Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. STEPHEN GIRARD SINCLAIR III DO
NPI 1558980730
Internal Medicine - Gastroenterology in Las Vegas, NV

Q: What is Stephen Sinclair's NPI number?

The NPI number for Stephen Sinclair is 1558980730. It was assigned to this individual provider in the NPPES registry on April 8, 2020.

Q: What is Stephen Sinclair's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for Stephen Sinclair was last updated on October 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.

Active since April 08, 2020PECOS Enrolled

9260 W SUNSET RD STE 306, LAS VEGAS, NV 89148(702) 483-4483(702) 410-6670 Get Directions Write a Review

NPPES record last updated: October 22, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 9, 2026, Mar 8, 2022, Apr 8, 2020 (3 updates tracked since 2020).

On this page

About Dr. Stephen Girard Sinclair Iii Do NPPES

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

DR. STEPHEN GIRARD SINCLAIR III DO (NPI 1558980730) is an individual gastroenterology provider in Las Vegas, Nevada, licensed in Nevada (DO3617) and active in the NPI registry since April 2020. He is enrolled in Medicare PECOS, is affiliated with Southern Hills Hospital And Medical Center, and is a graduate of West Virginia School Of Osteopathic Medicine (2020).

NPPES Registry Identity

NPI1558980730

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameDR. STEPHEN GIRARD SINCLAIR IIICredential: DO

Location Address9260 W SUNSET RD STE 306Las Vegas, NV 89148-4903

Mailing Address9260 W Sunset Rd Ste 306Las Vegas, NV 89148-4903 · (702) 483-4483 · Fax (702) 410-6670

Phone(702) 483-4483

Fax(702) 410-6670

Sole ProprietorNo

Medical School CMSWest Virginia School Of Osteopathic MedicineGraduated 2020

Enumeration DateApril 8, 2020

Last NPPES UpdateOctober 22, 20263 updates tracked since enumeration

NPPES CertifiedOctober 22, 2026

✔ NPI 1558980730 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in NV · DO3617

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

9260 W SUNSET RD STE 306, Las Vegas, NV 89148

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter Health, Molina Healthcare.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Stephen Girard Sinclair Iii Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID9830514611

PECOS Enrollment IDI20260423001644

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Stephen Sinclair reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Kim Chen PLLC

0.9 mi

Gastroenterology

8530 W. SUNSET RD, SUITE 230
Las Vegas, NV 89113

Reassigned Medicare billing, Nevada enrollment
24 clinicians in this Medicare group

NPI 1881078418 (702) 483-4483

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Southern Hills Hospital And Medical Center

Acute Care Hospitals · Las Vegas, NV

4/5 CMS rating

OwnershipProprietary

CMS Certification Number290047

Location9300 West Sunset RdLas Vegas, NV 89148 · Clark County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 89148 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$131.25 typical visit price

range $57.07 – $173.24

Typical copayment $32.81 (range $14.26 – $43.31)

Most-billed visit code 99204

Established Patient

$100.60 typical visit price

range $18.27 – $140.96

Typical copayment $25.15 (range $4.56 – $35.24)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 6

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

PETER SU MD LLC

Physical Medicine & Rehabilitation (Pain Medicine)