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

John Frederick Macmillan, MD

Individual provider Internal Medicine Physician · NPI 1568449015

John Frederick Macmillan, MD is an Internal Medicine in Sacramento, California. Qualified in 1995, 31 years ago. Practices with Regents of the Univ of Ca, a 1,578-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
31
Licensed in
CA
In the registry since
2005
Specialties on file
3
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

2315 Stockton Blvd Main Hospital University Of California Davis Health Sys
Sacramento, CA 95817-2201
Phone: (918) 734-7508
Fax: (918) 734-4810
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A688400 (CA)
Hospitalist Physician Taxonomy 208M00000X · Licence A688400 (CA)
Hospice and Palliative Medicine (Internal Medicine) Physician Taxonomy 207RH0002X · Licence A68840 (CA)

Record details

NPI number1568449015
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 27, 2005
Last updated in NPPESApril 21, 2014

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesHOSPICE/PALLIATIVE CARE, HOSPITALIST
Medical schoolOTHER
Graduated 1995 (31 years in practice)
Group practice Regents Of The Univ Of Ca — 1578 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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