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

Dr. Michael John Thornton, MD

Individual provider Internal Medicine Physician · NPI 1003892233

Dr. Michael John Thornton, MD is a Critical Care (Intensivists) in Sacramento, California. Qualified in 2000, 26 years ago. Practices with Permanente Medical Group Inc, a 10,941-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
26
Licensed in
CA
In the registry since
2005
Specialties on file
4
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

4150 V St Ste 3400
Sacramento, CA 95817-1460
Phone: (916) 734-3566
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Critical Care Medicine (Internal Medicine) Physician (primary) Taxonomy 207RC0200X · Licence A81778 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence A81778 (CA)
Pulmonary Disease Physician Taxonomy 207RP1001X · Licence A81778 (CA)
Hospitalist Physician Taxonomy 208M00000X · Licence A81778 (CA)

Record details

NPI number1003892233
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 20, 2005
Last updated in NPPESDecember 9, 2021

Medicare enrollment

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

Medicare specialtyCRITICAL CARE (INTENSIVISTS)
Also practisesPULMONARY DISEASE
Medical schoolOTHER
Graduated 2000 (26 years in practice)
Group practice Permanente Medical Group Inc — 10941 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 on file with Medicare

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