Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John Qa Mattern II, DO

Hematology & Oncology Physician in Newport News, VA · enumerated 2005.

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

National Provider Identifier

1730184425

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Registry record

Entity type Individual (Type 1)

Name John Qa Mattern II

Credential DO

Sex Male

Practice address 1051 Loftis Blvd, Suite 100, Newport News, VA, 23606

Phone (757) 873-9400

Fax (757) 873-9420

Enumeration date Jun 17, 2005

Last updated in NPPES Jan 17, 2019

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 0102024256 (VA) 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

Other identifiers

Identifier	Type	State	Issuer
110054750	Other	VA	RAILROAD MEDICARE
005808855	Medicaid	VA	-
55097	Other	VA	OPTIMA

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

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 John Mattern?

John Mattern is registered in NPPES with the primary taxonomy of Hematology & Oncology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-01-17.