Richard Williamson, MD
Neurological Surgery Physician · Chandler, AZ
Richard Williamson, MD is a neurological surgery physician with a practice address in Chandler, Arizona, and NPI 1609040609, issued on Apr 22, 2008. Check the license (Arizona 47644, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Richard Williamson
- Credential
- MD
- Primary taxonomy
- Neurological Surgery Physician 207T00000X
- License numbers
- 47644 AZ
MD457377 PA
Self-reported in NPPES; status is on the state search - Practice location
- 1875 W Frye RD Ste 300, Chandler, AZ 85224
- Phone
- (480) 917-5600
- Enumerated
- Apr 22, 2008
- Record last updated
- May 8, 2025
- Fax
- (602) 294-8286
- Medicaid IDs
- 103120121 PA
186944 AZ - Medicare enrollment
- Enrolled (PECOS I20240522003818); accepts Medicare assignment
- Medical or professional school
- University Of Pittsburgh School Of Medicine, 2009
- Entity
- Type 1 · individual
8 nearest neurological surgery physician records → All 198 in Arizona → Look up another NPI →
Also registered at 1875 W Frye RD Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Robin Adamson, PA-CMedical Physician Assistant1649220401
- Kaith Almefty, MDNeurological Surgery Physician1750518627
- Krista Autuori, PA-CSurgical Physician Assistant1952772444
- Steve Chang, MDNeurological Surgery Physician1154501294
- Tsinsue Chen, M.D.Neurological Surgery Physician1396031217
- Leah Emami, ACNPNurse Practitioner1760894489
Verify Richard Williamson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 47644Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5% fewer Medicare Part D claims than the average neurological surgery physician in 2024
164 Medicare Part D claims for 61 beneficiaries, against an average of 172 among the 4,378 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Clopidogrel62 claims
- Gabapentin23 claims
- Brilinta12 claims
- Methocarbamol11 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 MIPS final score for 2023 (Medicare payment program): 93.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $8,292.93
25 payments; by number, the most common kind was food and beverage; the largest payer was Medical Device Business Services, Inc. The 5,377 providers of this specialty with any payment received $14,925.58 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.
Bills Medicare through one group practice
- Neurosurgical Associates LtdGilbert, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Richard Williamson among 198 neurological surgery physician records in Arizona
Richard Williamson, MD is one of 198 neurological surgery physician records with a practice address in Arizona. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 47% of them.
- NPI issued2008 · 47% of these records are older, 46% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2009 · median 2004 among the 124 with a school on file
- Record last updated2025 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207T00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurological Surgery Physician providers in Arizona
There are 198 neurological surgery physician records in Arizona.
All 198 in Arizona → Every provider in Chandler → Neurological Surgery Physician nationwide →
The 8 neurological surgery physician records with the nearest ZIP codes
- Kaith Almefty, MDChandler, AZ 852241750518627
- Steve Chang, MDChandler, AZ 852241154501294
- Tsinsue Chen, M.D.Chandler, AZ 852241396031217
- David Fusco, MDChandler, AZ 852241659551687
- Mark Garrett, M.D.Chandler, AZ 852241669652699
- Taro Kaibara, MDChandler, AZ 852241467417444
- Farrukh Qureshi, M.DChandler, AZ 852241679511158
- Robert Koffie, MDGilbert, AZ 852331760744460
Common questions
What is Richard Williamson, MD's NPI number?
Richard Williamson, MD's National Provider Identifier (NPI) is 1609040609, issued on Apr 22, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Richard Williamson, MD located?
The NPPES record lists a practice address at 1875 W Frye RD Ste 300, Chandler, AZ, 85224. Phone: (480) 917-5600. Providers update this record themselves, so call before visiting.
How can I verify Richard Williamson, MD's license?
NPPES lists Arizona license number 47644, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Richard Williamson, MD prescribe under Medicare Part D?
In 2024, Richard Williamson, MD had 164 Medicare Part D claims for 61 beneficiaries; the average among neurological surgery physician prescribers was 172. Part D covers Medicare prescriptions only.
What is Richard Williamson, MD's MIPS final score?
The 2023 MIPS final score is 93.8 of 100. 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.