Doctor profile · Federal record
Dr. Kathleen Corey, MD
Gastroenterology Physician (CMS: Gastroenterology) · Boston, MA
- NPI 1326174038
- Accepts Medicare
- 23 yrs in practice
- Female
- 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 18, 2012
- Year of graduation
- 2003 — 23 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Massachusetts #P-226977
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1326174038. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
285
Distinct HCPCS
9
Medicare allowed
$28,639
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 74 | 64 | $104 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 46 | 20 | $83 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 46 | 23 | $124 | |
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 | 38 | 38 | $6 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 25 | 23 | $148 | |
99443 |
Telephone medical discussion with physician, 21-30 minutes | 16 | 16 | $104 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 16 | 16 | $195 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 12 | 12 | $106 | |
99239 |
Hospital discharge day management, more than 30 minutes | 12 | 12 | $123 |
In context: peer comparison
Among 78 peers in this city , average services per provider: 56. This provider delivers 5.1× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
112
Patients
39
Total drug cost
$73,649
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Ursodiol | Generic | 32 | 11 | $9,865 |
| Gavilyte-G (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 30 | 28 | $456 |
| Omeprazole | Generic | 18 | 0 | $714 |
| Xifaxan (Rifaximin) | Brand | 18 | 0 | $62,289 |
| Spironolactone | Generic | 14 | 0 | $325 |
Hospital affiliations
Frequently asked questions
What is Dr. Kathleen Corey's medical specialty?
Dr. Kathleen Corey practices Gastroenterology Physician in Boston, MA.
Where does Dr. Kathleen Corey practice?
Dr. Kathleen Corey practices at Massachusetts General Hospital, Boston, MA 02114. Office phone: 6177246113.
What is Dr. Kathleen Corey's NPI?
Dr. Kathleen Corey's National Provider Identifier (NPI) is 1326174038, issued by NPPES.
Does Dr. Kathleen Corey accept Medicare assignment?
Yes. Dr. Kathleen Corey accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Kathleen Corey commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233). Source: CMS Medicare Physician & Other Practitioners file.