Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Tsuang, MD

Urology Physician in Cincinnati, OH · enumerated 2006.

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

National Provider Identifier

1922011428

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Tsuang

Credential MD

Sex Male

Practice address 2123 Auburn Ave, Ste 204, Cincinnati, OH, 45219

Phone (513) 421-8181

Fax (513) 421-8188

Enumeration date Aug 14, 2006

Last updated in NPPES Oct 11, 2011

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License 35043144 (OH) 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

What specialty is Mark Tsuang?

Mark Tsuang is registered in NPPES with the primary taxonomy of Urology 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 2011-10-11.