Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alexander S. Nicholas, DO

Neuromusculoskeletal Medicine & OMM Physician in Philadelphia, PA · enumerated 2005.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1639171598

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Registry record

Entity type Individual (Type 1)

Name Alexander S. Nicholas

Credential DO

Sex Male

Practice address 4190 City Line Ave, Philadelphia, PA, 19131

Phone (215) 871-6425

Fax (215) 871-6490

Enumeration date Aug 11, 2005

Last updated in NPPES Feb 1, 2016

Taxonomy & licenses

204D00000X Neuromusculoskeletal Medicine & OMM Physician Allopathic & Osteopathic Physicians · License OS003496L (PA) Primary

208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians · License OS003496L (PA) Secondary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
000700018	Medicaid	PA	-

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.

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Frequently asked questions

How do I verify Alexander Nicholas's NPI record?

Cross-check NPI 1639171598 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1639171598 active?

Yes, as of the latest NPPES snapshot, NPI 1639171598 is active (record last updated 2016-02-01).

Other providers at this practice address

Browse all →

John Cavenagh Physician Assistant · Philadelphia, PA NPI 1649271313 Kenneth Veit Family Medicine Physician · Philadelphia, PA NPI 1104827286 Todd Vladyka Family Medicine Physician · Philadelphia, PA NPI 1700887858 Evan Nicholas Neuromusculoskeletal Medicine & OMM Physician · Philadelphia, PA NPI 1457353336 Harry Morris Family Medicine Physician · Philadelphia, PA NPI 1376545236 Margaret Spinozzi Registered Dietitian · Philadelphia, PA NPI 1508148321 Navkiran Kaur Student in an Organized Health Care Education/Training Program · Philadelphia, PA NPI 1760278758

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-02-01.