David John Williams, PA-C
- Medicare patients, 2024
- 112
- Part D claims, 2024
- 213
- Hospital affiliations
- 5
- Industry payments
- $107
- Medical groups
- 4
- Practice address
- 1840 Amherst St, Winchester, VA 22601
- Practice phone
- Call (540) 536-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find David 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.
David John Williams is a physician assistant in Winchester, Virginia
David Williams practices at Winchester Medical Center in Winchester, Virginia, part of Valley Health.
David Williams' NPI, 1932179488, was assigned on January 26, 2006. David Williams holds Virginia license 0110005510.
- NPI
- 1932179488NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2961569066
- NPI enumeration date
- January 26, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (540) 536-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
David John Williams practices at Winchester Medical Center in Winchester, Virginia
David Williams' primary practice is Winchester Medical Center, at 1840 Amherst St, Winchester, VA 22601 in Winchester City. The practice phone is (540) 536-8000.
- Winchester Medical Center1840 Amherst St, Winchester, VA 22601 · Winchester CityPhone(540) 536-8000
Source: Dmand AI Affiliation Data
David John Williams is affiliated with 8 sites of care and 4 medical groups
David Williams' primary practice is Winchester Medical Center in Winchester, Virginia, part of Valley Health. David Williams is also affiliated with Shenandoah Memorial Hospital. The medical group on file is Valley Health. Dmand AI also links David Williams to 3 more hospitals, 3 medical groups, 2 group practices and clinics and 1 rural health clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at David John Williams' practice
Dmand AI tracks the electronic health record (EHR) system at each site where David Williams practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Winchester Medical Center | Available with a free account |
| +7 more sites and 3 medical groups | 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 Valley Health and 6.2K+ hospitals, with verified contacts in the same login.
David John Williams is one of 3,636 physician assistants in Virginia
Physician assistant is David Williams' primary specialty in the NPI Registry, under taxonomy code 363A00000X. David Williams is licensed in Virginia.
Specialties and state licenses
- Physician assistant, VirginiaPrimary
Physician assistants near David Williams
Counts of physician assistants 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
David John Williams treated 112 Medicare patients in 2024, average age 73
CMS counts 112 Medicare patients who saw David Williams in 2024. The largest group is 65 to 74, with 53 patients. 75% of them have arthritis, and 75% have high blood pressure. Their average risk score is 1.07, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts David Williams' median patient age at 65, with 48% women.
David Williams' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
David Williams' Medicare patients by sex, 2024
- Women6356%
- Men4944%
Chronic conditions among David Williams' Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Diabetes32%
- Anxiety31%
- Mood disorders31%
- Depression30%
- Ischemic heart disease28%
Share of Medicare patients with each condition. A patient can have several.
David Williams' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women48%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
David John Williams wrote 213 Medicare Part D claims in 2024
In 2024, David Williams wrote 213 Medicare Part D claims for 89 patients. 99% of them were for generic drugs.
David Williams' Part D claims by kind of drug, 2024
- Generic210 claims99%
- Brand-name and other3 claims1%
Drug classes CMS tracks in David Williams' Part D claims, 2024
- Opioids49%105 of 213 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How David John Williams takes part in Medicare
David Williams accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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David John Williams received $107 in industry payments in 2025
CMS Open Payments shows 5 general payments to David Williams from 3 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Medtronic, Inc. paid the most, $50.
Companies that paid David Williams the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for David John 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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| 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 (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 David John 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 David John Williams' NPI number?
David John Williams' NPI number is 1932179488. It was assigned on January 26, 2006, and it is active in the NPI Registry.
What does David John Williams specialize in?
David John Williams is a physician assistant in Winchester, Virginia. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does David John Williams practice?
David Williams practices at 1840 Amherst St, Winchester, VA 22601. David Williams' primary practice is Winchester Medical Center in Winchester, Virginia, part of Valley Health. Dmand AI also links David Williams to 3 hospitals, 3 medical groups, 2 group practices and clinics and 1 rural health clinic.
What is David John Williams' office phone number?
The practice phone on file for David Williams is (540) 536-8000.
What is David John Williams' medical license number?
David Williams holds Virginia license 0110005510.
Which hospitals is David John Williams affiliated with?
David Williams practices at Winchester Medical Center in Winchester, Virginia. David Williams is also affiliated with Shenandoah Memorial Hospital. Dmand AI links David Williams to 3 more hospitals.
What medical group is David John Williams part of?
David Williams is linked to Valley Health. Dmand AI links David Williams to 3 more medical groups.
Does David John Williams accept Medicare?
Yes. CMS lists David Williams as accepting Medicare assignment.
How many Medicare patients does David John Williams see?
CMS counts 112 Medicare patients who saw David Williams in 2024, with an average age of 73.
Has David John Williams received payments from drug or device companies?
CMS Open Payments shows $107 in general payments to David Williams from 3 companies from 2025 to 2025. The largest total came from Medtronic, Inc.
How long has David John Williams been practicing?
David Williams graduated from medical school in 2002, 24 years ago.
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