Doctor profile · Federal record
Dr. John Carroll
Gastroenterology Physician (CMS: Gastroenterology) · Washington, DC
- NPI 1770581837
- Accepts Medicare
- MIPS 79.1 / 100 · 2023
- 33 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
3800 Reservoir RD Nw
Washington, DC 200072113
(202) 444-6649 - Mailing address
-
Po Box 418283
Boston, MA 022418283
Credentials & registration
- NPI registered
- July 2005 — 21 yrs on file
- Profile last updated
- February 27, 2012
- Year of graduation
- 1993 — 33 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- District of Columbia #32080
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1770581837. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
912
Distinct HCPCS
10
Medicare allowed
$131,370
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 117 | 108 | $106 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 111 | 111 | $128 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 103 | 103 | $181 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 97 | 86 | $146 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 91 | 87 | $104 | |
99202 |
New patient office or other outpatient visit, 15-29 minutes | 61 | 61 | $82 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 47 | 32 | $88 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 39 | 38 | $145 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 38 | 38 | $206 | |
43235 |
Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 36 | 36 | $102 |
In context: peer comparison
Among 24 peers in Washington Gastroenterology Physician, average services per provider: 72. This provider delivers 13× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
456
Patients
106
Total drug cost
$33,691
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 210 | 63 | $4,706 |
| Omeprazole | Generic | 82 | 29 | $1,825 |
| Esomeprazole Magnesium | Generic | 39 | 0 | $2,048 |
| Famotidine | Generic | 27 | 0 | $549 |
| Dexlansoprazole Dr (Dexlansoprazole) | Brand | 22 | 0 | $5,953 |
| Dicyclomine Hcl | Generic | 17 | 0 | $440 |
| Lansoprazole | Generic | 17 | 0 | $625 |
| Linzess (Linaclotide) | Brand | 17 | 0 | $17,245 |
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 14 | 14 | $218 |
| Metoclopramide Hcl | Generic | 11 | 0 | $82 |
Hospital affiliations
Frequently asked questions
What is Dr. John Carroll's medical specialty?
Dr. John Carroll practices Gastroenterology Physician in Washington, DC.
Where does Dr. John Carroll practice?
Dr. John Carroll practices at 3800 Reservoir RD Nw, Washington, DC 200072113. Office phone: 2024446649.
What is Dr. John Carroll's NPI?
Dr. John Carroll's National Provider Identifier (NPI) is 1770581837, issued by NPPES.
Does Dr. John Carroll accept Medicare assignment?
Yes. Dr. John Carroll accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Carroll commonly perform?
Top Medicare-reported procedures in 2023: Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239); New patient office or other outpatient visit (HCPCS 99203); Biopsy of large bowel using a flexible endoscope (HCPCS 45380). Source: CMS Medicare Physician & Other Practitioners file.