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DR. LESLIE STUART GEWIN MD
NPI 1255488110
Internal Medicine - Nephrology in Saint Louis, MO

Active since January 04, 2007
1 BARNES JEWISH HOSPITAL PLZ, DIV IM NEPHROLOGY, SAINT LOUIS, MO 63110(314) 362-7603(314) 747-5213 Get Directions Write a Review

NPPES record last updated: February 3, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Feb 3, 2026, Jul 9, 2024, Apr 25, 2024 and 2 more (5 updates tracked since 2022).

About Dr. Leslie Stuart Gewin Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. LESLIE STUART GEWIN MD (NPI 1255488110) is an individual nephrology provider in Saint Louis, Missouri, licensed in Missouri (2021049335) and active in the NPI registry since January 2007. She maintains a secondary practice location in Saint Louis.

NPPES Registry Identity

NPI1255488110
Entity TypeIndividualFemale
Primary Taxonomy207RN0300X
Provider Legal NameDR. LESLIE STUART GEWINCredential: MD
Location Address1 BARNES JEWISH HOSPITAL PLZ, DIV IM NEPHROLOGYSaint Louis, MO 63110-1003
Mailing AddressPo Box 7412011Chicago, IL 60674-2011 · (314) 362-7603 · Fax (314) 747-5213
Phone(314) 362-7603
Fax(314) 747-5213
Sole ProprietorNo
Enumeration DateJanuary 4, 2007
Last NPPES UpdateFebruary 3, 20265 updates tracked since enumeration
NPPES CertifiedFebruary 3, 2026
✔ NPI 1255488110 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
License✔ Licensed in MO · 2021049335
Definition
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
Also ListedInternal MedicineTaxonomy 207R00000X · License 2021049335 (MO)
1 BARNES JEWISH HOSPITAL PLZ, Saint Louis, MO 63110
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Secondary Practice Location 1

Location 1915 N Grand BlvdSaint Louis, MO 63106-1621 · Phone (314) 652-4100

Other Identifiers 1

Medicaid200110104MO

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. MARGARET LEIGHTON MCNAIRY MD
Hospitalist
1 BARNES JEWISH HOSPITAL PLZ, DIV IM HOSPITALIST
SAINT LOUIS, MO 63110
St. Louis City (314) 362-1700
ANNA RABINOV ANNA RABINOV
Obstetrics & Gynecology
1 BARNES JEWISH HOSPITAL PLZ
SAINT LOUIS, MO 63110
St. Louis City (314) 747-3000
MRS. MICHELLE MARIE BLOOM ACNP
Nurse Practitioner (Acute Care)
1 BARNES JEWISH HOSPITAL PLZ, DEPT ANESTHESIOLOGY
SAINT LOUIS, MO 63110
St. Louis City (800) 862-9980
DR. FARIS ADAM BAKEER MD
Hospitalist
1 BARNES JEWISH HOSPITAL PLZ, DIV IM HOSPITALIST
SAINT LOUIS, MO 63110
St. Louis City (314) 362-1700
DR. REHAN RAIS MD
Hospitalist
1 BARNES JEWISH HOSPITAL PLZ, DIV IM HOSPITALIST
SAINT LOUIS, MO 63110
St. Louis City (314) 362-1700
DR. RANDY OLIVIER LAINE MD
Hospitalist
1 BARNES JEWISH HOSPITAL PLZ, DIV IM HOSPITALIST
SAINT LOUIS, MO 63110
St. Louis City (314) 362-1700
DR. BRADLEY SETH KUSHNER MD
Surgery
1 BARNES JEWISH HOSPITAL PLZ, DIV SURG VASCULAR
SAINT LOUIS, MO 63110
St. Louis City (314) 273-7373
MS. KELSEY ELISE FOGUS CRNA
Nurse Anesthetist, Certified Registered
1 BARNES JEWISH HOSPITAL PLZ, DEPT ANESTHESIOLOGY
SAINT LOUIS, MO 63110
St. Louis City (800) 862-9980

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Leslie Gewin's NPI number?

The NPI number for Leslie Gewin is 1255488110. It was assigned to this individual provider in the NPPES registry on January 4, 2007.

Where is Leslie Gewin located?

Leslie Gewin practices at 1 Barnes Jewish Hospital Plz Div Im Nephrology, Saint Louis, MO 63110. The listed phone number is (314) 362-7603.

What is Leslie Gewin's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

When was this NPI record last updated?

The NPPES record for Leslie Gewin was last updated on February 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.