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TONY M. OHN M.D.
NPI 1184676850
Emergency Medicine in Merced, CA

Active since May 17, 2006PECOS EnrolledAccepts Medicare Assignment
2352 TUSCANY AVE, MERCED, CA 95340(530) 407-3919(815) 625-2747 Get Directions Write a Review

NPPES record last updated: August 14, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Tony M. Ohn M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

TONY M. OHN M.D. (NPI 1184676850) is an individual emergency medicine provider in Merced, California, licensed in California (C52385) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Sterling, and is a graduate of Other (1984).

NPPES Registry Identity

NPI1184676850
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameTONY M. OHNCredential: M.D.
Location Address2352 TUSCANY AVEMerced, CA 95340-9685
Mailing Address2352 Tuscany AveMerced, CA 95340-9685 · (530) 407-3919 · Fax (815) 625-2747
Phone(530) 407-3919
Fax(815) 625-2747
Sole ProprietorYes
Medical School CMSOtherGraduated 1984
Enumeration DateMay 17, 2006
Last NPPES UpdateAugust 14, 2022
NPPES CertifiedAugust 14, 2022
✔ NPI 1184676850 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Licenses✔ Licensed in CA · C52385✔ Licensed in IL · 036089609
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
2352 TUSCANY AVE, Merced, CA 95340
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Other Names 1

Other Name (5)Htoo Maung Ohn Md

Secondary Practice Location 1

Location 1100 E Le Fevre RdSterling, IL 61081-1278 · Phone (815) 625-0400 · Fax (815) 625-2747

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Tony M. Ohn M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4688779465
PECOS Enrollment IDI20071018000823
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

7

Medicare enrollment records show Tony Ohn reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Erx Plus Professional Corporation
29 mi
Emergency Medicine
5189 HOSPITAL RD
Mariposa, CA 95338
  • Reassigned Medicare billing, California enrollment
  • 28 clinicians in this Medicare group
NPI 1336508407 (865) 777-1300
Concierge Medline
242 mi
Internal Medicine
8745 GLENOAKS BLVD
Sun Valley, CA 91352
  • Reassigned Medicare billing, California enrollment
NPI 1801604285 (747) 466-2087
Pacifica Emergency Medical Associates
243 mi
Emergency Medicine
16237 VENTURA BLVD
Encino, CA 91436
  • Reassigned Medicare billing, California enrollment
  • 58 clinicians in this Medicare group
NPI 1053350975 (310) 379-2134
Cardinal Emergency Providers Professional Corporation
249 mi
Emergency Medicine
1100 BUTTE ST
Redding, CA 96001
  • Reassigned Medicare billing, California enrollment
  • 30 clinicians in this Medicare group
NPI 1356226690 (530) 244-5400
Shasta Emergency Medical Associates Inc
249 mi
Emergency Medicine
1100 BUTTE ST
Redding, CA 96001
  • Reassigned Medicare billing, California enrollment
  • 23 clinicians in this Medicare group
NPI 1356030563 (530) 244-5400
Trinity Emergency Physicians
249 mi
Emergency Medicine
1100 BUTTE ST
Redding, CA 96001
  • Reassigned Medicare billing, California enrollment
  • 63 clinicians in this Medicare group
NPI 1508605635 (888) 726-1690
Erx Hospitalist Group PC
2,010 mi
Hospitalist
9724 KINGSTON PIKE, SUITE 406
Knoxville, TN 37922
  • Reassigned Medicare billing, California enrollment
  • 23 clinicians in this Medicare group
NPI 1699199562 (865) 777-1300

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
288 services279 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
259 services236 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
92 services88 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
61 services61 patients
Emergency department visit with low level of medical decision making 99283
An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.
35 services34 patients
Emergency department visit with straightforward medical decision making 99282
An emergency department visit for a mild to moderate issue is when you seek immediate medical attention for a non-life-threatening condition. This could include minor injuries, moderate pain, or illnesses like the flu. During the visit, healthcare professionals assess your condition, provide treatment, and may recommend follow-up care.
15 services15 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95340 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$90.32 typical visit price
range $58.87 – $176.60
Typical copayment $22.58 (range $14.71 – $44.15)
Most-billed visit code 99203
Established Patient
$103.36 typical visit price
range $19.28 – $144.60
Typical copayment $25.84 (range $4.82 – $36.15)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Tony Ohn's NPI number?

The NPI number for Tony Ohn is 1184676850. It was assigned to this individual provider in the NPPES registry on May 17, 2006. The provider is also known as Htoo Maung Ohn MD.

Where is Tony Ohn located?

Tony Ohn practices at 2352 Tuscany Ave, Merced, CA 95340. The listed phone number is (530) 407-3919.

What is Tony Ohn's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Tony Ohn enrolled in Medicare?

Yes. Tony Ohn is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Tony Ohn's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tony Ohn reassigns Medicare benefits to 7 organizations: Erx Plus Professional Corporation (Mariposa, CA), Concierge Medline (Sun Valley, CA), Pacifica Emergency Medical Associates (Encino, CA), Cardinal Emergency Providers Professional Corporation (Redding, CA), Shasta Emergency Medical Associates Inc (Redding, CA) and 2 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Tony Ohn's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Tony Ohn was last updated on August 14, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.