Doctor profile · Federal record
Dr. Marissa O'Connor, PA-C
Physician Assistant · Saint James, NY
- NPI 1588317259
- 4 yrs on file
- Female
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
18 Damin Cir
Saint James, NY 117801604
(631) 617-2558
Credentials & registration
- NPI registered
- February 2022 — 4 yrs on file
- Specialty taxonomy
- 363A00000X — NUCC code
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1588317259. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
14
Distinct HCPCS
1
Medicare allowed
$2,441
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99285 |
Emergency department visit with high level of medical decision making | 14 | 14 | $174 |
In context: peer comparison
Among 1 peers in Saint James Physician Assistant, average services per provider: 14. This provider delivers 1.0× the peer median.Frequently asked questions
What is Dr. Marissa O'Connor's medical specialty?
Dr. Marissa O'Connor practices Physician Assistant in Saint James, NY.
Where does Dr. Marissa O'Connor practice?
Dr. Marissa O'Connor practices at 18 Damin Cir, Saint James, NY 117801604. Office phone: 6316172558.
What is Dr. Marissa O'Connor's NPI?
Dr. Marissa O'Connor's National Provider Identifier (NPI) is 1588317259, issued by NPPES.
What procedures does Dr. Marissa O'Connor commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with high level of medical decision making (HCPCS 99285). Source: CMS Medicare Physician & Other Practitioners file.