Leah Larson, MD MS
NPI 1629719158 · Obstetrics & Gynecology Physician · Chicago, IL
Enrolled with Medicare as Order and Referring Only - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leah Larson, MD MS is a Obstetrics & Gynecology Physician provider in Chicago, IL (NPI 1629719158).
Provider details
- NPI number
- 1629719158
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD MS
- Sex
- Female
- Sole proprietor
- No
- License
- 125.080262 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Mailing address
Additional practice locations (1)
- 836 W Wellington AveChicago, IL 60657-5147Phone: (773) 296-5420
Registry dates
- Enumerated
- 2022-04-06
- Last updated
- 2022-06-01
- Certified
- 2022-06-01
Frequently asked questions
- What is Leah Larson's NPI number?
- Leah Larson's National Provider Identifier (NPI) is 1629719158, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leah Larson's specialty?
- Leah Larson is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Leah Larson located?
- Leah Larson's practice location on file with NPPES is 820 S Wood St Ste 100, Chicago, IL 60612-4325.
- What is Leah Larson's phone number?
- The practice phone number listed in the NPPES registry for Leah Larson is (312) 996-2933.
- Does Leah Larson accept Medicare?
- Leah Larson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leah Larson's NPI active?
- Yes — Leah Larson's NPI (1629719158) is active in the NPPES registry as of the last update on 2022-06-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.