MR. RYAN ROBERT MCWILLIAMS (MD) – Gastroenterology Physician, NPI 1326214727
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
369 GASTROENTEROLOGY in CO
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Provider Addresses for MR. RYAN ROBERT MCWILLIAMS (MD)
UNIVERSITY OF COLORADO SCHOOL OF MEDICINE
4200 EAST 9TH AVE.
DENVER, CO 802620001
Phone: (303) 315-7424
Type: Mailing
16th Street, Greeley, Weld County, Colorado, 800631, United States
STE A
GREELEY, CO 80631
Phone: (970) 378-4475
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 32 Open Payments records for all available years, with a total value of $665.
Total Amount is formed as General ($665) + Research ($0) + Ownership ($0) = $665.
Last reported payment date: 2024-11-20 • Largest payer in this snapshot: ABBVIE INC. ($328).
Total Amount
$665
General + Research + Ownership
Payments
32
Total payment records
General Amount
$665
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-20
Latest reported date
Top Companies
Largest payers in this snapshot
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: 2014-06-27
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 |
|---|---|---|---|---|
| I20140627000922 | I | Gastroenterology | CO | 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 |
|---|---|---|---|---|
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 74 | 74 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 50 | 46 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 39 | 38 | $0 |
| 45380 | Biopsy of large bowel using a flexible endoscope | 38 | 38 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 35 | 33 | $0 |
Insurance plans in this area (ZIP 80262)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine, Gastroenterology | CO | |
| Gastroenterology, Internal Medicine | CO | |
| G A S T R O E N T E R O L O G Y | CO | |
| Certified Registered Nurse Anesthetist (Crna) | TX | |
| Physician Assistant | IL | |
| Certified Registered Nurse Anesthetist (Crna) | CO | |
| Certified Registered Nurse Anesthetist (Crna) | CO | |
| Certified Registered Nurse Anesthetist (Crna) | TX | |
| - | CO | |
| Certified Registered Nurse Anesthetist (Crna) | NC |
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