Ann O'Brien, APNP
NPI 1609908052 · Psychiatric/Mental Health Nurse Practitioner · Eastport, ME
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ann O'Brien, APNP is a Psychiatric/Mental Health Nurse Practitioner provider in Eastport, ME (NPI 1609908052).
Provider details
- NPI number
- 1609908052
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APNP
- Sex
- Female
- Sole proprietor
- No
- License
- 028484 (ME)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 38 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Olanzapine | 106 | — |
| Clonazepam | 98 | — |
| Trazodone Hcl | 91 | 12 |
| Quetiapine Fumarate | 83 | — |
| Sertraline Hcl | 73 | — |
| Lamotrigine | 64 | 11 |
| Gabapentin | 55 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-12
- Last updated
- 2009-09-15
Frequently asked questions
- What is Ann O'Brien's NPI number?
- Ann O'Brien's National Provider Identifier (NPI) is 1609908052, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ann O'Brien's specialty?
- Ann O'Brien is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Ann O'Brien located?
- Ann O'Brien's practice location on file with NPPES is 30 Boynton St, Eastport, ME 04631-1306.
- What is Ann O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Ann O'Brien is (207) 853-6001.
- Does Ann O'Brien accept Medicare?
- Ann O'Brien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ann O'Brien's NPI active?
- Yes — Ann O'Brien's NPI (1609908052) is active in the NPPES registry as of the last update on 2009-09-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.