Dr. William Patrick Clark Jr., MD
- Medicare services, 2016
- 1,564
- Part D claims, 2016
- 199
- Industry payments
- $1,473
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 1250 E Marshall St, Richmond, VA 23298
- Practice phone
- Call (757) 436-2995
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Clark's 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. William Patrick Clark Jr. is a hematologist and oncologist in Richmond, Virginia
Dr. Clark practices in Richmond, Virginia.
Dr. Clark's NPI, 1487619656, was assigned on April 19, 2006. Dr. Clark holds Virginia license 0101036704.
- NPI
- 1487619656NPI Registry (opens in a new tab)
- NPI enumeration date
- April 19, 2006
- NPI status
- Active
- Practice phone
- (757) 436-2995
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. William Patrick Clark Jr.'s practice address is in Richmond, Virginia
Dr. Clark's practice address in the NPI Registry is 1250 E Marshall St, Richmond, VA 23298, in Richmond City. The practice phone is (757) 436-2995.
- NPI Registry address1250 E Marshall St, Richmond, VA 23298 · Richmond CityPhone(757) 436-2995
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. William Patrick Clark Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Clark practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Clark's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William Patrick Clark Jr. is one of 297 hematologists and oncologists in Virginia
Hematology and oncology is Dr. Clark's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Clark is licensed in Virginia.
Specialties and state licenses
- Hematology and oncology, VirginiaPrimary
Hematologists and oncologists near Dr. Clark
Counts of hematologists and oncologists 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. William Patrick Clark Jr. billed Medicare for 1,564 services in 2016
CMS data shows 1,564 Medicare services from Dr. Clark across 7 procedure codes in 2016. Medicare paid $44,101 for them.
Dr. Clark's Medicare services by type, 2016
- Lab and pathology633
- Office and hospital visits557
- Surgery374
Where Dr. Clark's Medicare services took place, 2016
- In an office1,51597%
- In a facility493%
Dr. Clark compared with the Virginia median for hematologists and oncologists, 2016
- Dr. Clark
- Virginia median
- Medicare services
- 1,564vs 3,51455% below
- Part D claims
- 199vs 45256% below
Medians across 275 hematologists and oncologists in Virginia with Dmand AI profiles that report each measure.
Dr. Clark's most billed Medicare procedure codes, 2016
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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Clark and other hematologists and oncologists in Virginia.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William Patrick Clark Jr.'s patients have a median age of 55
Across all payers, Dmand AI patient panel data puts Dr. Clark's median patient age at 55, with 100% women.
Dr. Clark's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 55
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. William Patrick Clark Jr. wrote 199 Medicare Part D claims in 2016
In 2016, Dr. Clark wrote 199 Medicare Part D claims. They cover 11 drugs, with $268,554 in total drug cost.
Dr. Clark's most prescribed drugs by claims, 2016
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. William Patrick Clark Jr. received $1,473 in industry payments from 2016 to 2025
CMS Open Payments shows 85 general payments to Dr. Clark from 23 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 92% of the total. Kite Pharma, Inc. paid the most, $199.
General payments to Dr. Clark by program year, 2016 to 2025
General payments to Dr. Clark by kind, 2016 to 2025
- Food and beverage$1,35092%
- Education$1238%
Companies that paid Dr. Clark 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. William Patrick Clark Jr.'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 |
| 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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. William Patrick Clark Jr.
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. William Patrick Clark Jr.'s NPI number?
Dr. William Patrick Clark Jr.'s NPI number is 1487619656. It was assigned on April 19, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William Patrick Clark Jr.?
Dr. William Patrick Clark Jr. is a hematologist and oncologist in Richmond, Virginia. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. William Patrick Clark Jr. practice?
Dr. Clark practices at 1250 E Marshall St, Richmond, VA 23298.
What is Dr. William Patrick Clark Jr.'s office phone number?
The practice phone on file for Dr. Clark is (757) 436-2995.
What is Dr. William Patrick Clark Jr.'s medical license number?
Dr. Clark holds Virginia license 0101036704.
Does Dr. William Patrick Clark Jr. accept Medicare?
Yes. CMS data shows Dr. Clark billed Medicare for 1,564 services in 2016.
What services does Dr. William Patrick Clark Jr. bill to Medicare?
In 2016, Dr. Clark's most billed Medicare services were lab and pathology test (85025), surgery: heart and blood vessels (36415) and office visit, established patient (99214).
What drugs does Dr. William Patrick Clark Jr. prescribe most?
In 2016 Medicare Part D data, Dr. Clark's most prescribed drugs by claims were Hydrocodone-Acetaminophen, Gleevec and Oxycodone-Acetaminophen.
Has Dr. William Patrick Clark Jr. received payments from drug or device companies?
CMS Open Payments shows $1,473 in general payments to Dr. Clark from 23 companies from 2016 to 2025. The largest total came from Kite Pharma, Inc.
How long has Dr. William Patrick Clark Jr. been practicing?
Dr. Clark's NPI was assigned in 2006.
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