John Ross Williamson, APRN, NPC

John Williamson practices at Alliancehealth Clinton in Clinton, Oklahoma.

John Williamson's NPI, 1386050441, was assigned on July 9, 2014. John Williamson holds Oklahoma license 102511.

John Williamson's primary practice is Alliancehealth Clinton, at 100 N 30th St, Clinton, OK 73601 in Custer County. The practice phone is (580) 323-0261.

John Williamson's primary practice is Alliancehealth Clinton in Clinton, Oklahoma. John Williamson is also affiliated with Clinton Regional Hospital. The medical group on file is Clinton Regional Hospital. Dmand AI also links John Williamson to 6 more hospitals and 9 medical groups, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where John Williamson practices, 7 sites in all. Vendor and product names are available with a free account.

Nurse practitioner is John Williamson's primary specialty in the NPI Registry, under taxonomy code 363L00000X. John Williamson is licensed in Oklahoma.

CMS counts 93 Medicare patients who saw John Williamson in 2024. The largest group is 75 to 84, with 36 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 27% are also on Medicaid. Their average risk score is 1.71, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts John Williamson's median patient age at 54, with 53% women.

In 2024, John Williamson wrote 104 Medicare Part D claims for 80 patients. 88% of them were for generic drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 86 out of 100 for John Williamson for performance year 2024, reported as part of a group. John Williamson accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

CMS Open Payments shows 1 general payment to John Williamson from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $125.