Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark Jason Roschewski, MD

Hematology (Internal Medicine) Physician in Washington, DC · enumerated 2005.

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

National Provider Identifier

1912991951

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Registry record

Entity type Individual (Type 1)

Name Mark Jason Roschewski

Credential MD

Sex Male

Practice address 6900 Georgia Ave Nw, Walter Reed Army Med Center, Washington, DC, 20307

Phone (202) 782-4950

Enumeration date Sep 6, 2005

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

207RH0000X Hematology (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 5507 (AK) Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Mark Roschewski practice?

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

What is the NPI number for Mark Roschewski?

The National Provider Identifier (NPI) for Mark Roschewski is 1912991951, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.