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

John Thomas Halloran, DO

Individual provider Internal Medicine Physician · NPI 1851888697

John Thomas Halloran, DO is an Internal Medicine in Sacramento, California. Qualified in 2018, 8 years ago. Practices with Community Medical Centers, Inc, a 48-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
8
Licensed in
CA
In the registry since
2018
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.

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Practice location Address checks out

3000 Q St Fl 3
Sacramento, CA 95816-7058
Phone: (916) 733-3400
Fax: (916) 733-5384
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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 20A19224 (CA)

Record details

NPI number1851888697
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedApril 17, 2018
Last updated in NPPESJanuary 18, 2022
Certification dateJanuary 18, 2022

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice Community Medical Centers, Inc. — 48 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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