Gray R. Williams, DPM
- Medicare patients, 2024
- 11
- Part D claims, 2024
- 103
- Hospital affiliations
- 1
- Industry payments
- $33
- Medical group
- 1
- Practice address
- 975 Sereno Dr, Vallejo, CA 94589
- Practice phone
- Call (707) 651-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Gray 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.
Gray R. Williams is a podiatrist in Vallejo, California
Gray Williams practices at Vallejo Medical Center in Vallejo, California, part of Kaiser Permanente.
Gray Williams' NPI, 1750455028, was assigned on November 20, 2006. Gray Williams graduated from Barry University School of Podiatric Medicine in 1995. Gray Williams holds California license E4081.
- NPI
- 1750455028NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2860677184
- NPI enumeration date
- November 20, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (707) 651-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 57
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Gray R. Williams practices at Vallejo Medical Center in Vallejo, California
Gray Williams' primary practice is Vallejo Medical Center, at 975 Sereno Dr, Vallejo, CA 94589 in Solano County. The practice phone is (707) 651-1000.
- Vallejo Medical Center975 Sereno Dr, Vallejo, CA 94589 · Solano CountyPhone(707) 651-1000
Source: Dmand AI Affiliation Data
Gray R. Williams is affiliated with 3 sites of care and 1 medical group
Gray Williams' primary practice is Vallejo Medical Center in Vallejo, California, part of Kaiser Permanente. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Gray Williams to 1 more home health agency and 1 hospice, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Gray R. Williams' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Gray Williams practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Vallejo Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Gray R. Williams is one of 745 podiatrists in California
Podiatrist is Gray Williams' primary specialty in the NPI Registry, under taxonomy code 213E00000X. Gray Williams is licensed in California.
Specialties and state licenses
- Podiatrist, CaliforniaPrimary
Podiatrists near Gray Williams
Counts of podiatrists 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
Gray R. Williams treated 11 Medicare patients in 2024, average age 59
CMS counts 11 Medicare patients who saw Gray Williams in 2024. The largest group is 75 to 84, with 0 patients. Their average risk score is 3.57, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Gray Williams' median patient age at 48, with 54% women.
Gray Williams' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Gray Williams' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 48
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Gray R. Williams wrote 103 Medicare Part D claims in 2024
In 2024, Gray Williams wrote 103 Medicare Part D claims for 55 patients. 99% of them were for generic drugs.
Gray Williams' Part D claims by kind of drug, 2024
- Generic102 claims99%
- Brand-name and other1 claims1%
Drug classes CMS tracks in Gray Williams' Part D claims, 2024
- Opioids19%20 of 103 claims
- Antibiotics20%21 of 103 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Gray R. Williams takes part in Medicare
Gray Williams accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Gray R. Williams received $33 in industry payments in 2025
CMS Open Payments shows 1 general payment to Gray Williams from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Evolution Surgical, Inc paid the most, $33.
Companies that paid Gray 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
Gray R. Williams graduated from Barry University School of Podiatric Medicine
Gray Williams graduated from Barry University School of Podiatric Medicine in 1995.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Gray R. 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 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)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 Gray R. 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 Gray R. Williams' NPI number?
Gray R. Williams' NPI number is 1750455028. It was assigned on November 20, 2006, and it is active in the NPI Registry.
What does Gray R. Williams specialize in?
Gray R. Williams is a podiatrist in Vallejo, California. The primary specialty in the NPI Registry is Podiatrist (taxonomy code 213E00000X).
Where does Gray R. Williams practice?
Gray Williams practices at 975 Sereno Dr, Vallejo, CA 94589. Gray Williams' primary practice is Vallejo Medical Center in Vallejo, California, part of Kaiser Permanente. Dmand AI also links Gray Williams to 1 home health agency and 1 hospice.
What is Gray R. Williams' office phone number?
The practice phone on file for Gray Williams is (707) 651-1000.
What is Gray R. Williams' medical license number?
Gray Williams holds California license E4081.
Which hospitals is Gray R. Williams affiliated with?
Gray Williams practices at Vallejo Medical Center in Vallejo, California.
What medical group is Gray R. Williams part of?
Gray Williams is linked to The Permanente Medical Group, Inc.
Does Gray R. Williams accept Medicare?
Yes. CMS lists Gray Williams as accepting Medicare assignment.
How many Medicare patients does Gray R. Williams see?
CMS counts 11 Medicare patients who saw Gray Williams in 2024, with an average age of 59.
Where did Gray R. Williams go to medical school?
Gray Williams graduated from Barry University School of Podiatric Medicine in 1995.
Has Gray R. Williams received payments from drug or device companies?
CMS Open Payments shows $33 in general payments to Gray Williams from 1 company from 2025 to 2025. The largest total came from Evolution Surgical, Inc.
How long has Gray R. Williams been practicing?
Gray Williams graduated from medical school in 1995, 31 years ago.
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