Keith C. Williams, PMHNP
Psychiatric/Mental Health Nurse Practitioner · Elmira, NY
Keith C. Williams, PMHNP is a psychiatric/mental health nurse practitioner with a practice address in Elmira, New York, and NPI 1649701533, issued on Mar 23, 2017. Check the license (New York 405911, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Keith C. Williams
- Credential
- PMHNP
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License number
- 405911 NY
Self-reported in NPPES; status is on the state search - Practice location
- 200 Madison Ave Ste 2B, Elmira, NY 14901
- Phone
- (607) 732-1310
- Enumerated
- Mar 23, 2017
- Record last updated
- Sep 11, 2024
- Fax
- (607) 733-0940
- Medicare enrollment
- Enrolled (PECOS I20240821002956); accepts Medicare assignment
- 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 200 Madison Ave Ste 2B
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Khizran Agha, MDStudent in an Organized Health Care Education/Training Program1053107482
- Lewis Cabibi, DOFamily Medicine Physician1073968756
- William Clack, MDDermatology Physician1053490805
- Donald Foster, D.O.Family Medicine Physician1679960066
- Britnee Monticello, DOStudent in an Organized Health Care Education/Training Program1568105708
Verify Keith C. Williams 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 405911Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024
21 Medicare Part D claims, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D.
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: $148.28
2 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.
One hospital affiliation
- Arnot Ogden Medical CenterElmira, NY · Acute Care Hospitals2 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Keith C. Williams among 4,129 psychiatric/mental health nurse practitioner records in New York
Keith C. Williams, PMHNP 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 2017, is newer than 43% of them.
- NPI issued2017 · 43% of these records are older, 53% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileYes · 46% of these records are
- Graduated2024 · median 2021 among the 1,914 with a school on file
- Record last updated2024 · 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).
27 psychiatric/mental health nurse practitioner records list a practice address in Elmira
They are 27 of the 1,746 NPPES records with a practice address in Elmira, and 4,129 psychiatric/mental health nurse practitioner records in New York.
All 4,129 in New York → Every provider in Elmira → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- Angela ArcovioElmira, NY 149011508068214
- Lisa Daly, PMHNPElmira, NY 149011841631751
- Richard DziennikElmira, NY 149011689080970
- Angela Gillette, NPElmira, NY 149011467624445
- Rebecca Golding, ANP,PMHNP,DNPElmira, NY 149011629117064
- Jennifer Hollenbeck, NPElmira, NY 149011336510411
- Antoinette Maria, NPElmira, NY 149011801267976
- David Nelson, PMHNP-BCElmira, NY 149011841674793
Common questions
What is Keith C. Williams, PMHNP's NPI number?
Keith C. Williams, PMHNP's National Provider Identifier (NPI) is 1649701533, issued on Mar 23, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Keith C. Williams, PMHNP located?
The NPPES record lists a practice address at 200 Madison Ave Ste 2B, Elmira, NY, 14901. Phone: (607) 732-1310. Providers update this record themselves, so call before visiting.
How can I verify Keith C. Williams, PMHNP's license?
NPPES lists New York license number 405911, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does Keith C. Williams, PMHNP prescribe under Medicare Part D?
In 2024, Keith C. Williams, PMHNP had 21 Medicare Part D claims; 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.