William C. Warren, PA-C
- Medicare patients, 2024
- 350
- Part D claims, 2024
- 409
- Hospital affiliations
- 5
- Industry payments
- $222
- Medical group
- 1
- Practice address
- 6602 W Broad St, Richmond, VA 23230
- Practice phone
- Call (804) 285-4465
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Gastrointestinal Specialists
Richmond, Virginia
Find William Warren'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.
William C. Warren is a physician assistant in Richmond, Virginia
William Warren practices at Gastrointestinal Specialists in Richmond, Virginia.
William Warren's NPI, 1487915716, was assigned on June 4, 2012. William Warren graduated from Eastern Virginia Medical School in 2012. William Warren holds Virginia license 0110003894.
- NPI
- 1487915716NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4486810629
- NPI enumeration date
- June 4, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (804) 285-4465
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
William C. Warren practices at Gastrointestinal Specialists in Richmond, Virginia
William Warren's primary practice is Gastrointestinal Specialists, at 6602 W Broad St, Richmond, VA 23230 in Henrico County. The practice phone is (804) 285-4465.
- Gastrointestinal Specialists6602 W Broad St, Richmond, VA 23230 · Henrico CountyPhone(804) 285-4465
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
William C. Warren is affiliated with 7 sites of care and 1 medical group
William Warren's primary practice is Gastrointestinal Specialists in Richmond, Virginia. William Warren is also affiliated with Bon Secours St. Mary's Hospital. The medical group on file is Gastrointestinal Specialists, Inc. Dmand AI also links William Warren to 4 more hospitals and 1 group practice or clinic, 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 William C. Warren's practice
Dmand AI tracks the electronic health record (EHR) system at each site where William Warren practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Gastrointestinal Specialists | Available with a free account |
| +6 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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William C. Warren is one of 759 physician assistants in Virginia
Medical is William Warren's primary specialty in the NPI Registry, under taxonomy code 363AM0700X. William Warren is licensed in Virginia.
Specialties and state licenses
- Medical physician assistant, VirginiaPrimary
Physician assistants near William Warren
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
William C. Warren treated 350 Medicare patients in 2024, average age 76
CMS counts 350 Medicare patients who saw William Warren in 2024. The largest group is 65 to 74, with 145 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 6% are also on Medicaid. Their average risk score is 1.31, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts William Warren's median patient age at 63, with 58% women.
William Warren's Medicare patients by age, 2024
William Warren's Medicare patients by sex, 2024
- Women22063%
- Men13037%
Chronic conditions among William Warren's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Ischemic heart disease36%
- Mood disorders33%
- Anxiety31%
- Depression30%
- Diabetes27%
Share of Medicare patients with each condition. A patient can have several.
William Warren's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women58%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
William C. Warren wrote 409 Medicare Part D claims in 2024
In 2024, William Warren wrote 409 Medicare Part D claims for 179 patients. 72% of them were for generic drugs.
William Warren's Part D claims by kind of drug, 2024
- Generic293 claims72%
- Brand-name and other116 claims28%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How William C. Warren takes part in Medicare
William Warren 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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William C. Warren received $222 in industry payments in 2025
CMS Open Payments shows 10 general payments to William Warren from 6 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $84.
Companies that paid William Warren the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
William C. Warren graduated from Eastern Virginia Medical School
William Warren graduated from Eastern Virginia Medical School in 2012.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for William C. Warren'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 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) |
| 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 William C. Warren
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is William C. Warren's NPI number?
William C. Warren's NPI number is 1487915716. It was assigned on June 4, 2012, and it is active in the NPI Registry.
What does William C. Warren specialize in?
William C. Warren is a physician assistant in Richmond, Virginia. The primary specialty in the NPI Registry is Medical Physician Assistant (taxonomy code 363AM0700X).
Where does William C. Warren practice?
William Warren practices at 6602 W Broad St, Richmond, VA 23230. William Warren's primary practice is Gastrointestinal Specialists in Richmond, Virginia. Dmand AI also links William Warren to 4 hospitals and 1 group practice or clinic.
What is William C. Warren's office phone number?
The practice phone on file for William Warren is (804) 285-4465.
What is William C. Warren's medical license number?
William Warren holds Virginia license 0110003894.
Which hospitals is William C. Warren affiliated with?
William Warren is affiliated with Bon Secours St. Mary's Hospital. Dmand AI links William Warren to 4 more hospitals.
What medical group is William C. Warren part of?
William Warren is linked to Gastrointestinal Specialists, Inc.
Does William C. Warren accept Medicare?
Yes. CMS lists William Warren as accepting Medicare assignment.
How many Medicare patients does William C. Warren see?
CMS counts 350 Medicare patients who saw William Warren in 2024, with an average age of 76.
Where did William C. Warren go to medical school?
William Warren graduated from Eastern Virginia Medical School in 2012.
Has William C. Warren received payments from drug or device companies?
CMS Open Payments shows $222 in general payments to William Warren from 6 companies from 2025 to 2025. The largest total came from Abbvie Inc.
How long has William C. Warren been practicing?
William Warren graduated from medical school in 2012, 14 years ago.
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