1. Home
  2. Directory
  3. Colorado
  4. Longmont
  5. Obstetrics Gynecology
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

STEPHEN K STEWART MD
NPI 1881691582
Obstetrics & Gynecology in Longmont, CO

Active since July 07, 2005
1925 W MOUNTAIN VIEW AVE, LONGMONT, CO 80501(303) 776-1234(720) 494-3107 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Stephen K Stewart Md NPPES

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

STEPHEN K STEWART MD (NPI 1881691582) is an individual obstetrics & gynecology provider in Longmont, Colorado, licensed in Colorado (17798) and active in the NPI registry since July 2005.

NPPES Registry Identity

NPI1881691582
Entity TypeIndividualMale
Primary Taxonomy207V00000X
Provider Legal NameSTEPHEN K STEWARTCredential: MD
Location Address1925 W MOUNTAIN VIEW AVELongmont, CO 80501-3128
Mailing Address1925 W Mountain View AveLongmont, CO 80501-3128 · (303) 776-1234 · Fax (720) 494-3107
Phone(303) 776-1234
Fax(720) 494-3107
Sole ProprietorNo
Enumeration DateJuly 7, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1881691582 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in CO · 17798
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
1925 W MOUNTAIN VIEW AVE, Longmont, CO 80501
Open in Google Maps ↗

Other Identifiers 1

Medicaid01177989CO

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. LYLE M PFEIFER MD
Family Medicine
1925 W MOUNTAIN VIEW AVE
LONGMONT, CO 80501
Boulder County (303) 776-1234
LONGMONT CLINIC PC
General Practice
1925 W MOUNTAIN VIEW AVE
LONGMONT, CO 80501
Boulder County (720) 494-3173
DR. LINDA BACKUP MD
Internal Medicine (Interventional Cardiology)
1925 W MOUNTAIN VIEW AVE
LONGMONT, CO 80501
Boulder County (303) 776-1234
DR. KATHERINE DUEBER M.D.
Pediatrics
1925 W MOUNTAIN VIEW AVE
LONGMONT, CO 80501
Boulder County (303) 776-1234
MS. SHARON R KLOEPFER PA
Physician Assistant
1925 W MOUNTAIN VIEW AVE
LONGMONT, CO 80501
Boulder County (303) 776-1234
ROBERT O STARK NP
Nurse Practitioner
1925 W MOUNTAIN VIEW AVE
LONGMONT, CO 80501
Boulder County (303) 776-1234
DR. ROBERT VINCENT NOUHAN MD
Family Medicine
1925 W MOUNTAIN VIEW AVE
LONGMONT, CO 80501
Boulder County (303) 833-8880
MS. KAREN DELVECCHIO NP
Nurse Practitioner
1925 W MOUNTAIN VIEW AVE
LONGMONT, CO 80501
Boulder County (303) 776-1234

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 Stephen Stewart's NPI number?

The NPI number for Stephen Stewart is 1881691582. It was assigned to this individual provider in the NPPES registry on July 7, 2005.

Where is Stephen Stewart located?

Stephen Stewart practices at 1925 W Mountain View Ave, Longmont, CO 80501. The listed phone number is (303) 776-1234.

What is Stephen Stewart's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

When was this NPI record last updated?

The NPPES record for Stephen Stewart was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 24 days 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.