William Erhardt, MD
NPI 1023354131 · Pediatrics Physician · Southold, NY
William Erhardt, MD is a Pediatrics Physician provider in Southold, NY (NPI 1023354131).
Provider details
- NPI number
- 1023354131
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 179528 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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
Additional practice locations (2)
- 345 E 56th StApt. 15fNew York, NY 10022-3736Phone: (917) 932-4581
- 345 E 56th StApt. 15fNew York, NY 10022-3736Phone: (917) 932-4581
Registry dates
- Enumerated
- 2012-12-17
- Last updated
- 2018-03-17
Frequently asked questions
- What is William Erhardt's NPI number?
- William Erhardt's National Provider Identifier (NPI) is 1023354131, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Erhardt's specialty?
- William Erhardt is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is William Erhardt located?
- William Erhardt's practice location on file with NPPES is 11985 Soundview Ave, Southold, NY 11971-2748.
- What is William Erhardt's phone number?
- The practice phone number listed in the NPPES registry for William Erhardt is (917) 932-4581.
- Is William Erhardt's NPI active?
- Yes — William Erhardt's NPI (1023354131) is active in the NPPES registry as of the last update on 2018-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.