Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Usman Siddiqui, M.D.
Hospitalist Physician in Nyack, NY · enumerated 2013.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1356774491
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Registry record
Entity type Individual (Type 1)
Name Usman Siddiqui
Credential M.D.
Sex Male
Practice address 311 N Midland Ave Ste 2, Nyack, NY, 10960
Phone (845) 358-5006
Fax (845) 358-4340
Enumeration date Aug 13, 2013
Last updated in NPPES Mar 4, 2024
Taxonomy & licenses
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 294940-1 (NY) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
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
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Usman Siddiqui?
Usman Siddiqui is registered in NPPES with the primary taxonomy of Hospitalist Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-03-04.