What is Eileen Leach's NPI number?

Eileen Leach's National Provider Identifier (NPI) is 1972442952, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Eileen Leach's specialty?

Eileen Leach is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).

Where is Eileen Leach located?

Eileen Leach's practice location on file with NPPES is 600 Highland Ave, Madison, WI 53792-0001.

What is Eileen Leach's phone number?

The practice phone number listed in the NPPES registry for Eileen Leach is (608) 263-6400.

Is Eileen Leach's NPI active?

Yes — Eileen Leach's NPI (1972442952) is active in the NPPES registry as of the last update on 2026-06-07.

IndividualActive

Eileen Leach, MD

NPI 1972442952 · Internal Medicine Physician · Madison, WI

Eileen Leach, MD is a Internal Medicine Physician provider in Madison, WI (NPI 1972442952).

Provider details

NPI number: 1972442952
Entity type: Individual
Primary specialty: Internal Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Female
Sole proprietor: No
License: 102429-851 (WI)

Specialties & taxonomies

Internal Medicine PhysicianPrimary207R00000XLicense 102429-851 (WI)
Allopathic & Osteopathic Physicians

Profile Score

Established profile(53/100 index)

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

Registry tenure38% of score
Under 1 yr in 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

600 Highland Ave

Madison, WI 53792-0001

Phone: (608) 263-6400

Street-level locationGet directions

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Mailing address