Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
William Paul Klein, M.D.
Specialist in Orangeburg, NY · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1811969090
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Registry record
Entity type Individual (Type 1)
Name William Paul Klein
Credential M.D.
Sex Male
Practice address 60 Dutch Hill Rd, Suite 18, Orangeburg, NY, 10962
Phone (845) 359-4770
Fax (845) 359-0017
Enumeration date Feb 2, 2006
Last updated in NPPES May 21, 2008
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 00142732 | Medicaid | NY | - |
| 0221011 | Other | - | CIGNA |
| 000000021938 | Other | - | GHI HMO |
| 1046060 | Other | - | UNITED HEALTHCARE |
| 11464 | Other | - | HUDSON HEALTHPLAN |
| 121938 | Other | - | WELLCARE |
| 504981 | Other | - | EMPIRE BLUECROSS BLUESHIELD |
| 070009582 | Other | - | RAILROAD MEDICARE |
| 2200229 | Other | - | GHI PPO |
| 4222489 | Other | - | AETNA |
| 0D2710 | Other | - | HEALTHNET ACS |
| RS138 | Other | - | OXFORD HEALTHPLANS |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What is the NPI number for William Klein?
The National Provider Identifier (NPI) for William Klein is 1811969090, a Type 1 (individual) record in the CMS NPPES registry.
Where does William Klein practice?
The practice location on file with NPPES is in Orangeburg, NY. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Ingrid Olhoffer MOHS-Micrographic Surgery Physician · Orangeburg, NY NPI 1487626651 Joshua Fogelman Specialist · Orangeburg, NY NPI 1295707461 Robert Dorman Specialist · Orangeburg, NY NPI 1629040803 Dermatology Center of Rockland, P.C. Specialist · Orangeburg, NY NPI 1083681456 Amy Goldstein Specialist · Orangeburg, NY NPI 1285662908 Paul Trinkoff Chiropractor · Orangeburg, NY NPI 1437265618 Elizabeth Knobler Dermatology Physician · Orangeburg, NY NPI 1558461871 Raymond Lagstein General Practice Dentistry · Orangeburg, NY NPI 1154494292
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-05-21.