NPI Portal NPI Lookup & Verification

Mark J Cotter, PAC

Mark J Cotter is a Physician Assistant provider (Physician Assistant) practicing in Salisbury, MD, registered in the NPPES registry with NPI 1518946524 since 2006. Practices at Peninsula Pathology Associates, PA (listed at the same practice address in NPPES).

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NPI 1518946524
Entity type Individual (Type 1)
Name Mark J Cotter
Credential PAC
Sex Male
Practice address 100 EAST CARROLL STREET, Salisbury, MD, 21801
Phone 4105437100
Fax 4105466350
Enumeration date 2006-01-10
Last updated in NPPES 2007-07-08

Taxonomy & licenses

Taxonomy code Specialty Primary License State
363A00000X Physician Assistant Primary C0001015 MD
Copy-ready billing details
Provider: Mark Cotter, PAC
NPI: 1518946524
Taxonomy: 363A00000X (Physician Assistant)
Address: 100 EAST CARROLL STREET, Salisbury, MD, 21801

Other providers at this practice address

NPI Name Type Specialty Location
1255310272 Jeffrey Greenwood Individual Emergency Medicine Physician Salisbury, MD
1245219260 Glenn Hornstein Individual Emergency Medicine Physician Silisbury, MD
1033198031 James Little Individual Emergency Medicine Physician Salisbury, MD
1730168733 M Cristina Lazostefanini Individual Emergency Medicine Physician Salisbury, MD
1538148549 Robert Klug Individual Emergency Medicine Physician Salisbury, MD
1861471781 Pamela Zorn Individual Emergency Medicine Physician Salisbury, MD
1154300168 Karen Mull Individual Physician Assistant Salisbury, MD
1316926447 Timothy Lentz Individual Physician Assistant Salisbury, MD

Verify this record

Cross-check NPI 1518946524 against the authoritative CMS record: view Mark J Cotter on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

What specialty is Mark Cotter?
Mark Cotter is registered in NPPES with the primary taxonomy of Physician Assistant. 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.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.