Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alexander Michael Digregorio, D.O.

Internal Medicine Physician in Phoenixville, PA · enumerated 2017.

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

National Provider Identifier

1295273290

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Registry record

Entity type Individual (Type 1)

Name Dr. Alexander Michael Digregorio

Credential D.O.

Sex Male

Practice address 140 Nutt Rd, Phoenixville, PA, 19460

Phone (610) 983-1000

Enumeration date Feb 9, 2017

Last updated in NPPES Jul 17, 2025

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License OS023440 (PA) Primary

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

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Alexander Digregorio?

Alexander Digregorio is registered in NPPES with the primary taxonomy of Internal Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-17.