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

Dr. Thomas Rittman, MD

Individual provider Internal Medicine Physician · NPI 1235392473

Dr. Thomas Rittman, MD practises Psychiatry in Los Angeles, California. Graduated from Ohio State University College of Medicine in 2006, 20 years ago. Practices with Providence Health and Services Oregon, a 1,426-clinician group and accepts Medicare assignment. Licensed in California and Oregon.

Years since qualifying
20
Trained at
Ohio State University College of Medicine
Licensed in
CA, OR
In the registry since
2008
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

1720 E 120th St
Los Angeles, CA 90059-3052
Phone: (310) 668-5189
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence MD163929 (OR)
Internal Medicine Physician Taxonomy 207R00000X · Licence MD163929 (OR)
Psychiatry Physician Taxonomy 2084P0800X · Licence A104062 (CA)

Record details

NPI number1235392473
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 8, 2008
Last updated in NPPESOctober 14, 2020
Certification dateOctober 14, 2020

Medicare enrollment

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

Medicare specialtyPSYCHIATRY
Medical schoolOHIO STATE UNIVERSITY COLLEGE OF MEDICINE
Graduated 2006 (20 years in practice)
Group practice Providence Health And Services Oregon — 1426 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients34
Services billed 199 a service is one billed item, such as a visit, a test or a procedure
Average patient age47

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Providence Health and Services Oregon

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1426 clinicians in the practice; 12 are shown here.

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