What is Jason Antunez's NPI number?

Jason Antunez's National Provider Identifier (NPI) is 1578852877, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Jason Antunez's specialty?

Jason Antunez is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).

Where is Jason Antunez located?

Jason Antunez's practice location on file with NPPES is 333 Mercy Ave, Merced, CA 95340-8319.

What is Jason Antunez's phone number?

The practice phone number listed in the NPPES registry for Jason Antunez is (209) 564-5000.

Does Jason Antunez accept Medicare?

Jason Antunez is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Jason Antunez's NPI active?

Yes — Jason Antunez's NPI (1578852877) is active in the NPPES registry as of the last update on 2018-04-09.

IndividualActiveAccepts Medicare

Jason Antunez, M.D.

NPI 1578852877 · Emergency Medicine Physician · Merced, CA

Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Jason Antunez, M.D. is a Emergency Medicine Physician provider in Merced, CA (NPI 1578852877).

Provider details

NPI number: 1578852877
Entity type: Individual
Primary specialty: Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: Yes
License: 293366 (NY)

Specialties & taxonomies

Emergency Medicine PhysicianPrimary207P00000XLicense A129413 (CA)
Allopathic & Osteopathic Physicians
Emergency Medicine Physician207P00000XLicense 293366 (NY)
Allopathic & Osteopathic Physicians
Family Medicine Physician207Q00000XLicense 293366 (NY)
Allopathic & Osteopathic Physicians
Student in an Organized Health Care Education/Training Program390200000X
Student, Health Care

Profile Score

Detailed profile(82/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
15 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

333 Mercy Ave

Mercy Medical Center Emergency Department

Merced, CA 95340-8319

Phone: (209) 564-5000

Street-level locationGet directions

More CA providers

Mailing address

1990 N California Blvd Ste 400

Walnut Creek, CA 94596-7249

Enumerated: 2011-04-07
Last updated: 2018-04-09

Frequently asked questions

What is Jason Antunez's NPI number?: Jason Antunez's National Provider Identifier (NPI) is 1578852877, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Jason Antunez's specialty?: Jason Antunez is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
Where is Jason Antunez located?: Jason Antunez's practice location on file with NPPES is 333 Mercy Ave, Merced, CA 95340-8319.
What is Jason Antunez's phone number?: The practice phone number listed in the NPPES registry for Jason Antunez is (209) 564-5000.
Does Jason Antunez accept Medicare?: Jason Antunez is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Jason Antunez's NPI active?: Yes — Jason Antunez's NPI (1578852877) is active in the NPPES registry as of the last update on 2018-04-09.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.