Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Wellisch, M.D.

Sports Medicine (Orthopaedic Surgery) Physician in Encino, CA · enumerated 2005.

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

National Provider Identifier

1982685996

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Wellisch

Credential M.D.

Sex Male

Practice address 16311 Ventura Blvd, Suite 800, Encino, CA, 91436

Phone (818) 788-7343

Fax (818) 788-9453

Enumeration date Nov 7, 2005

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License A23373 (CA) Secondary

207XX0005X Sports Medicine (Orthopaedic Surgery) Physician Allopathic & Osteopathic Physicians · License A23373 (CA) Primary

2080S0010X Pediatric Sports Medicine Physician Allopathic & Osteopathic Physicians · License A23373 (CA) 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
00A233730	Medicaid	CA	-

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

What is the NPI number for Mark Wellisch?

The National Provider Identifier (NPI) for Mark Wellisch is 1982685996, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mark Wellisch practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.