Geoffrey Douglas McWilliams, D.O.
Diagnostic Radiology Physician · Sacramento, CA
Geoffrey Douglas McWilliams, D.O. is a diagnostic radiology physician with a practice address in Sacramento, California, and NPI 1538589684, issued on Apr 16, 2014. Check the license (California 14774, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Geoffrey Douglas McWilliams
- Credential
- D.O.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- 14774 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4860 Y St Ste 3100, Sacramento, CA 95817
- Phone
- (916) 703-2273
- Enumerated
- Apr 16, 2014
- Record last updated
- Aug 20, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20191025000270); accepts Medicare assignment
- Medical or professional school
- University Of New England, College Of Osteo Medicine, 2014
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 4,500 in California → Look up another NPI →
Also registered at 4860 Y St Ste 3100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Luke AeiltsStudent in an Organized Health Care Education/Training Program1942888904
- Michael Baggett, MDDiagnostic Radiology Physician1831693902
- Riya BansalStudent in an Organized Health Care Education/Training Program1194584680
- Jeffrey Brown, M.D.Diagnostic Radiology Physician1841636321
- Arjun Byju, MDStudent in an Organized Health Care Education/Training Program1891497723
- Gloria CastanedaStudent in an Organized Health Care Education/Training Program1821882911
Verify Geoffrey Douglas McWilliams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 14774Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 79.5 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).
Industry payments in 2024: $120.73
1 payment: food and beverage; the largest payer was Siemens Medical Solutions USA, Inc. The 8,048 providers of this specialty with any payment received $2,488.38 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 2 group practices
- Tahoe Forest Hospital DistrictTruckee, CA
- University Hospitals Medical Group IncCleveland, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Geoffrey Douglas McWilliams among 4,500 diagnostic radiology physician records in California
Geoffrey Douglas McWilliams, D.O. is one of 4,500 diagnostic radiology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 78% of them.
- NPI issued2014 · 78% of these records are older, 19% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2014 · median 2004 among the 3,130 with a school on file
- Record last updated2019 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in California
There are 4,500 diagnostic radiology physician records in California.
All 4,500 in California → Every provider in Sacramento → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Erik Abrames, M.D.Sacramento, CA 958171558342337
- Carol Beatty, M.D.Sacramento, CA 958171043297807
- Jasjeet Bindra, M.D.Sacramento, CA 958171962488148
- Dillon Chen, MDSacramento, CA 958171740277060
- Brian Dahlin, M.D.Sacramento, CA 958171861478042
- Raymond Dougherty, M.D.Sacramento, CA 958171699751487
- Arthur Dublin, M.D.Sacramento, CA 958171669458477
- Eva Escobedo, M.D.Sacramento, CA 958171619955648
Common questions
What is Geoffrey Douglas McWilliams, D.O.'s NPI number?
Geoffrey Douglas McWilliams, D.O.'s National Provider Identifier (NPI) is 1538589684, issued on Apr 16, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Geoffrey Douglas McWilliams, D.O. located?
The NPPES record lists a practice address at 4860 Y St Ste 3100, Sacramento, CA, 95817. Phone: (916) 703-2273. Providers update this record themselves, so call before visiting.
How can I verify Geoffrey Douglas McWilliams, D.O.'s license?
NPPES lists California license number 14774, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Geoffrey Douglas McWilliams, D.O.'s MIPS final score?
The 2023 MIPS final score is 79.5 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.