Doctor profile · Federal record
Dr. RIZWAN AHMED, M.D.
Gastroenterology Physician (CMS: GASTROENTEROLOGY) · Gastroenterology Physician · MANASSAS, VA
- NPI 1841469061
- Accepts Medicare
- 23 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 6 locations .
- Primary practice
-
8640 SUDLEY RD STE 201
MANASSAS, VA 201104404
(703) 368-6819
fax (703) 330-2923 - Additional location
-
170 W Shirley Ave Ste 205
Warrenton, VA 201863083
(540) 347-2470 - Additional location
-
24430 Stone Springs Blvd Ste 250
Dulles, VA 201662268
(571) 248-0653 - Additional location
-
500 Martha Jefferson Dr
Charlottesville, VA 229114668
(434) 654-5260
fax (434) 654-5260 - Additional location
-
7915 Lake Manassas Dr Ste 302
Gainesville, VA 201553260
(571) 248-0653 - Additional location
-
1010 Three Springs Blvd Ste 270
Durango, CO 813018296
(970) 764-3800
fax (970) 764-3840 - Mailing address
-
PO BOX 381468
GERMANTOWN, TN 381831468
Show 3 more locations
Credentials & registration
- NPI registered
- February 2008 — 18 yrs on file
- Profile last updated
- February 13, 2026
- Year of graduation
- 2003 — 23 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State licenses (2)
- Virginia #0101256346 · South Carolina #94846
- Medicaid
- VA #1841469061
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1841469061. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
396
Distinct HCPCS
10
Medicare allowed
$56,843
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
45380 |
Biopsy of large bowel using a flexible endoscope | 74 | 74 | $171 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 73 | 73 | $98 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 68 | 60 | $120 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 43 | 43 | $158 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 35 | 35 | $177 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 27 | 27 | $161 | |
G0121 |
Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | 26 | 26 | $177 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 19 | 19 | $244 | |
96365 |
Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | 19 | 11 | $63 | |
43235 |
Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 12 | 12 | $99 |
In context: peer comparison
Among 4 peers in this city , average services per provider: 51. This provider delivers 7.8× the peer median.Open Payments
Industry payments received
All-time total
$642
Transactions
24
Manufacturers
9
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| ABBVIE INC. | 10 | $316.34 | |
| Janssen Biotech, Inc. | 3 | $93.01 | |
| Regeneron Healthcare Solutions, Inc. | 3 | $66.05 | |
| Takeda Pharmaceuticals U.S.A., Inc. | 2 | $44.48 | |
| Celgene Corporation | 2 | $30.43 | |
| Lilly USA, LLC | 1 | $29.99 | |
| Celltrion USA Inc. | 1 | $23.63 | |
| Ethicon US, LLC | 1 | $20.33 | |
| PFIZER INC. | 1 | $17.83 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
251
Patients
66
Total drug cost
$30,434
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 109 | 50 | $1,306 |
| Pantoprazole Sodium | Generic | 50 | 16 | $2,307 |
| Colestipol Hcl | Generic | 16 | 0 | $2,273 |
| Diphenoxylate-Atropine (Diphenoxylate Hcl/Atropine) | Brand | 14 | 0 | $372 |
| Linzess (Linaclotide) | Brand | 14 | 0 | $19,217 |
| Ondansetron Hcl | Generic | 13 | 0 | $334 |
| Colesevelam Hcl | Generic | 12 | 0 | $375 |
| Levsin (Hyoscyamine Sulfate) | Brand | 12 | 0 | $4,178 |
| Lansoprazole | Generic | 11 | 0 | $71 |