Doctor profile · Federal record
Dr. Brian Riordan, M.D.
Physical Medicine & Rehabilitation Physician (CMS: Physical Medicine and Rehabilitation) · Danbury, CT
- NPI 1326082751
- Accepts Medicare
- MIPS 89.1 / 100 · 2023
- 24 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
235 Main St
Danbury, CT 068106606
(203) 730-5929
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- October 25, 2010
- Year of graduation
- 2002 — 24 yrs since
- Specialty taxonomy
- 208100000X — NUCC code
- State license (1)
- Connecticut #044109
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1326082751. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
5,133
Distinct HCPCS
10
Medicare allowed
$112,878
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J0585 |
Injection, onabotulinumtoxina, 1 unit | 4,247 | 12 | $6 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 529 | 116 | $84 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 97 | 85 | $138 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 87 | 45 | $96 | |
99239 |
Hospital discharge day management, more than 30 minutes | 78 | 76 | $121 | |
95874 |
Needle measurement of electrical activity in muscle with injection of chemical for paralysis of nerve muscle | 24 | 11 | $82 | |
95886 |
Needle measurement of electrical activity in arm or leg muscles, complete study | 24 | 18 | $107 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 23 | 23 | $178 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 12 | 12 | $121 | |
99238 |
Hospital discharge day management, 30 minutes or less | 12 | 12 | $86 |
In context: peer comparison
Among 1 peers in this city , average services per provider: 513. This provider delivers 10× the peer median.Open Payments
Industry payments received
All-time total
$16
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| PFIZER INC. | 1 | $16.31 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,216
Patients
262
Total drug cost
$31,504
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) | Brand | 207 | 22 | $5,585 |
| Gabapentin | Generic | 162 | 46 | $3,508 |
| Tramadol Hcl | Generic | 120 | 35 | $946 |
| Baclofen | Generic | 105 | 21 | $2,962 |
| Pregabalin | Generic | 97 | 24 | $3,509 |
| Diclofenac Sodium | Generic | 94 | 25 | $4,712 |
| Oxycodone Hcl | Generic | 94 | 27 | $2,345 |
| Methocarbamol | Generic | 70 | 27 | $1,494 |
| Cyclobenzaprine Hcl | Generic | 57 | 18 | $1,030 |
| Morphine Sulfate Er (Morphine Sulfate) | Brand | 50 | 0 | $1,054 |
Hospital affiliations
Frequently asked questions
What is Dr. Brian Riordan's medical specialty?
Dr. Brian Riordan practices Physical Medicine & Rehabilitation Physician in Danbury, CT.
Where does Dr. Brian Riordan practice?
Dr. Brian Riordan practices at 235 Main St, Danbury, CT 068106606. Office phone: 2037305929.
What is Dr. Brian Riordan's NPI?
Dr. Brian Riordan's National Provider Identifier (NPI) is 1326082751, issued by NPPES.
Does Dr. Brian Riordan accept Medicare assignment?
Yes. Dr. Brian Riordan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Brian Riordan commonly perform?
Top Medicare-reported procedures in 2023: Injection, onabotulinumtoxina, 1 unit (HCPCS J0585); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222). Source: CMS Medicare Physician & Other Practitioners file.