NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Alexander Maclean, MD, MSC, FRCSC

Neurological Surgery Physician in Pittsburgh, PA · enumerated 2024 · practices at Tri-State Nerolosurgical Associates-Upmc.

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

National Provider Identifier

1699511600

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Mark Alexander Maclean
Credential MD, MSC, FRCSC
Sex Male
Practice address 200 Lothrop St Ste A-402, Pittsburgh, PA, 15213
Enumeration date Jul 8, 2024
Last updated in NPPES Jul 17, 2024

Taxonomy & licenses

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License MD484417 (PA) 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 is the NPI number for Mark Maclean?
The National Provider Identifier (NPI) for Mark Maclean is 1699511600, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mark Maclean practice?
The practice location on file with NPPES is in Pittsburgh, PA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-07-17.