Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

John M Williamson

Individual provider Psychiatric/Mental Health Nurse Practitioner · NPI 1740847946

John M Williamson is a Nurse Practitioner in Westerville, Ohio. Qualified in 2019, 7 years ago. Practices with Serenity Behavioral Health Services, Inc, a 16-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Ohio.

Years since qualifying
7
Licensed in
OH
In the registry since
2019
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Practice location Address checks out

5011 Pine Creek Dr
Westerville, OH 43081-4849
Phone: (614) 948-3273
Fax: (855) 740-2025
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatric/Mental Health Nurse Practitioner (primary) Taxonomy 363LP0808X · Licence APRN.CNP.025091 (OH)

Record details

NPI number1740847946
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedMay 22, 2019
Last updated in NPPESApril 1, 2025
Certification dateApril 1, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2019 (7 years in practice)
Group practice Serenity Behavioral Health Services, Inc. — 16 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Compensation for services other than consulting , including serving as faculty or as a speaker at a venue other than a continuing education program $9,625 7 payments
Food and Beverage $745 28 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Colleagues at Serenity Behavioral Health Services, Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 16 clinicians in the practice; 12 are shown here.

Other providers in Westerville