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

Individual provider Psychiatry Physician · NPI 1669587580

Dr. John D. Mesaros, MD is a Psychiatry in Berkeley, California. Graduated from Michigan State University College of Human Medicine in 1992, 34 years ago. Practices with The Guidance Center, a 27-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
34
Trained at
Michigan State University College of Human 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

2006 Dwight Way #101
Berkeley, CA 94704-2633
Phone: (925) 448-2958
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence G131019 (CA)

Record details

NPI number1669587580
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedAugust 20, 2006
Last updated in NPPESMay 3, 2020
Certification dateMay 3, 2020
Mailing address225 Coggins Dr, Apt 252, Pleasant Hill, CA 94523-4402

Medicare enrollment

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

Medicare specialtyPSYCHIATRY
Medical schoolMICHIGAN STATE UNIVERSITY COLLEGE OF HUMAN MEDICINE
Graduated 1992 (34 years in practice)
Group practice The Guidance Center — 27 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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