Doctor profile · Federal record
Dr. Christopher Brennan, M.D.
Internal Medicine Physician (CMS: Hospitalist) · Internal Medicine Physician · Internal Medicine Physician · West Islip, NY
- NPI 1174771323
- Accepts Medicare
- 19 yrs in practice
- Licensed in 3 states
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1000 Montauk Highway, Hospitalist Department 3Rd Floor
West Islip, NY 11795
(631) 376-3610
Credentials & registration
- NPI registered
- August 2008 — 18 yrs on file
- Profile last updated
- May 19, 2025
- Year of graduation
- 2007 — 19 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State licenses (3)
- New York #277549 · Rhode Island #MD13459 · Massachusetts #246004
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1174771323. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
581
Distinct HCPCS
2
Medicare allowed
$58,840
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 424 | 181 | $90 | |
99239 |
Hospital discharge day management, more than 30 minutes | 157 | 151 | $131 |
In context: peer comparison
Among 5 peers in West Islip Internal Medicine Physician, average services per provider: 160. This provider delivers 3.6× the peer median.Open Payments
Industry payments received
All-time total
$308
Transactions
10
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 5 | $137.02 | |
| Kestra Medical Technology Services, INC. | 2 | $92.03 | |
| Janssen Pharmaceuticals, INC | 2 | $55.20 | |
| E.R. Squibb & Sons, L.L.C. | 1 | $23.85 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
91
Patients
83
Total drug cost
$1,208
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 20 | 18 | $144 |
| Prednisone | Generic | 17 | 13 | $31 |
| Furosemide | Generic | 14 | 13 | $57 |
| Metoprolol Succinate | Generic | 14 | 13 | $96 |
| Cefpodoxime Proxetil | Generic | 13 | 13 | $765 |
| Pantoprazole Sodium | Generic | 13 | 13 | $114 |
Hospital affiliations
Frequently asked questions
What is Dr. Christopher Brennan's medical specialty?
Dr. Christopher Brennan practices Internal Medicine Physician in West Islip, NY.
Where does Dr. Christopher Brennan practice?
Dr. Christopher Brennan practices at 1000 Montauk Highway, West Islip, NY 11795. Office phone: 6313763610.
What is Dr. Christopher Brennan's NPI?
Dr. Christopher Brennan's National Provider Identifier (NPI) is 1174771323, issued by NPPES.
Does Dr. Christopher Brennan accept Medicare assignment?
Yes. Dr. Christopher Brennan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Christopher Brennan commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Hospital discharge day management (HCPCS 99239). Source: CMS Medicare Physician & Other Practitioners file.