What is Mark Overby's NPI number?

Mark Overby's National Provider Identifier (NPI) is 1497545560, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mark Overby's specialty?

Mark Overby is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).

Where is Mark Overby located?

Mark Overby's practice location on file with NPPES is 611 W Park St, Urbana, IL 61801-2501.

What is Mark Overby's phone number?

The practice phone number listed in the NPPES registry for Mark Overby is (217) 383-4229.

Is Mark Overby's NPI active?

Yes — Mark Overby's NPI (1497545560) is active in the NPPES registry as of the last update on 2025-05-10.

IndividualActive

Mark Overby, MD

NPI 1497545560 · Psychiatry Physician · Urbana, IL

Mark Overby, MD is a Psychiatry Physician provider in Urbana, IL (NPI 1497545560).

Provider details

NPI number: 1497545560
Entity type: Individual
Primary specialty: Psychiatry PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: Yes
License: 125085629 (IL)

Specialties & taxonomies

Psychiatry PhysicianPrimary2084P0800XLicense 125085629 (IL)
Allopathic & Osteopathic Physicians

Profile Score

Established profile(55/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
1 yr in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

611 W Park St

Urbana, IL 61801-2501

Phone: (217) 383-4229

Street-level locationGet directions

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Mailing address