NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Thomas Voellinger, M.D.

Gastroenterology Physician in Wheeling, WV · enumerated 2007 · practices at Mark T Voellinger MD Inc.

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

National Provider Identifier

1619170693

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Mark Thomas Voellinger
Credential M.D.
Sex Male
Practice address 20 Medical Park Ste 203, Wheeling, WV, 26003
Phone (304) 234-8942
Fax (304) 234-1668
Enumeration date Jun 7, 2007
Last updated in NPPES Feb 26, 2024

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 35123440 (OH) Secondary
207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 23549 (WV) Primary
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
3810017998 Medicaid WV —
P01385965 Other WV MEDICARE RAILROAD
3068657 Medicaid OH —

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 Voellinger practice?
The practice location on file with NPPES is in Wheeling, WV. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mark Voellinger?
The National Provider Identifier (NPI) for Mark Voellinger is 1619170693, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-02-26.