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

Individual provider Anesthesiology Physician · NPI 1013969591

John Byron Maccarthy, MD is an Anesthesiology in Fullerton, California. Graduated from University of Vermont College of Medicine in 1986, 40 years ago. Practices with Allied Anesthesia Medical Group Inc, a 184-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
40
Trained at
University of Vermont 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

101 E Valencia Mesa Dr
Fullerton, CA 92835-3809
Phone: (714) 871-3280
Fax: (714) 447-6490
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence G67046 (CA)

Record details

NPI number1013969591
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 16, 2006
Last updated in NPPESFebruary 19, 2015
Mailing addressPo Box 1628, Orange, CA 92856-0628

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolUNIVERSITY OF VERMONT COLLEGE OF MEDICINE
Graduated 1986 (40 years in practice)
Group practice Allied Anesthesia Medical Group Inc — 184 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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