Doctor profile · Federal record
Dr. Peter Carolan, MD
Gastroenterology Physician (CMS: Gastroenterology) · Boston, MA
- NPI 1659407427
- Accepts Medicare
- 22 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
Massachusetts General Hospital, 55 Fruit Street
Boston, MA 02114
(617) 724-6113
Credentials & registration
- NPI registered
- February 2007 — 19 yrs on file
- Profile last updated
- July 8, 2007
- Year of graduation
- 2004 — 22 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Massachusetts #L-221790
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1659407427. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
495
Distinct HCPCS
10
Medicare allowed
$57,473
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 121 | 96 | $104 | |
G0500 |
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito | 121 | 119 | $6 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 84 | 84 | $266 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 37 | 37 | $120 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 21 | 21 | $64 | |
43235 |
Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 20 | 20 | $124 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 19 | 19 | $138 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 17 | 14 | $70 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 15 | 15 | $196 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 14 | 13 | $144 |
In context: peer comparison
Among 78 peers in Boston Gastroenterology Physician, average services per provider: 56. This provider delivers 8.8× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
488
Patients
160
Total drug cost
$254,655
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 127 | 49 | $5,077 |
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 59 | 58 | $977 |
| Pantoprazole Sodium | Generic | 46 | 14 | $950 |
| Famotidine | Generic | 44 | 17 | $1,124 |
| Linzess (Linaclotide) | Brand | 31 | 11 | $47,453 |
| Creon (Lipase/Protease/Amylase) | Brand | 26 | 0 | $79,548 |
| Sucralfate | Generic | 24 | 11 | $2,752 |
| Motegrity (Prucalopride Succinate) | Brand | 23 | 0 | $19,691 |
| Mesalamine | Generic | 21 | 0 | $24,217 |
| Dicyclomine Hcl | Generic | 18 | 0 | $245 |
Hospital affiliations
Frequently asked questions
What is Dr. Peter Carolan's medical specialty?
Dr. Peter Carolan practices Gastroenterology Physician in Boston, MA.
Where does Dr. Peter Carolan practice?
Dr. Peter Carolan practices at Massachusetts General Hospital, Boston, MA 02114. Office phone: 6177246113.
What is Dr. Peter Carolan's NPI?
Dr. Peter Carolan's National Provider Identifier (NPI) is 1659407427, issued by NPPES.
Does Dr. Peter Carolan accept Medicare assignment?
Yes. Dr. Peter Carolan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Peter Carolan commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito (HCPCS G0500); Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385). Source: CMS Medicare Physician & Other Practitioners file.