Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Otto J Thomas, MD

Individual provider Anesthesiology Physician · NPI 1073804118

Otto J Thomas, MD practises Anesthesiology in Marysville, California. Graduated from University of Rochester School of Medicine and Dentistry in 2011, 15 years ago. Practices with Anesthesia Service Medical Group, a 237-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
15
Trained at
University of Rochester School of Medicine and Dentistry
Licensed in
CA
In the registry since
2011
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

726 4th St
Marysville, CA 95901-5656 Not confirmed with CMS for 10 years — call before visiting
Phone: (530) 749-4300
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence A123150 (CA)

Record details

NPI number1073804118
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 25, 2011
Last updated in NPPESSeptember 15, 2016

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolUNIVERSITY OF ROCHESTER SCHOOL OF MEDICINE AND DENTISTRY
Graduated 2011 (15 years in practice)
Group practice Anesthesia Service Medical Group — 237 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 patients110
Services billed 132 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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 Anesthesia Service Medical Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 237 clinicians in the practice; 12 are shown here.

Other providers in Marysville