William Klein, M.D.
NPI 1811969090 · Specialist · Orangeburg, NY
Enrolled with Medicare as Order and Referring Only - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Klein, M.D. is a Specialist provider in Orangeburg, NY (NPI 1811969090).
Provider details
- NPI number
- 1811969090
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 090345 (NY)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
- 2006-02-02
- Last updated
- 2008-05-21
Frequently asked questions
- What is William Klein's NPI number?
- William Klein's National Provider Identifier (NPI) is 1811969090, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Klein's specialty?
- William Klein is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is William Klein located?
- William Klein's practice location on file with NPPES is 60 Dutch Hill Rd, Orangeburg, NY 10962-1723.
- What is William Klein's phone number?
- The practice phone number listed in the NPPES registry for William Klein is (845) 359-4770.
- Does William Klein accept Medicare?
- William Klein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Klein's NPI active?
- Yes — William Klein's NPI (1811969090) is active in the NPPES registry as of the last update on 2008-05-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.