What is Don Sielaff's NPI number?

Don Sielaff's National Provider Identifier (NPI) is 1144320839, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Don Sielaff's specialty?

Don Sielaff is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).

Where is Don Sielaff located?

Don Sielaff's practice location on file with NPPES is 145 10th St, Lincoln, IL 62656-1559.

What is Don Sielaff's phone number?

The practice phone number listed in the NPPES registry for Don Sielaff is (217) 732-3182.

Is Don Sielaff's NPI active?

Yes — Don Sielaff's NPI (1144320839) is active in the NPPES registry as of the last update on 2025-01-21.

IndividualActive

Don Sielaff, M.D.

NPI 1144320839 · Obstetrics & Gynecology Physician · Lincoln, IL

Don Sielaff, M.D. is a Obstetrics & Gynecology Physician provider in Lincoln, IL (NPI 1144320839).

Provider details

NPI number: 1144320839
Entity type: Individual
Primary specialty: Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: No
License: 037-073027 (IL)

Specialties & taxonomies

Obstetrics & Gynecology PhysicianPrimary207V00000XLicense 037-073027 (IL)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(90/100 index)

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

Registry tenure38% of score
19 yrs 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

145 10th St

Lincoln, IL 62656-1559

Phone: (217) 732-3182

Street-level locationGet directions

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Mailing address