Dr. Richard Williamson Jr., MD

Dr. Williamson practices at Dignity Health Chandler Regional Medical Center in Chandler, Arizona, part of CommonSpirit Health.

Dr. Williamson's NPI, 1609040609, was assigned on April 22, 2008. Dr. Williamson graduated from University of Pittsburgh School of Medicine in 2009. Dr. Williamson holds Pennsylvania license MD457377.

Dr. Williamson's primary practice is Dignity Health Chandler Regional Medical Center, at 1955 West Frye Road, Chandler, AZ 85224 in Maricopa County. The practice phone is (480) 728-3000.

Dr. Williamson's primary practice is Dignity Health Chandler Regional Medical Center in Chandler, Arizona, part of CommonSpirit Health. Dr. Williamson is also affiliated with Dignity Health St. Joseph's Hospital and Medical Center. The medical group on file is Barrow Brain and Spine. Dmand AI also links Dr. Williamson to 3 more hospitals and 1 group practice or clinic, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Williamson practices, 6 sites in all. Vendor and product names are available with a free account.

Neurological surgery is Dr. Williamson's primary specialty in the NPI Registry, under taxonomy code 207T00000X. Dr. Williamson is licensed in Pennsylvania.

CMS data shows 380 Medicare services from Dr. Williamson across 13 procedure codes in 2024, for 281 Medicare patients. Medicare paid $55,773 for them.

CMS counts 281 Medicare patients who saw Dr. Williamson in 2024. The largest group is 65 to 74, with 131 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 8% are also on Medicaid. Their average risk score is 1.29, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Williamson's median patient age at 68, with 51% women.

In 2024, Dr. Williamson wrote 164 Medicare Part D claims for 61 patients. 93% of them were for generic drugs. CMS names the drug for 108 of them, across 4 drugs with 11 or more claims each, at $5,995 in total drug cost. In 2023, CMS named 143 claims across 6 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 94 out of 100 for Dr. Williamson for performance year 2024, reported through an alternative payment model (APM). Dr. Williamson accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Williamson as offering telehealth. CMS counts 48 procedures of spinal fusion by Dr. Williamson, more than 54% of the clinicians it reports for that procedure.

Laminectomy or laminotomy (partial removal of spine bones): 1 to 10 procedures (CMS shows small counts as a range)

Dmand AI links Dr. Williamson to 1 clinical trial. Conditions studied include Cerebral Hemorrhage and Intracranial Hemorrhages. Open Payments lists research payments to Dr. Williamson that name 1 trial.

CMS Open Payments shows 224 general payments to Dr. Williamson from 26 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 44% of the total. Medical Device Business Services, Inc. paid the most, $7,913. It also lists 1 research payment totaling $444 in 2018, naming 1 clinical trial.

Dr. Williamson graduated from University of Pittsburgh School of Medicine in 2009.