Stephen Walter Williams, D.O.
Family Medicine Physician · Anthem, AZ
Stephen Walter Williams, D.O. is a family medicine physician with a practice address in Anthem, Arizona, and NPI 1902933823, issued on Feb 27, 2007. Check the license (Arizona 2443, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Stephen Walter Williams
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 2443 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 3648 W Anthem Way, Anthem, AZ 85086
- Phone
- (623) 434-6444
- Enumerated
- Feb 27, 2007
- Record last updated
- Sep 24, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (623) 434-6448
- Medicaid ID
- 281098 AZ
- Medicare enrollment
- Enrolled (PECOS I20060307000360); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,119 in Arizona → Look up another NPI →
Also registered at 3648 W Anthem Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jodi Palmer, FNPNurse Practitioner1578942165
- Melanie Patton, MDFamily Medicine Physician1063405090
- John Pham, D.O.Adult Medicine Physician1487851358
- Erin Shelton, NP-C, RNFamily Nurse Practitioner1447622782
- Heather Smith, MSN, FNP-C, CLTNurse Practitioner1538656715
- Freyda Velazquez Perez, MDFamily Medicine Physician1447789359
Verify Stephen Walter Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 2443Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.0 times the Medicare Part D claims of the average family medicine physician in 2024
7,234 Medicare Part D claims for 583 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 245 claims were for opioids.
Most prescribed
- Atorvastatin Calcium328 claims
- Levothyroxine Sodium318 claims
- Lisinopril221 claims
- Amlodipine Besylate217 claims
- Losartan Potassium202 claims
- Metoprolol Succinate149 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.
Industry payments in 2024: $38.36
2 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 55,478 providers of this specialty with any payment received $902.55 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
- Summit Medical Group Arizona LLCGoodyear, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen Walter Williams among 3,119 family medicine physician records in Arizona
Stephen Walter Williams, D.O. is one of 3,119 family medicine physician records with a practice address in Arizona. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 45% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1987 · median 2006 among the 1,775 with a school on file
- Record last updated2013 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 family medicine physician records list a practice address in Anthem
They are 4 of the 269 NPPES records with a practice address in Anthem, and 3,119 family medicine physician records in Arizona.
All 3,119 in Arizona → Every provider in Anthem → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Matthew Braig, D.O.Phoenix, AZ 850861356705610
- Carlos Mancilla, M.D.Phoenix, AZ 850861558894204
- Richard Melde, M.D.Phoenix, AZ 850861710027438
- Melanie Patton, MDAnthem, AZ 850861063405090
- Freyda Velazquez Perez, MDAnthem, AZ 850861447789359
- Emily Winett, M.D.Anthem, AZ 850861063444552
- David Foy, D.O.Phoenix, AZ 850851497747448
- Stephen Hammett, D.O.New River, AZ 850871659593739
Common questions
What is Stephen Walter Williams, D.O.'s NPI number?
Stephen Walter Williams, D.O.'s National Provider Identifier (NPI) is 1902933823, issued on Feb 27, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Walter Williams, D.O. located?
The NPPES record lists a practice address at 3648 W Anthem Way, Anthem, AZ, 85086. Phone: (623) 434-6444. Providers update this record themselves, so call before visiting.
How can I verify Stephen Walter Williams, D.O.'s license?
NPPES lists Arizona license number 2443, 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 Stephen Walter Williams, D.O. prescribe under Medicare Part D?
In 2024, Stephen Walter Williams, D.O. had 7,234 Medicare Part D claims for 583 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
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.