GARY CHEN (M.D.) – Gastroenterology Physician, NPI 1720200132
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
143 GASTROENTEROLOGY in NV
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Provider Addresses for GARY CHEN (M.D.)
West Sunset Road, Paradise, Clark County, Nevada, 89119-4016, United States
SUITE 230
LAS VEGAS, NV 891132215
Phone: (702) 483-4483
Fax: (702) 483-4493
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 190 Open Payments records for all available years, with a total value of $19,335.
Total Amount is formed as General ($19,335) + Research ($0) + Ownership ($0) = $19,335.
Last reported payment date: 2024-12-19 • Largest payer in this snapshot: Olympus America Inc. ($15,851).
Total Amount
$19,335
General + Research + Ownership
Payments
190
Total payment records
General Amount
$19,335
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-19
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Olympus America Inc. | $15,851 |
| ABBVIE INC. | $1,311 |
| Janssen Biotech, Inc. | $326 |
| Ardelyx, Inc. | $320 |
| GENZYME CORPORATION | $274 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2011-02-07
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20110207000174 | I | Gastroenterology | NV | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99439 | Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month | 553 | 55 | $0 |
| 99490 | Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | 309 | 56 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 138 | 117 | $0 |
| 99203 | New patient office or other outpatient visit, 30-44 minutes | 85 | 85 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 84 | 77 | $0 |
Insurance plans in this area (ZIP 89113)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Gastroenterology, Internal Medicine | NV | |
| Internal Medicine | NV | |
| Nurse Practitioner | NV | |
| Internal Medicine | MO | |
| G A S T R O E N T E R O L O G Y | NV | |
| Gastroenterology, Internal Medicine | NY | |
| Gastroenterology, Internal Medicine | NV | |
| Physician Assistant | NV | |
| Nurse Practitioner | NV | |
| Gastroenterology, Internal Medicine | NV |
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