Dr. John P. Williams, MD
- Medicare services, 2024
- 566
- Medicare patients, 2026
- 309
- Part D claims, 2026
- 16
- MIPS score, 2026
- 75
- Hospital affiliations
- 3
- Practice address
- 24805 Pinebrook Rd, Chantilly, VA 20152
- Practice phone
- Call (703) 327-0955
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Dulles Orofacial Surgery
Chantilly, Virginia
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. John P. Williams is a general surgeon in Chantilly, Virginia
Dr. Williams practices at Dulles Orofacial Surgery in Chantilly, Virginia.
Dr. Williams' NPI, 1104837244, was assigned on August 11, 2006. Dr. Williams graduated from University of North Carolina at Chapel Hill School of Medicine in 1992. Dr. Williams holds Virginia license 0101059106.
- NPI
- 1104837244NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9537187331
- NPI enumeration date
- August 11, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (703) 327-0955
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John P. Williams practices at Dulles Orofacial Surgery in Chantilly, Virginia
Dr. Williams' primary practice is Dulles Orofacial Surgery, at 24805 Pinebrook Rd, Chantilly, VA 20152 in Loudoun County. The practice phone is (703) 327-0955.
- Dulles Orofacial Surgery24805 Pinebrook Rd, Chantilly, VA 20152 · Loudoun CountyPhone(703) 327-0955
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John P. Williams is affiliated with 6 sites of care and 2 medical groups
Dr. Williams' primary practice is Dulles Orofacial Surgery in Chantilly, Virginia. Dr. Williams is also affiliated with UVA Health Prince William Medical Center. The medical group on file is Galaria Plastic Surgery & Dermatology. Dmand AI also links Dr. Williams to 2 more hospitals, 2 group practices and clinics and 1 medical group, 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. John P. Williams' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Williams practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dulles Orofacial Surgery | Available with a free account |
| +5 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John P. Williams is one of 739 general surgeons in Virginia
Surgery is Dr. Williams' primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Williams is licensed in Virginia.
Specialties and state licenses
- Surgery, VirginiaPrimary
General surgeons near Dr. Williams
Counts of general surgeons 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. John P. Williams billed Medicare for 566 services in 2024
CMS data shows 566 Medicare services from Dr. Williams across 11 procedure codes in 2024, for 309 Medicare patients. Medicare paid $73,317 for them.
Dr. Williams' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3442024: 38412%
- Surgery
- 2023: 1262024: 10219%
- Imaging
- 2023: 922024: 8013%
Where Dr. Williams' Medicare services took place, 2024
- In an office48385%
- In a facility8315%
Dr. Williams compared with the Virginia median for general surgeons, 2024
- Dr. Williams
- Virginia median
- Medicare services
- 566vs 1903.0 times
- Medicare patients
- 309vs 1442.1 times
- Part D claims
- 17vs 3450% below
Medians across 667 general surgeons in Virginia 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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John P. Williams treated 309 Medicare patients in 2026, average age 75
CMS counts 309 Medicare patients who saw Dr. Williams in 2026. The largest group is 75 to 84, with 140 patients. 75% of them have cancer, and 75% have high cholesterol. Their average risk score is 0.91, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Williams' median patient age at 65, with 97% women.
Dr. Williams' Medicare patients by age, 2026
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Williams' Medicare patients, 2026
- Cancer75%
- High cholesterol75%
- High blood pressure69%
- Arthritis40%
- Diabetes24%
- Osteoporosis20%
- Anxiety18%
- Mood disorders17%
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 65
Patient panel by sex, all payers
- Women97%
- Men2%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2026 data
Dr. John P. Williams wrote 16 Medicare Part D claims in 2026
In 2026, Dr. Williams wrote 16 Medicare Part D claims for 11 patients. 100% of them were for generic drugs. They cover 1 drug, with $108 in total drug cost. In 2021, CMS named 29 claims across 1 drug.
