Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark W Dersch, MD

Urology Physician in Ocala, FL · enumerated 2006.

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

National Provider Identifier

1538119151

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Registry record

Entity type Individual (Type 1)

Name Mark W Dersch

Credential MD

Sex Male

Practice address 1901 Se 18th Ave, Bldg 300, Ocala, FL, 34471

Phone (352) 351-1313

Fax (352) 351-1927

Enumeration date May 12, 2006

Last updated in NPPES Dec 22, 2020

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License ME66575 (FL) 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

Is NPI 1538119151 active?

Yes, as of the latest NPPES snapshot, NPI 1538119151 is active (record last updated 2020-12-22).

How do I verify Mark Dersch's NPI record?

Cross-check NPI 1538119151 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-12-22.