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

Tony M. Ohn, MD

Individual provider Emergency Medicine Physician · NPI 1184676850

Tony M. Ohn, MD practises Emergency Medicine in Merced, California. Qualified in 1984, 42 years ago. Practices with Trinity Emergency Physicians, a 47-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California and Illinois.

Years since qualifying
42
Licensed in
CA, IL
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

2352 Tuscany Ave
Merced, CA 95340-9685
Phone: (530) 407-3919
Fax: (815) 625-2747
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 100 E Le Fevre Rd, Sterling, IL 61081-1278 — (815) 625-0400

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence C52385 (CA)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 036089609 (IL)

Record details

NPI number1184676850
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 17, 2006
Last updated in NPPESAugust 14, 2022
Certification dateAugust 14, 2022

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1984 (42 years in practice)
Group practice Trinity Emergency Physicians — 47 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 patients602
Services billed 786 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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 Trinity Emergency Physicians

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 47 clinicians in the practice; 12 are shown here.

Other providers in Merced