Dr. Roy Jerome Williams Jr., MD
- Industry payments
- $104
- Affiliated sites
- 2
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2005
- Practice address
- 3409 Union Blvd, Saint Louis, MO 63115
- Practice phone
- Call (314) 261-4834
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Williams Clinic
Primary care practice · Saint Louis, Missouri
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. Roy Jerome Williams Jr. is an internist in Saint Louis, Missouri
Dr. Williams practices at Williams Clinic in Saint Louis, Missouri.
Dr. Williams' NPI, 1982604369, was assigned on July 28, 2005. Dr. Williams holds Missouri license R9968.
- NPI
- 1982604369NPI Registry (opens in a new tab)
- NPI enumeration date
- July 28, 2005
- NPI status
- Active
- Practice phone
- (314) 261-4834
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Roy Jerome Williams Jr. practices at 2 locations in Saint Louis, Missouri
Dr. Williams' primary practice is Williams Clinic, at 3409 Union Blvd, Saint Louis, MO 63115. The practice phone is (314) 261-4834. The NPI Registry lists Dr. Williams' practice address as 11133 Dunn Rd, Saint Louis, MO 63136.
- Williams ClinicPrimary3409 Union Blvd, Saint Louis, MO 63115Phone(314) 261-4834
- NPI Registry address11133 Dunn Rd, Saint Louis, MO 63136 · Saint Louis CountyPhone(314) 261-4834
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Roy Jerome Williams Jr. is affiliated with 2 sites of care and 1 medical group
Dr. Williams' primary practice is Williams Clinic in Saint Louis, Missouri. Dmand AI also links Dr. Williams to 1 physician office and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Roy Jerome Williams Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Williams practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Williams Clinic | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Roy Jerome Williams Jr. is one of 2,114 internists in Missouri
Internal medicine is Dr. Williams' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Williams is licensed in Missouri.
Specialties and state licenses
- Internal medicine, MissouriPrimary
Internists near Dr. Williams
Counts of internists 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. Roy Jerome Williams Jr.'s patients have a median age of 72
Across all payers, Dmand AI patient panel data puts Dr. Williams' median patient age at 72, with 52% women.
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 72
Patient panel by sex, all payers
- Women52%
- Men43%
Source: Dmand AI Patient Panel Data
Dr. Roy Jerome Williams Jr. received $104 in industry payments in 2025
CMS Open Payments shows 1 general payment to Dr. Williams from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Radius Health, Inc. paid the most, $104.
Companies that paid Dr. 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 Dr. Roy Jerome Williams 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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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. Roy Jerome Williams 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. Roy Jerome Williams Jr.'s NPI number?
Dr. Roy Jerome Williams Jr.'s NPI number is 1982604369. It was assigned on July 28, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Roy Jerome Williams Jr.?
Dr. Roy Jerome Williams Jr. is an internist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Roy Jerome Williams Jr. practice?
Dr. Williams practices at 3409 Union Blvd, Saint Louis, MO 63115. Dr. Williams also practices at 11133 Dunn Rd, Saint Louis, MO 63136. Dr. Williams' primary practice is Williams Clinic in Saint Louis, Missouri. Dmand AI also links Dr. Williams to 1 physician office and 1 medical group.
What is Dr. Roy Jerome Williams Jr.'s office phone number?
The practice phone on file for Dr. Williams is (314) 261-4834.
What is Dr. Roy Jerome Williams Jr.'s medical license number?
Dr. Williams holds Missouri license R9968.
Has Dr. Roy Jerome Williams Jr. received payments from drug or device companies?
CMS Open Payments shows $104 in general payments to Dr. Williams from 1 company from 2025 to 2025. The largest total came from Radius Health, Inc.
How long has Dr. Roy Jerome Williams Jr. been practicing?
Dr. Williams' NPI was assigned in 2005.
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