Leslie Gewin, MD
NPI 1255488110 · Nephrology Physician · Saint Louis, MO
Leslie Gewin, MD is a Nephrology Physician provider in Saint Louis, MO (NPI 1255488110).
Provider details
- NPI number
- 1255488110
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 2021049335 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$10,989 across 6 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 915 N Grand BlvdSaint Louis, MO 63106-1621Phone: (314) 652-4100
Registry dates
- Enumerated
- 2007-01-04
- Last updated
- 2026-02-03
- Certified
- 2026-02-03
Frequently asked questions
- What is Leslie Gewin's NPI number?
- Leslie Gewin's National Provider Identifier (NPI) is 1255488110, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leslie Gewin's specialty?
- Leslie Gewin is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Leslie Gewin located?
- Leslie Gewin's practice location on file with NPPES is 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110-1003.
- What is Leslie Gewin's phone number?
- The practice phone number listed in the NPPES registry for Leslie Gewin is (314) 362-7603.
- Is Leslie Gewin's NPI active?
- Yes — Leslie Gewin's NPI (1255488110) is active in the NPPES registry as of the last update on 2026-02-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.