Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Angela Mark, MD

Neurology Physician in Evanston, IL · enumerated 2007.

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

National Provider Identifier

1225155955

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Registry record

Entity type Individual (Type 1)

Name Dr. Angela Mark

Credential MD

Sex Female

Practice address 1000 Central St Ste 880, Evanston, IL, 60201

Phone (847) 570-2570

Enumeration date Mar 26, 2007

Last updated in NPPES Feb 18, 2021

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care · License 4301085650 (MI) Secondary

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 036.123226 (IL) 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 1225155955 active?

Yes, as of the latest NPPES snapshot, NPI 1225155955 is active (record last updated 2021-02-18).

How do I verify Angela Mark's NPI record?

Cross-check NPI 1225155955 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 2021-02-18.