David C. Williams, PA
- Medicare services, 2024
- 393
- Medicare patients, 2024
- 283
- Part D claims, 2024
- 438
- Hospital affiliations
- 2
- Medical groups
- 7
- Practice address
- 10 Healthy Way, Ellenville, NY 12428
- Practice phone
- Call (845) 647-6400
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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David C. Williams is a physician assistant in Ellenville, New York
David Williams practices at Ellenville Regional Hospital in Ellenville, New York, part of Ellenville Regional Hospital.
David Williams' NPI, 1114002045, was assigned on October 26, 2006. David Williams holds New York license 003842.
- NPI
- 1114002045NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9739164591
- NPI enumeration date
- October 26, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (845) 647-6400
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 63
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
David C. Williams practices at Ellenville Regional Hospital in Ellenville, New York
David Williams' primary practice is Ellenville Regional Hospital, at 10 Healthy Way, Ellenville, NY 12428 in Ulster County. The practice phone is (845) 647-6400.
- Ellenville Regional Hospital10 Healthy Way, Ellenville, NY 12428 · Ulster CountyPhone(845) 647-6400
Source: Dmand AI Affiliation Data
David C. Williams is affiliated with 2 sites of care and 7 medical groups
David Williams' primary practice is Ellenville Regional Hospital in Ellenville, New York, part of Ellenville Regional Hospital. David Williams is also affiliated with Columbia Memorial Health. The medical group on file is Ellenville Emergency Medical Associates. Dmand AI also links David Williams to 6 more medical groups, 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 C. Williams' practice
Dmand AI tracks the electronic health record (EHR) system at each site where David Williams practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ellenville Regional Hospital | Available with a free account |
| +1 more site and 6 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 Ellenville Regional Hospital and 6.2K+ hospitals, with verified contacts in the same login.
David C. Williams is one of 11,456 physician assistants in New York
Physician assistant is David Williams' primary specialty in the NPI Registry, under taxonomy code 363A00000X. David Williams is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA). David Williams is licensed in New York.
Specialties and state licenses
- Physician assistant, New YorkPrimary
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 C. Williams billed Medicare for 393 services in 2024
CMS data shows 393 Medicare services from David Williams across 4 procedure codes in 2024, for 283 Medicare patients. Medicare paid $28,260 for them. Every service was in a facility, such as a hospital, rather than an office.
David Williams' Medicare services by type, 2024
- Office and hospital visits330
- Tests and treatments63
David Williams compared with the New York median for physician assistants, 2024
- David Williams
- New York median
- Medicare services
- 393vs 1762.2 times
- Medicare patients
- 283vs 783.6 times
- Part D claims
- 274vs 24512% above
Medians across 6,477 physician assistants in New York with Dmand AI profiles that report each measure.
David 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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
David C. Williams treated 283 Medicare patients in 2024, average age 73
CMS counts 283 Medicare patients who saw David Williams in 2024. The largest group is 75 to 84, with 107 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 34% are also on Medicaid. Their average risk score is 1.46, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts David Williams' median patient age at 43, with 56% women.
David Williams' Medicare patients by age, 2024
David Williams' Medicare patients by sex, 2024
- Women15354%
- Men13046%
Chronic conditions among David Williams' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis45%
- Ischemic heart disease37%
- Diabetes33%
- Anxiety31%
- Mood disorders28%
- Atrial fibrillation27%
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 43
Patient panel by sex, all payers
- Women56%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
David C. Williams wrote 438 Medicare Part D claims in 2024
In 2024, David Williams wrote 438 Medicare Part D claims for 242 patients. 86% of them were for generic drugs. CMS names the drug for 274 of them, across 14 drugs with 11 or more claims each, at $11,428 in total drug cost.
David Williams' Part D claims by kind of drug, 2024
- Generic376 claims86%
- Brand-name and other62 claims14%
David 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 David Williams' Part D claims, 2024
- Opioids6%26 of 438 claims
- Antibiotics29%128 of 438 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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
How David C. 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 C. Williams is board certified in certified physician assistant
- Board certified in certified physician assistant
Source: Dmand AI Professional Profile Data
Sources for David C. 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 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) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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 C. 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 C. Williams' NPI number?
David C. Williams' NPI number is 1114002045. It was assigned on October 26, 2006, and it is active in the NPI Registry.
What does David C. Williams specialize in?
David C. Williams is a physician assistant in Ellenville, New York. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does David C. Williams practice?
David Williams practices at 10 Healthy Way, Ellenville, NY 12428. David Williams' primary practice is Ellenville Regional Hospital in Ellenville, New York, part of Ellenville Regional Hospital. Dmand AI also links David Williams to 6 medical groups.
What is David C. Williams' office phone number?
The practice phone on file for David Williams is (845) 647-6400.
What is David C. Williams' medical license number?
David Williams holds New York license 003842.
Which hospitals is David C. Williams affiliated with?
David Williams practices at Ellenville Regional Hospital in Ellenville, New York. David Williams is also affiliated with Columbia Memorial Health.
What medical group is David C. Williams part of?
David Williams is linked to Ellenville Emergency Medical Associates. Dmand AI links David Williams to 6 more medical groups.
Does David C. Williams accept Medicare?
Yes. CMS data shows David Williams billed Medicare for 393 services in 2024, and David Williams accepts Medicare assignment.
How many Medicare patients does David C. Williams see?
CMS counts 283 Medicare patients who saw David Williams in 2024, with an average age of 73.
Is David C. Williams board certified?
Yes. David Williams is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA).
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What services does David C. Williams bill to Medicare?
In 2024, David Williams' most billed Medicare services were emergency department visit (99284), emergency department visit (99285) and heart test or procedure (93010).
What drugs does David C. Williams prescribe most?
In 2024 Medicare Part D data, David Williams' most prescribed drugs by claims were Prednisone, Azithromycin and Tizanidine HCl.
How long has David C. Williams been practicing?
David Williams graduated from medical school in 1989, 37 years ago.
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