Dr. Stephen Girard Sinclair , DO
Internal Medicine - Gastroenterology β’ Las Vegas, NV
9260 W Sunset Rd Ste 306
Las Vegas, NV 891484903
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. Stephen Sinclair is listed in NPPES under Internal Medicine - Gastroenterology.
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NPI assigned on April 8, 2020; this date does not establish years in practice.
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Published CMS data list 53 Medicare Part D prescriptions, including refills, in 2023.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2023. Published rows only; this is not a quality measure.
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Published Part D records, 2023:
- Lisinopril β 22 prescription fills, including refills.
- Atorvastatin Calcium β 17 prescription fills, including refills.
- Amlodipine Besylate β 14 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2023. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table Β· Guide: How to read Medicare Part D prescriber data
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Medicare Part D prescriptions went from 57 in 2022 to 53 in 2023.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2022β2023.
Practice Location & Contact Primary Location
9260 W Sunset Rd Ste 306
Las Vegas, NV 891484903
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
West Virginia School Of Osteopathic Medicine
2020
What Public CMS Data Show
Internal Medicine - Gastroenterology: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
129 standardized 30-day fills in 2023
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$442 in 2023
The total cost of these prescriptions in 2023, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2023.
Open Payments general payments, program year 2025
All general payments: $1,401.99 across 16 records.
By nature of payment
- Food and Beverage: $1,401.99 across 16 records.
Reporting-company totals (3 largest of 9)
- Boston Scientific Corporation: $308.91 across 5 records.
- ABBVIE INC.: $282.82 across 3 records.
- Madrigal Pharmaceuticals: $174.92 across 2 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
6 years (graduated 2020)
CMS Doctors and Clinicians data list 2020 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2020
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
May accept Medicare assignment
CMS data show this clinician may accept Medicare assignment. Clinicians who do not always accept assignment can decide case by case.
Ask the office before your visit. If a clinician does not accept assignment for a service, they can charge up to 15% more than the Medicare-approved amount, and you may be asked to pay the full amount at the visit.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, βDoes your provider accept Medicare as full payment?β
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Sinclair has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Sinclair as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Las Vegas and Nevada
Billing and prescribing volume is not a quality rating.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Sinclair are from 2023.
58 active clinicians are listed under Internal Medicine - Gastroenterology with a practice address in Las Vegas, NV (121 in Nevada).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Las Vegas
20.7% of these 58 clinicians have the CMS telehealth indicator.
74.1% of these 58 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part D prescriptions
Medicare Part D prescriptions stayed about the same: 57 in 2022 and 53 in 2023.
- 2022: 57
- 2023: 53
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30-day fills
30-day fills increased 13% from 114 in 2022 to 129 in 2023.
- 2022: 114
- 2023: 129
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Part D drug cost
Part D drug cost went from $343 in 2022 to $442 in 2023.
- 2022: $343
- 2023: $442
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $126.22 in 2022 to $1,401.99 in 2025.
- 2022: $126.22
- 2024: $317.09
- 2025: $1,401.99
Sources: CMS Medicare Part D Prescribers (2023), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 β December 31, 2025): 16 records totaling $1,401.99.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Boston Scientific Corporation |
Food and Beverage
In-kind items and services
|
ACCOLADE SR | General | $139.27 |
| Regeneron Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
β | General | $134.99 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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β | General | $126.47 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
SKYRIZI | General | $124.97 |
| Celltrion USA Inc. |
Food and Beverage
In-kind items and services
|
ZYMFENTRA | General | $123.89 |
| Takeda Pharmaceuticals U.S.A., Inc. |
Food and Beverage
In-kind items and services
|
ENTYVIO | General | $120.06 |
| Ferring Pharmaceuticals Inc. |
Food and Beverage
In-kind items and services
|
REBYOTA | General | $118.09 |
| Madrigal Pharmaceuticals |
Food and Beverage
In-kind items and services
|
REZDIFFRA | General | $111.97 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
|
TREMFYA | General | $101.10 |
| Boston Scientific Corporation |
Food and Beverage
In-kind items and services
|
ACCOLADE SR | General | $87.68 |
| Madrigal Pharmaceuticals |
Food and Beverage
In-kind items and services
|
REZDIFFRA | General | $62.95 |
| Boston Scientific Corporation |
Food and Beverage
In-kind items and services
|
ACCOLADE SR | General | $51.65 |
| Ardelyx, Inc. |
Food and Beverage
In-kind items and services
|
IBSRELA | General | $37.21 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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SKYRIZI | General | $31.38 |
| Boston Scientific Corporation |
Food and Beverage
In-kind items and services
|
ACCOLADE SR | General | $17.47 |
| Boston Scientific Corporation |
Food and Beverage
In-kind items and services
|
ACCOLADE SR | General | $12.84 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2023.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Lisinopril | Lisinopril | 22 | 1,533 | $161.77 | β |
| Atorvastatin Calcium | Atorvastatin Calcium | 17 | 1,110 | $246.08 | β |
| Amlodipine Besylate | Amlodipine Besylate | 14 | 1,200 | $33.83 | β |
Source: CMS Part D by Provider and Drug, 2023; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2026-10-22NUCC Taxonomy Code: 207RG0100X
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.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20260423001644
NV
9830514611
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine - Gastroenterology
Doctor of Medicine (M.D.)
Internal Medicine - Gastroenterology
Doctor of Medicine (M.D.)
Internal Medicine - Gastroenterology
Doctor of Medicine (M.D.)
Physician Assistant
PHYSICIANASSISTANT
Internal Medicine - Gastroenterology
Doctor of Medicine (M.D.)
Internal Medicine - Gastroenterology
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Internal Medicine (license number reported to NPPES: NV DO3617)
Registered at 9260 W SUNSET RD STE 306, LAS VEGAS, NV 891484903 (Tel: 7024834483)
Registered at 9260 W SUNSET RD STE 306, LAS VEGAS, NV 891484903 (Tel: 7024834483)
Internal Medicine (license number reported to NPPES: NV DO3617)
NPI status registered as active in NPPES database
Registered at 5300 N MEADOWS DR, GROVE CITY, OH 431232546 (Tel: 6146634550)
Registered at 5300 N MEADOWS DR, GROVE CITY, OH 431232546 (Tel: 6146634550)
Recorded as STEPHEN SINCLAIR, DO
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine - Gastroenterology Specialists in Las Vegas
- Dr. Deb Mukhopadhyay, MD
- Christopher Chang
- Dr. Uday Saraiya, MD
- Dr. John Ryan, MD
- Dr. Gordon Ohning, MD
- Dr. Laura Gitlin, MD
Mailing Address
9260 W Sunset Rd Ste 306
Las Vegas, NV 891484903
Phone: 7024834483