGE OF MEDICINE
Graduated 2003 (23 years in practice)
Group practice Kcs, Inc. — 16 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount