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

Mr. Thomas Marx DO, MD

Individual provider Internal Medicine Physician · NPI 1346280245

Mr. Thomas Marx DO, MD is a Hospitalist in Sacramento, California. Graduated from Hahnemann University College of Medicine in 1994, 32 years ago. Practices with Dignity Health Medical Foundation, a 1,204-clinician group and accepts Medicare assignment. Licensed in California and Virginia.

Years since qualifying
32
Trained at
Hahnemann University College of Medicine
Licensed in
CA, VA
In the registry since
2006
Specialties on file
2
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

8120 Timberlake Way Ste 107
Sacramento, CA 95823-5413
Phone: (916) 681-6000
Fax: (916) 681-6188
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence A78702 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 0101238253 (VA)

Record details

NPI number1346280245
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 8, 2006
Last updated in NPPESMarch 13, 2020
Certification dateMarch 13, 2020

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Medical schoolHAHNEMANN UNIVERSITY COLLEGE OF MEDICINE
Graduated 1994 (32 years in practice)
Group practice Dignity Health Medical Foundation — 1204 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations7 on file with Medicare

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