Doctor profile · Federal record
Dr. Joseph Guarnaccia, M.D.
Neurology Physician (CMS: Neurology) · Neurology Physician · Derby, CT
- NPI 1235164427
- Accepts Medicare
- 39 yrs in practice
- Licensed in 2 states
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
350 Seymour Ave # 1C
Derby, CT 064181336
(203) 732-1290
fax (203) 732-1299 - Mailing address
-
137 Cold Spring St
New Haven, CT 065112205
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- March 9, 2022
- Year of graduation
- 1987 — 39 yrs since
- Specialty taxonomy
- 2084N0400X — NUCC code
- State licenses (2)
- Connecticut #031179 · Rhode Island #1045N
- Medicaid
- CT #001311795
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1235164427. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
415
Distinct HCPCS
4
Medicare allowed
$46,269
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 239 | 120 | $127 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 105 | 51 | $97 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 53 | 37 | $88 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 18 | 17 | $58 |
In context: peer comparison
Among 1 peers in this city , average services per provider: 103. This provider delivers 4.0× the peer median.Open Payments
Industry payments received
All-time total
$12,482
Transactions
25
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| E.R. Squibb & Sons, L.L.C. | 8 | $8,681.75 | |
| Celgene Corporation | 15 | $3,761.61 | |
| Genentech USA, Inc. | 1 | $23.40 | |
| Novartis Pharmaceuticals Corporation | 1 | $14.82 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
4,093
Patients
1,028
Total drug cost
$2,031,817
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Dextroamphetamine-Amphetamine (Dextroamphetamine/Amphetamine) | Brand | 524 | 94 | $20,049 |
| Baclofen | Generic | 455 | 106 | $17,527 |
| Gabapentin | Generic | 446 | 105 | $11,769 |
| Pyridostigmine Bromide | Generic | 415 | 150 | $29,720 |
| Prednisone | Generic | 373 | 148 | $1,953 |
| Tizanidine Hcl | Generic | 372 | 96 | $8,794 |
| Dalfampridine Er (Dalfampridine) | Brand | 308 | 55 | $127,438 |
| Hydroxychloroquine Sulfate | Generic | 263 | 61 | $7,849 |
| Kesimpta Pen (Ofatumumab) | Brand | 185 | 26 | $1,762,759 |
| Trazodone Hcl | Generic | 144 | 41 | $1,758 |
Hospital affiliations
Frequently asked questions
What is Dr. Joseph Guarnaccia's medical specialty?
Dr. Joseph Guarnaccia practices Neurology Physician in Derby, CT.
Where does Dr. Joseph Guarnaccia practice?
Dr. Joseph Guarnaccia practices at 350 Seymour Ave # 1C, Derby, CT 064181336. Office phone: 2037321290.
What is Dr. Joseph Guarnaccia's NPI?
Dr. Joseph Guarnaccia's National Provider Identifier (NPI) is 1235164427, issued by NPPES.
Does Dr. Joseph Guarnaccia accept Medicare assignment?
Yes. Dr. Joseph Guarnaccia accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Joseph Guarnaccia commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.