DR. ANTHONY DWAYNE WILLIAMS (M.D.) – Gastroenterology Physician, NPI 1245246354
Gastroenterology Physician
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Profile Insights
NPPES metrics only — not quality of care.
648 GASTROENTEROLOGY in MI
Provider Addresses for DR. ANTHONY DWAYNE WILLIAMS (M.D.)
3304 Cooley Ct
Portage, MI 490247430
Phone: (269) 349-2266
Type: Location
23077, Greenfield Road, Southfield, Oakland County, Michigan, 48075, United States
STE 231
SOUTHFIELD, MI 480753709
Phone: (248) 569-2160
Fax: (248) 569-4875
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 3 Open Payments records for all available years, with a total value of $57.
Total Amount is formed as General ($57) + Research ($0) + Ownership ($0) = $57.
Last reported payment date: 2023-11-13 • Largest payer in this snapshot: Takeda Pharmaceuticals U.S.A., Inc. ($57).
Total Amount
$57
General + Research + Ownership
Payments
3
Total payment records
General Amount
$57
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-11-13
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Takeda Pharmaceuticals U.S.A., Inc. | $57 |
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: 2007-10-02
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 |
|---|---|---|---|---|
| I20071002000261 | I | Gastroenterology | MI | 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 |
|---|---|---|---|---|
| 99212 | Established patient office or other outpatient visit, 10-19 minutes | 48 | 37 | $0 |
| G0121 | Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | 42 | 42 | $0 |
| 99203 | New patient office or other outpatient visit, 30-44 minutes | 29 | 29 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 27 | 26 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 25 | 25 | $0 |
Insurance plans in this area (ZIP 49024)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| GASTROENTEROLOGY | MI | 45385 | Removal of polyps or growths of large bowel using an endoscope | 12 | 12 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| O T O L A R Y N G O L O G Y | MI | |
| - | MI | |
| Nurse Practitioner | MI | |
| Physician Assistant | MI | |
| Clinical Psychologist | MI | |
| Physician Assistant | MI | |
| - | MI | |
| Diagnostic Radiology | MI | |
| Vascular Surgery, General Surgery | MI | |
| Orthopedic Surgery | MI |
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