Mark Williams, PNHNP-BC
Psychiatric/Mental Health Nurse Practitioner · Reno, NV
Mark Williams, PNHNP-BC is a psychiatric/mental health nurse practitioner with a practice address in Reno, Nevada, and NPI 1639847049, issued on Aug 31, 2021. Check the license (Nevada 836585, as entered in NPPES) with the Nevada board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark Williams
- Credential
- PNHNP-BC
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License number
- 836585 NV
Self-reported in NPPES; status is on the state search - Practice location
- 1155 Mill St, Reno, NV 89502
- Phone
- (775) 982-2860
- Enumerated
- Aug 31, 2021
- Record last updated
- Jul 9, 2024
- Medicare enrollment
- Enrolled (PECOS I20220114000695); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health nurse practitioner records → All 531 in Nevada → Look up another NPI →
Also registered at 1155 Mill St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mark Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Nevada board licenses this profession
Search for license 836585Check 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
14 Medicare Part D claims, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 62.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Community Care Services LLCReno, NV
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Williams among 531 psychiatric/mental health nurse practitioner records in Nevada
Mark Williams, PNHNP-BC is one of 531 psychiatric/mental health nurse practitioner records with a practice address in Nevada. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 40% of them.
- NPI issued2021 · 40% of these records are older, 53% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2020 · median 2021 among the 335 with a school on file
- Record last updated2024 · 16% 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 Nevada practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatric/Mental Health Nurse Practitioner providers in Nevada
There are 531 psychiatric/mental health nurse practitioner records in Nevada.
All 531 in Nevada → Every provider in Reno → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- Deborah Arnow, APRNReno, NV 895021740537125
- Evelyn Cunningham, PMHNPReno, NV 895021811469273
- Verlande DorilasReno, NV 895021396526497
- David Ealy, PMHNPReno, NV 895021346708419
- Allison Fry, APRN-CNPReno, NV 895021407215809
- Kaiwen Jiang, DNPReno, NV 895021366035750
- Alice Kim, MSN, FNP-BCReno, NV 895021497144620
- Jessica Lowery, PMHNPReno, NV 895021679389712
Common questions
What is Mark Williams, PNHNP-BC's NPI number?
Mark Williams, PNHNP-BC's National Provider Identifier (NPI) is 1639847049, issued on Aug 31, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Mark Williams, PNHNP-BC located?
The NPPES record lists a practice address at 1155 Mill St, Reno, NV, 89502. Phone: (775) 982-2860. Providers update this record themselves, so call before visiting.
How can I verify Mark Williams, PNHNP-BC's license?
NPPES lists Nevada license number 836585, as entered by the provider. Search the Nevada board that licenses this profession; the NPPES record confirms identity only.
How much does Mark Williams, PNHNP-BC prescribe under Medicare Part D?
In 2024, Mark Williams, PNHNP-BC had 14 Medicare Part D claims; the average among psychiatric/mental health nurse practitioner prescribers was 906. Part D covers Medicare prescriptions only.
What is Mark Williams, PNHNP-BC's MIPS final score?
The 2023 MIPS final score is 62.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.