Monica L. O'Brien, NP
Psychiatric/Mental Health Nurse Practitioner · Brockton, MA
Monica L. O'Brien, NP is a psychiatric/mental health nurse practitioner with a practice address in Brockton, Massachusetts, and NPI 1639459498, issued on Aug 25, 2011. Check the license (Massachusetts RN231518, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Monica L. O'Brien
- Credential
- NP
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License number
- RN231518 MA
Self-reported in NPPES; status is on the state search - Practice location
- 680 Centre St, Brockton, MA 02302
- Phone
- (508) 941-7228
- Enumerated
- Aug 25, 2011
- Record last updated
- Apr 25, 2022
- Medicare enrollment
- Enrolled (PECOS I20161206000511); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health nurse practitioner records → All 2,169 in Massachusetts → Look up another NPI →
Also registered at 680 Centre St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Monica L. O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license RN231518Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% more Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024
1,805 Medicare Part D claims for 207 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Trazodone Hcl107 claims
- Clonazepam93 claims
- Aripiprazole80 claims
- Lorazepam76 claims
- Escitalopram Oxalate74 claims
- Quetiapine Fumarate70 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.
Industry payments in 2024: $222.06
10 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Pharmaceuticals, Inc. The 23,362 providers of this specialty with any payment received $1,027.77 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Signature Healthcare Medical Group IncBrockton, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Monica L. O'Brien among 2,169 psychiatric/mental health nurse practitioner records in Massachusetts
Monica L. O'Brien, NP is one of 2,169 psychiatric/mental health nurse practitioner records with a practice address in Massachusetts. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 13% of them.
- NPI issued2011 · 13% of these records are older, 84% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2012 · median 2021 among the 1,309 with a school on file
- Record last updated2022 · 23% 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 Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
74 psychiatric/mental health nurse practitioner records list a practice address in Brockton
They are 74 of the 4,287 NPPES records with a practice address in Brockton, and 2,169 psychiatric/mental health nurse practitioner records in Massachusetts.
All 2,169 in Massachusetts → Every provider in Brockton → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- Isandra Arams, RNBrockton, MA 023021750832861
- Gregory Bucha, APRNBrockton, MA 023021194601229
- Henrietta Ewuzie, NPBrockton, MA 023021003680794
- Luke IgweobiBrockton, MA 023021063237832
- Ann Irorere, NURSE PRACTITIONERBrockton, MA 023021114203767
- Emelda Iwobi, PMHNP-BCBrockton, MA 023021538895016
- Marise Jeanty, NPBrockton, MA 023021598569980
- Abigail NganyeBrockton, MA 023021528694361
Common questions
What is Monica L. O'Brien, NP's NPI number?
Monica L. O'Brien, NP's National Provider Identifier (NPI) is 1639459498, issued on Aug 25, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Monica L. O'Brien, NP located?
The NPPES record lists a practice address at 680 Centre St, Brockton, MA, 02302. Phone: (508) 941-7228. Providers update this record themselves, so call before visiting.
How can I verify Monica L. O'Brien, NP's license?
NPPES lists Massachusetts license number RN231518, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Monica L. O'Brien, NP prescribe under Medicare Part D?
In 2024, Monica L. O'Brien, NP had 1,805 Medicare Part D claims for 207 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.