Doctor profile · Federal record
Dr. Alexander O'Brien, PMHNP
Psychiatric/Mental Health Nurse Practitioner · Chestnut Hill, MA
- NPI 1598420770
- 5 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
300 South St
Chestnut Hill, MA 024673694
(617) 469-0300
Credentials & registration
- NPI registered
- November 2021 — 5 yrs on file
- Profile last updated
- March 13, 2023
- Specialty taxonomy
- 363LP0808X — NUCC code
- State license (1)
- Massachusetts #234518
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1598420770. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
255
Distinct HCPCS
4
Medicare allowed
$25,469
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 100 | 39 | $107 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 77 | 33 | $71 | |
99239 |
Hospital discharge day management, more than 30 minutes | 41 | 38 | $104 | |
90791 |
Psychiatric diagnostic evaluation | 37 | 34 | $134 |
In context: peer comparison
Among 2 peers in this city , average services per provider: 62. This provider delivers 4.1× the peer median.Open Payments
Industry payments received
All-time total
$22
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Indivior Inc. | 1 | $22.47 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
145
Patients
120
Total drug cost
$1,451
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Benztropine Mesylate | Generic | 25 | 22 | $219 |
| Hydroxyzine Pamoate | Generic | 24 | 21 | $303 |
| Trazodone Hcl | Generic | 24 | 22 | $156 |
| Quetiapine Fumarate | Generic | 23 | 16 | $227 |
| Olanzapine | Generic | 21 | 14 | $264 |
| Gabapentin | Generic | 15 | 14 | $178 |
| Risperidone | Generic | 13 | 11 | $103 |
Frequently asked questions
What is Dr. Alexander O'Brien's medical specialty?
Dr. Alexander O'Brien practices Psychiatric/Mental Health Nurse Practitioner in Chestnut Hill, MA.
Where does Dr. Alexander O'Brien practice?
Dr. Alexander O'Brien practices at 300 South St, Chestnut Hill, MA 024673694. Office phone: 6174690300.
What is Dr. Alexander O'Brien's NPI?
Dr. Alexander O'Brien's National Provider Identifier (NPI) is 1598420770, issued by NPPES.
What procedures does Dr. Alexander O'Brien commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Hospital discharge day management (HCPCS 99239). Source: CMS Medicare Physician & Other Practitioners file.