Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mary Ellen Acree, M.D.

Q: What is the NPI number for Mary Acree?

The National Provider Identifier (NPI) for Mary Acree is 1336378348, a Type 1 (individual) record in the CMS NPPES registry.

Infectious Disease Physician in Evanston, IL · enumerated 2009.

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

National Provider Identifier

1336378348

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Registry record

Entity type Individual (Type 1)

Name Dr. Mary Ellen Acree

Credential M.D.

Sex Female

Practice address 1000 Central St Ste 800, Evanston, IL, 60201

Phone (847) 657-5959

Fax (847) 657-5764

Enumeration date Jul 11, 2009

Last updated in NPPES Apr 7, 2021

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 036.132125 (IL) Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 036.132125 (IL) Secondary

2080P0208X Pediatric Infectious Diseases Physician Allopathic & Osteopathic Physicians · License 036132125 (IL) Secondary

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License 036132125 (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

What is the NPI number for Mary Acree?

The National Provider Identifier (NPI) for Mary Acree is 1336378348, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mary Acree practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-04-07.