Sondra Williams, PA
Physician Assistant · Flagstaff, AZ
Sondra Williams, PA is a physician assistant with a practice address in Flagstaff, Arizona, and NPI 1316461296, issued on Aug 1, 2017. Check the license (Arizona 6841, as entered in NPPES) with the Arizona board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Sondra Williams
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 6841 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 2000 S Thompson St, Flagstaff, AZ 86001
- Phone
- (928) 226-6400
- Enumerated
- Aug 1, 2017
- Entity
- Type 1 · individual
Also registered at 2000 S Thompson St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Andrew Atiemo, M.D.Cardiovascular Disease Physician1285678748
- Bryan Barker, DPTPhysical Therapist1942615778
- Martha Barlow, CNMNurse Practitioner1770846842
- Norria Brice, ACNP-BCAcute Care Nurse Practitioner1407131758
- Barbara Burggraaff, MDOtolaryngology Physician1730112442
- Renzo Cataldo, M.D.Specialist1174526677
Verify Sondra Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Arizona board licenses this profession
Search for license 6841Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
33% fewer Medicare Part D claims than the average physician assistant in 2024
555 Medicare Part D claims for 159 beneficiaries, against an average of 832 among the 95,030 providers of this specialty who prescribed in Part D. Brand-name drugs were 39% of claims.
Most prescribed
- Eliquis169 claims
- Metoprolol Succinate119 claims
- Flecainide Acetate52 claims
- Xarelto43 claims
- Diltiazem 24hr Er (Cd)23 claims
- Dofetilide23 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 practice group's Medicare quality score for 2023: 77 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).
One hospital or facility affiliation
- Kayenta Alternative Rural HospitalDennehotso, AZ · Acute Care Hospitals
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
61 physician assistant records list a Flagstaff practice address
They are 61 of the 2,419 NPPES records with a Flagstaff practice address, and 3,428 physician assistant records in Arizona.
All 61 in Flagstaff → All 3,428 in Arizona → Every provider in Flagstaff →
Other physician assistant records in Arizona
- Lindsey Abajian, PA-CPhoenix, AZ1306125620
- Allison Abbey, PA-CCottonwood, AZ1871257246
- Carley Abbott, PA-CChandler, AZ1649959792
- Delmas Abbott, PA-CPrescott, AZ1437452836
- Sarah Abbott, PAPhoenix, AZ1609969666
- Kristen Abel, PA-CMesa, AZ1346037181
- Abigail Abellana, PA-CScottsdale, AZ1629931670
- Heidi Abersfeller, PA CCasa Grande, AZ1356379754
- Collin Abitz, PAGlendale, AZ1376342386
- Colleen AbramsChandler, AZ1407285448
Common questions
What is Sondra Williams, PA's NPI number?
Sondra Williams, PA's National Provider Identifier (NPI) is 1316461296, issued on Aug 1, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Sondra Williams, PA located?
The NPPES record lists a practice address at 2000 S Thompson St, Flagstaff, AZ, 86001. Phone: (928) 226-6400. Providers update this record themselves, so call before visiting.
How can I verify Sondra Williams, PA's license?
NPPES lists Arizona license number 6841, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.
How much does Sondra Williams, PA prescribe under Medicare Part D?
In 2024, Sondra Williams, PA had 555 Medicare Part D claims for 159 beneficiaries; the average among physician assistant prescribers was 832. Part D covers Medicare prescriptions only.
What is Sondra Williams, PA's Medicare quality score?
The 2023 MIPS final score is 77 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), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.