Dr. Williams' most prescribed drugs by claims, 2022
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 292022: 1741%
Drugs named by CMS: 1 in 2022, 1 in 2021.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2026 data
Dr. John P. Williams scored 75 out of 100 in Medicare's MIPS program for 2026
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Williams for performance year 2026, reported as part of a group. Dr. Williams accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 21 procedures of mastectomy by Dr. Williams, more than 79% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- MIPS final score, 2026
- 75 of 100
Where Dr. Williams ranks in Medicare procedure volume
- Mastectomy
- 79th percentile21 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2026 data; and Doctors and Clinicians Utilization Data (CMS)
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Dr. John P. Williams received $1,048 in industry payments from 2016 to 2025
CMS Open Payments shows 33 general payments to Dr. Williams from 14 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Genentech, Inc. paid the most, $457.
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
Dr. John P. Williams graduated from University of North Carolina at Chapel Hill School of Medicine
Dr. Williams graduated from University of North Carolina at Chapel Hill School of Medicine in 1992.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John P. 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (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 Dr. John P. 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. John P. Williams' NPI number?
Dr. John P. Williams' NPI number is 1104837244. It was assigned on August 11, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John P. Williams?
Dr. John P. Williams is a general surgeon in Chantilly, Virginia. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. John P. Williams practice?
Dr. Williams practices at 24805 Pinebrook Rd, Chantilly, VA 20152. Dr. Williams' primary practice is Dulles Orofacial Surgery in Chantilly, Virginia. Dmand AI also links Dr. Williams to 2 hospitals, 2 group practices and clinics and 1 medical group, and a free account names each one.
What is Dr. John P. Williams' office phone number?
The practice phone on file for Dr. Williams is (703) 327-0955. Dmand AI also checks direct phone and mobile numbers, available with a free account.
What is Dr. John P. Williams' email address?
Dmand AI checks professional and personal email addresses for Dr. Williams through healthcare-specific waterfall enrichment. They are available with a free Dmand AI account.
What is Dr. John P. Williams' medical license number?
Dr. Williams holds Virginia license 0101059106.
Which hospitals is Dr. John P. Williams affiliated with?
Dr. Williams is affiliated with UVA Health Prince William Medical Center. Dmand AI links Dr. Williams to 2 more hospitals, named with a free account.
What medical group is Dr. John P. Williams part of?
Dr. Williams is linked to Galaria Plastic Surgery & Dermatology. Dmand AI links Dr. Williams to 1 more medical group, named with a free account.
Who does Dr. John P. Williams practice with?
Dmand AI links 6 HCPs to Dr. Williams' primary medical group, 1 of them general surgeon. A free account lists them, with verified contacts.
Does Dr. John P. Williams accept Medicare?
Yes. CMS data shows Dr. Williams billed Medicare for 566 services in 2024, and Dr. Williams accepts Medicare assignment.
Show 8 more questionsShow fewer questions
What is Dr. John P. Williams' MIPS score?
Dr. Williams' MIPS final score for performance year 2026 is 75 out of 100, reported as part of a group.
How many Medicare patients does Dr. John P. Williams see?
CMS counts 309 Medicare patients who saw Dr. Williams in 2026, with an average age of 75.
What services does Dr. John P. Williams bill to Medicare?
In 2024, Dr. Williams' most billed Medicare services were office visit, established patient (99214), office visit, established patient (99215) and ultrasound (76641).
Where did Dr. John P. Williams go to medical school?
Dr. Williams graduated from University of North Carolina at Chapel Hill School of Medicine in 1992.
What drugs does Dr. John P. Williams prescribe most?
In 2022 Medicare Part D data, Dr. Williams' most prescribed drugs by claims were Hydrocodone-Acetaminophen.
Has Dr. John P. Williams received payments from drug or device companies?
CMS Open Payments shows $1,048 in general payments to Dr. Williams from 14 companies from 2016 to 2025. The largest total came from Genentech, Inc.
How long has Dr. John P. Williams been practicing?
Dr. Williams graduated from medical school in 1992, 34 years ago.
What EHR does Dr. John P. Williams' practice use?
Dmand AI tracks the EHR system at Dulles Orofacial Surgery and at 5 more sites and 1 medical group. The vendor and product are available with a free Dmand AI account.
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