Ruth Ann Williamson, PMHNP-BC
Psychiatric/Mental Health Nurse Practitioner · Massena, NY
Ruth Ann Williamson, PMHNP-BC is a psychiatric/mental health nurse practitioner with a practice address in Massena, New York, and NPI 1386264356, issued on Apr 20, 2020. Check the license (New York F402952-01, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ruth Ann Williamson
- Credential
- PMHNP-BC
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License number
- F402952-01 NY
Self-reported in NPPES; status is on the state search - Practice location
- 16 Phillips St, Massena, NY 13662
- Phone
- (315) 764-8076
- Enumerated
- Apr 20, 2020
- Record last updated
- Nov 28, 2023
- Medicare enrollment
- Enrolled (PECOS I20200520003533); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health nurse practitioner records → All 4,129 in New York → Look up another NPI →
Also registered at 16 Phillips St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Deborah Alguire, RNRegistered Nurse1124831458
- Sangita ChadhaHealth & Wellness Coach1205419538
- Pamela CollinsSocial Worker1760180657
- Justus Cross, LMSWSocial Worker1639916091
- Wendy CummingsSocial Worker1679385561
- Brandy DeloshPeer Specialist1497514020
Verify Ruth Ann Williamson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this profession
Search for license F402952-01Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
44% more Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024
1,307 Medicare Part D claims for 132 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Lamotrigine76 claims
- Aripiprazole58 claims
- Sertraline Hcl53 claims
- Lorazepam51 claims
- Rexulti51 claims
- Duloxetine Hcl49 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: $112.71
4 payments; by number, the most common kind was food and beverage; the largest payer was Iti, Inc. (d/b/a Intra-Cellular Therapies, 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
- Citizen Advocates, IncMalone, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ruth Ann Williamson among 4,129 psychiatric/mental health nurse practitioner records in New York
Ruth Ann Williamson, PMHNP-BC is one of 4,129 psychiatric/mental health nurse practitioner records with a practice address in New York. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 58% of them.
- NPI issued2020 · 58% of these records are older, 37% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileYes · 46% of these records are
- Graduated2019 · median 2021 among the 1,914 with a school on file
- Record last updated2023 · 34% 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 New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 psychiatric/mental health nurse practitioner records list a practice address in Massena
They are 4 of the 259 NPPES records with a practice address in Massena, and 4,129 psychiatric/mental health nurse practitioner records in New York.
All 4,129 in New York → Every provider in Massena → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- Kathy Green, ARNPMassena, NY 136621306824784
- Jill Kennedy, PMHNP-BCMassena, NY 136621275904419
- Nada Ross, FPMHNP-BCMassena, NY 136621578302329
- Kim Miller- Bauer, PMHNPMannsville, NY 136611972020378
- Melissa Ayen, PMHNP-BCOgdensburg, NY 136691801188560
- Maribeth Evans, RN, NPOgdensburg, NY 136691003476888
- Laura Irvine, NPPOgdensburg, NY 136691952897159
- Alexandra Laclair, PMHNPOgdensburg, NY 136691891377438
Common questions
What is Ruth Ann Williamson, PMHNP-BC's NPI number?
Ruth Ann Williamson, PMHNP-BC's National Provider Identifier (NPI) is 1386264356, issued on Apr 20, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Ruth Ann Williamson, PMHNP-BC located?
The NPPES record lists a practice address at 16 Phillips St, Massena, NY, 13662. Phone: (315) 764-8076. Providers update this record themselves, so call before visiting.
How can I verify Ruth Ann Williamson, PMHNP-BC's license?
NPPES lists New York license number F402952-01, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does Ruth Ann Williamson, PMHNP-BC prescribe under Medicare Part D?
In 2024, Ruth Ann Williamson, PMHNP-BC had 1,307 Medicare Part D claims for 132 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.