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

Dr. Samuel John Fesenmeier, DO

Individual provider Psychiatry Physician · NPI 1952860587

Dr. Samuel John Fesenmeier, DO is a Psychiatry in Irvine, California. Graduated from Marian University College of Osteopathic Medicine in 2019, 7 years ago. Practices with Southern Mono Health Care District, a 94-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California and Hawaii.

Years since qualifying
7
Trained at
Marian University College of Osteopathic Medicine
Licensed in
CA, HI
In the registry since
2019
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

1000 Fivepoint
Irvine, CA 92618-2377
Phone: (800) 826-4673
Show map & directions

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

Additional practice locations (1)

  • 390 North Loop Rd, Fort Irwin, CA 92310 — (760) 380-5289

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence 20A24295 (CA)
Psychiatry Physician Taxonomy 2084P0800X · Licence DOS-2139 (HI)

Record details

NPI number1952860587
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMarch 13, 2019
Last updated in NPPESJuly 8, 2026
Certification dateJuly 8, 2026
Mailing addressPo Box 512185, Los Angeles, CA 90051-0185

Medicare enrollment

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

Medicare specialtyPSYCHIATRY
Medical schoolMARIAN UNIVERSITY COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 2019 (7 years in practice)
Group practice Southern Mono Health Care District — 94 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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