William Papanickolas, MD
NPI 1811920937 · Anesthesiology Physician · Modesto, CA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Papanickolas, MD is a Anesthesiology Physician provider in Modesto, CA (NPI 1811920937).
Provider details
- NPI number
- 1811920937
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G77663 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
- 2006-07-09
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Papanickolas's NPI number?
- William Papanickolas's National Provider Identifier (NPI) is 1811920937, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Papanickolas's specialty?
- William Papanickolas is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is William Papanickolas located?
- William Papanickolas's practice location on file with NPPES is 1441 Florida Ave, Modesto, CA 95350-4405.
- What is William Papanickolas's phone number?
- The practice phone number listed in the NPPES registry for William Papanickolas is (209) 578-1211.
- Does William Papanickolas accept Medicare?
- William Papanickolas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Papanickolas's NPI active?
- Yes — William Papanickolas's NPI (1811920937) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.