Dr. Stephen Walter Williams, DO
- Medicare services, 2024
- 3,183
- Medicare patients, 2024
- 404
- Part D claims, 2024
- 7,234
- Hospital affiliations
- 2
- Industry payments
- $1,665
- Practice address
- 5620 W Thunderbird Rd, Glendale, AZ 85306
- Practice phone
- Call (844) 969-0686
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Summit Medical Group Arizona
Glendale, Arizona
Find Dr. Williams' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Stephen Walter Williams is a family medicine physician in Glendale, Arizona
Dr. Williams practices at Summit Medical Group Arizona in Glendale, Arizona.
Dr. Williams' NPI, 1902933823, was assigned on February 27, 2007. Dr. Williams holds Arizona license 2443.
- NPI
- 1902933823NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6103833702
- NPI enumeration date
- February 27, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (844) 969-0686
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Stephen Walter Williams practices at Summit Medical Group Arizona in Glendale, Arizona
Dr. Williams' primary practice is Summit Medical Group Arizona, at 5620 W Thunderbird Rd, Glendale, AZ 85306 in Maricopa County. The practice phone is (844) 969-0686.
- Summit Medical Group Arizona5620 W Thunderbird Rd, Glendale, AZ 85306 · Maricopa CountyPhone(844) 969-0686
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Stephen Walter Williams is affiliated with 4 sites of care and 1 medical group
Dr. Williams' primary practice is Summit Medical Group Arizona in Glendale, Arizona. Dr. Williams is also affiliated with HonorHealth John C. Lincoln Medical Center. The medical group on file is Village Medical. Dmand AI also links Dr. Williams to 1 more hospital and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Stephen Walter Williams' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Williams practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Summit Medical Group Arizona | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Stephen Walter Williams is one of 2,549 family medicine physicians in Arizona
Family medicine is Dr. Williams' primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Williams is licensed in Arizona.
Specialties and state licenses
- Family medicine, ArizonaPrimary
Family medicine physicians near Dr. Williams
Counts of family medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Stephen Walter Williams billed Medicare for 3,183 services in 2024
CMS data shows 3,183 Medicare services from Dr. Williams across 31 procedure codes in 2024, for 404 Medicare patients. Medicare paid $133,888 for them. Every service was in an office.
Dr. Williams' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 8242024: 1,01723%
- Other services
- 2023: 3822024: 911138%
- Office and hospital visits
- 2023: 7512024: 8098%
- Surgery
- 2023: 3582024: 3551%
- Tests and treatments
- 2023: 1272024: 9128%
- Imaging
- 2023: 232024: 0100%
Dr. Williams compared with the Arizona median for family medicine physicians, 2024
- Dr. Williams
- Arizona median
- Medicare services
- 3,183vs 3309.6 times
- Medicare patients
- 404vs 1482.7 times
- Part D claims
- 6,549vs 6829.6 times
Medians across 2,480 family medicine physicians in Arizona with Dmand AI profiles that report each measure.
Dr. Williams' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Williams?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Williams and other family medicine physicians in Arizona.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Stephen Walter Williams treated 404 Medicare patients in 2024, average age 74
CMS counts 404 Medicare patients who saw Dr. Williams in 2024. The largest group is 65 to 74, with 211 patients. 64% of them have high blood pressure, and 62% have high cholesterol. 4% are also on Medicaid. Their average risk score is 1.02, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Williams' median patient age at 69, with 47% women.
Dr. Williams' Medicare patients by age, 2024
Dr. Williams' Medicare patients by sex, 2024
- Women19348%
- Men21152%
Chronic conditions among Dr. Williams' Medicare patients, 2024
- High blood pressure64%
- High cholesterol62%
- Arthritis45%
- Anxiety26%
- Ischemic heart disease23%
- Chronic kidney disease20%
- Cancer19%
- Diabetes16%
Share of Medicare patients with each condition. A patient can have several.
Dr. Williams' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women47%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Stephen Walter Williams wrote 7,234 Medicare Part D claims in 2024
In 2024, Dr. Williams wrote 7,234 Medicare Part D claims for 583 patients. 88% of them were for generic drugs. CMS names the drug for 6,549 of them, across 138 drugs with 11 or more claims each, at $474,192 in total drug cost. In 2023, CMS named 5,139 claims across 122 drugs.
Dr. Williams' Part D claims by kind of drug, 2024
- Generic6,375 claims88%
- Brand-name822 claims11%
- Other37 claims1%
Dr. Williams' most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Williams' Part D claims, 2024
- Opioids3%245 of 7,234 claims
- Antibiotics2%171 of 7,234 claims
- Antipsychotics, patients 65 and over1%41 of 7,234 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 5,1392024: 6,54927%
Drugs named by CMS: 138 in 2024, 122 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Stephen Walter Williams offers telehealth to Medicare patients
Dr. Williams accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Williams as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Stephen Walter Williams received $1,665 in industry payments from 2016 to 2025
CMS Open Payments shows 53 general payments to Dr. Williams from 18 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $790.
General payments to Dr. Williams by program year, 2016 to 2025
Companies that paid Dr. Williams the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Stephen Walter Williams's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Stephen Walter Williams
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Stephen Walter Williams' NPI number?
Dr. Stephen Walter Williams' NPI number is 1902933823. It was assigned on February 27, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Stephen Walter Williams?
Dr. Stephen Walter Williams is a family medicine physician in Glendale, Arizona. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Stephen Walter Williams practice?
Dr. Williams practices at 5620 W Thunderbird Rd, Glendale, AZ 85306. Dr. Williams' primary practice is Summit Medical Group Arizona in Glendale, Arizona. Dmand AI also links Dr. Williams to 1 hospital and 1 group practice or clinic.
What is Dr. Stephen Walter Williams' office phone number?
The practice phone on file for Dr. Williams is (844) 969-0686.
What is Dr. Stephen Walter Williams' medical license number?
Dr. Williams holds Arizona license 2443.
Which hospitals is Dr. Stephen Walter Williams affiliated with?
Dr. Williams is affiliated with HonorHealth John C. Lincoln Medical Center. Dmand AI links Dr. Williams to 1 more hospital.
What medical group is Dr. Stephen Walter Williams part of?
Dr. Williams is linked to Village Medical.
Does Dr. Stephen Walter Williams accept Medicare?
Yes. CMS data shows Dr. Williams billed Medicare for 3,183 services in 2024, and Dr. Williams accepts Medicare assignment.
Does Dr. Stephen Walter Williams offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Williams as offering telehealth services.
How many Medicare patients does Dr. Stephen Walter Williams see?
CMS counts 404 Medicare patients who saw Dr. Williams in 2024, with an average age of 74.
Show 4 more questionsShow fewer questions
What services does Dr. Stephen Walter Williams bill to Medicare?
In 2024, Dr. Williams' most billed Medicare services were medicare service (G2211), office visit, established patient (99214) and surgery: heart and blood vessels (36415).
What drugs does Dr. Stephen Walter Williams prescribe most?
In 2024 Medicare Part D data, Dr. Williams' most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Lisinopril.
Has Dr. Stephen Walter Williams received payments from drug or device companies?
CMS Open Payments shows $1,665 in general payments to Dr. Williams from 18 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Stephen Walter Williams been practicing?
Dr. Williams graduated from medical school in 1987, 39 years ago.
Selling to family medicine practices?
See family medicine physicians in Arizona by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card