NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mari B Baker, M.D.

Emergency Medicine Physician in Peoria, IL · enumerated 2006.

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

National Provider Identifier

1962431585

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mari B Baker
Credential M.D.
Sex Female
Practice address 8940 N Wood Sage Rd, Peoria, IL, 61615
Phone (309) 243-3000
Fax (309) 243-3070
Enumeration date Jul 3, 2006
Last updated in NPPES Mar 2, 2026

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 036-114578 (IL) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
CA3486 Other IL MEDICARE RR GROUP
036114578 Medicaid IL -
800810 Other - MEDICARE GROUP NO.

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

Where does Mari Baker practice?
The practice location on file with NPPES is in Peoria, IL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mari Baker?
The National Provider Identifier (NPI) for Mari Baker is 1962431585, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-02.