Ann E. O'Brien, APNP
Psychiatric/Mental Health Nurse Practitioner · Eastport, ME
Ann E. O'Brien, APNP is a psychiatric/mental health nurse practitioner with a practice address in Eastport, Maine, and NPI 1609908052, issued on Mar 12, 2007. Check the license (Maine 028484, as entered in NPPES) with the Maine board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ann E. O'Brien
- Credential
- APNP
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License number
- 028484 ME
Self-reported in NPPES; status is on the state search - Practice location
- 30 Boynton St, Eastport, ME 04631
- Phone
- (207) 853-6001
- Enumerated
- Mar 12, 2007
- Record last updated
- Sep 15, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (207) 853-4031
- Medicaid ID
- 268440099 ME
- Medicare enrollment
- Enrolled (PECOS I20091001000361); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health nurse practitioner records → All 472 in Maine → Look up another NPI →
Also registered at 30 Boynton St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Brass, LADCAddiction (Substance Use Disorder) Counselor1427302272
- Brian BrooksMental Health Counselor1225223357
- Jan Brown, CADCCounselor1871807842
- Tammy CarrProfessional Counselor1528483682
- John Cassidy, PA-CPhysician Assistant1891890166
- Kathi Dimiceli, LCSWClinical Social Worker1205847043
Verify Ann E. O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maine board licenses this profession
Search for license 028484Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
57% more Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024
1,423 Medicare Part D claims for 52 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Olanzapine106 claims
- Clonazepam98 claims
- Trazodone Hcl91 claims
- Quetiapine Fumarate83 claims
- Sertraline Hcl73 claims
- Lamotrigine64 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Eastport Health Care, IncEastport, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ann E. O'Brien among 472 psychiatric/mental health nurse practitioner records in Maine
Ann E. O'Brien, APNP is one of 472 psychiatric/mental health nurse practitioner records with a practice address in Maine. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 16% of them.
- NPI issued2007 · 16% of these records are older, 78% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1992 · median 2019 among the 303 with a school on file
- Record last updated2009 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 psychiatric/mental health nurse practitioner records list a practice address in Eastport
They are 2 of the 25 NPPES records with a practice address in Eastport, and 472 psychiatric/mental health nurse practitioner records in Maine.
All 472 in Maine → Every provider in Eastport → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- Jennifer Doucette, PMHNPEastport, ME 046311437090065
- Kristina BaileyCherryfield, ME 046221043919038
- Megan Leslie, PMHNP-BCCalais, ME 046191528878394
- Brittany VoisineCalais, ME 046191760131510
- Andrea Lopez, RN, CRNPBlue Hill, ME 046141619301363
- Kenzie Densmore, PMHNPBar Harbor, ME 046091619816469
- Audrey Farley, PMHNPBar Harbor, ME 046091891417143
- Shannon Murray, CRNA, PMHNP-BCBar Harbor, ME 046091689951659
Common questions
What is Ann E. O'Brien, APNP's NPI number?
Ann E. O'Brien, APNP's National Provider Identifier (NPI) is 1609908052, issued on Mar 12, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ann E. O'Brien, APNP located?
The NPPES record lists a practice address at 30 Boynton St, Eastport, ME, 04631. Phone: (207) 853-6001. Providers update this record themselves, so call before visiting.
How can I verify Ann E. O'Brien, APNP's license?
NPPES lists Maine license number 028484, as entered by the provider. Search the Maine board that licenses this profession; the NPPES record confirms identity only.
How much does Ann E. O'Brien, APNP prescribe under Medicare Part D?
In 2024, Ann E. O'Brien, APNP had 1,423 Medicare Part D claims for 52 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 906. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.