William Cherniak, MD, MPH
NPI 1649635095 · Emergency Medicine Physician · Newport Beach, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Cherniak, MD, MPH is a Emergency Medicine Physician provider in Newport Beach, CA (NPI 1649635095).
Provider details
- NPI number
- 1649635095
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, MPH
- Sex
- Male
- Sole proprietor
- Yes
- License
- D80655 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Ambulatory Health Care Facilities
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 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
Mailing address
Registry dates
- Enumerated
- 2015-12-29
- Last updated
- 2024-07-09
- Certified
- 2024-07-09
Frequently asked questions
- What is William Cherniak's NPI number?
- William Cherniak's National Provider Identifier (NPI) is 1649635095, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Cherniak's specialty?
- William Cherniak is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Cherniak located?
- William Cherniak's practice location on file with NPPES is 20311 Sw Acacia St Ste 140, Newport Beach, CA 92660-1733.
- What is William Cherniak's phone number?
- The practice phone number listed in the NPPES registry for William Cherniak is (831) 777-4283.
- Does William Cherniak accept Medicare?
- William Cherniak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Cherniak's NPI active?
- Yes — William Cherniak's NPI (1649635095) is active in the NPPES registry as of the last update on 2024-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.