Doctor profile · Federal record
Dr. Michael Brennan, M.D.
Physical Medicine & Rehabilitation Physician (CMS: Physical Medicine and Rehabilitation) · Fairfield, CT
- NPI 1538117049
- Accepts Medicare
- 41 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
140 Sherman St
Fairfield, CT 068245849
(203) 255-3451
fax (203) 255-7478 - Mailing address
-
140 Sherman St 2Nd Floor
Fairfield, CT 068245849
Credentials & registration
- NPI registered
- May 2006 — 20 yrs on file
- Profile last updated
- July 8, 2007
- Year of graduation
- 1985 — 41 yrs since
- Specialty taxonomy
- 208100000X — NUCC code
- State license (1)
- Connecticut #032201
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1538117049. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
988
Distinct HCPCS
2
Medicare allowed
$64,595
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 864 | 104 | $73 | |
80305 |
Testing for presence of drug, read by direct observation | 124 | 82 | $12 |
In context: peer comparison
Among 1 peers in Fairfield Physical Medicine & Rehabilitation Physician, average services per provider: 494. This provider delivers 2.0× the peer median.Open Payments
Industry payments received
All-time total
$216
Transactions
12
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | 8 | $133.35 | |
| Scilex Pharmaceuticals INC. | 2 | $41.70 | |
| Collegium Pharmaceutical, INC. | 1 | $22.75 | |
| Pfizer INC. | 1 | $18.54 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
4,468
Patients
549
Total drug cost
$893,630
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Oxycodone Hcl | Generic | 1,656 | 148 | $101,934 |
| Oxycontin (Oxycodone Hcl) | Brand | 390 | 34 | $467,101 |
| Morphine Sulfate ER (Morphine Sulfate) | Brand | 321 | 31 | $13,318 |
| Hydromorphone Hcl | Generic | 252 | 25 | $8,409 |
| Morphine Sulfate | Generic | 231 | 28 | $12,169 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 229 | 32 | $9,511 |
| Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) | Brand | 224 | 28 | $11,064 |
| Xtampza ER (Oxycodone Myristate) | Brand | 195 | 18 | $213,036 |
| Gabapentin | Generic | 186 | 33 | $4,560 |
| Diazepam | Generic | 176 | 20 | $1,417 |
Frequently asked questions
What is Dr. Michael Brennan's medical specialty?
Dr. Michael Brennan practices Physical Medicine & Rehabilitation Physician in Fairfield, CT.
Where does Dr. Michael Brennan practice?
Dr. Michael Brennan practices at 140 Sherman St, Fairfield, CT 068245849. Office phone: 2032553451.
What is Dr. Michael Brennan's NPI?
Dr. Michael Brennan's National Provider Identifier (NPI) is 1538117049, issued by NPPES.
Does Dr. Michael Brennan accept Medicare assignment?
Yes. Dr. Michael Brennan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Michael Brennan commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Testing for presence of drug, read by direct observation (HCPCS 80305). Source: CMS Medicare Physician & Other Practitioners file.