Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Adel Messeih, MD

Q: What is the NPI number for Adel Messeih?

The National Provider Identifier (NPI) for Adel Messeih is 1861451759, a Type 1 (individual) record in the CMS NPPES registry.

Hematology & Oncology Physician in Williamsport, PA · enumerated 2006.

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

National Provider Identifier

1861451759

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Registry record

Entity type Individual (Type 1)

Name Dr. Adel Messeih

Credential MD

Sex Male

Practice address 1100 Grampian Blvd, Divine Providence Hospital, Williamsport, PA, 17701

Phone (570) 326-8470

Fax (570) 326-8590

Enumeration date Mar 21, 2006

Last updated in NPPES Nov 30, 2007

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License MD024213E (PA) Primary

207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians · License MD024213E (PA) Secondary

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
817378	Other	PA	FIRST PRIORITY HEALTH
50057108	Other	PA	KEYSTNE HLTH PLN CENTRAL
0010319410006	Medicaid	PA	-
1768366	Other	PA	UNITEDHEALTHCARE
E10416	Other	PA	HEALTHAMERICA
4588364	Other	PA	AETNA

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

Where does Adel Messeih practice?

The practice location on file with NPPES is in Williamsport, PA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Adel Messeih?

The National Provider Identifier (NPI) for Adel Messeih is 1861451759, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-11-30.