David C. Williams
- Medicare patients, 2026
- 107
- Part D claims, 2026
- 299
- Hospital affiliations
- 1
- Medical groups
- 3
- State license
- 1
- Practice address
- 2101 N Waterman Ave, San Bernardino, CA 92404
- Practice phone
- Call (909) 883-8711
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find David 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.
David C. Williams is a physician assistant in San Bernardino, California
David Williams practices at Dignity Health - St. Bernardine Medical Center in San Bernardino, California, part of CommonSpirit Health.
David Williams' NPI, 1336706530, was assigned on May 22, 2019. David Williams graduated from Loma Linda University School of Medicine in 2019. David Williams holds California license 57409.
- NPI
- 1336706530NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5698109585
- NPI enumeration date
- May 22, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (909) 883-8711
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
David C. Williams practices at Dignity Health - St. Bernardine Medical Center in San Bernardino, California
David Williams' primary practice is Dignity Health - St. Bernardine Medical Center, at 2101 N Waterman Ave, San Bernardino, CA 92404 in San Bernardino County. The practice phone is (909) 883-8711.
- Dignity Health - St. Bernardine Medical Center2101 N Waterman Ave, San Bernardino, CA 92404 · San Bernardino CountyPhone(909) 883-8711
Source: Dmand AI Affiliation Data
David C. Williams is affiliated with 1 site of care and 3 medical groups
David Williams' primary practice is Dignity Health - St. Bernardine Medical Center in San Bernardino, California, part of CommonSpirit Health. The medical group on file is Southern California Emergency Medicine. Dmand AI also links David Williams to 2 more medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at David C. Williams' practice
Dmand AI tracks the electronic health record (EHR) system at each site where David Williams practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dignity Health - St. Bernardine Medical Center | Available with a free account |
| +2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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David C. Williams is one of 11,482 physician assistants in California
Physician assistant is David Williams' primary specialty in the NPI Registry, under taxonomy code 363A00000X. David Williams is licensed in California.
Specialties and state licenses
- Physician assistant, CaliforniaPrimary
Physician assistants near David Williams
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
David C. Williams treated 107 Medicare patients in 2026, average age 67
CMS counts 107 Medicare patients who saw David Williams in 2026. The largest group is 65 to 74, with 50 patients. 67% of them have high blood pressure, and 64% have high cholesterol. 67% are also on Medicaid. Their average risk score is 1.30, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts David Williams' median patient age at 23, with 63% women.
David Williams' Medicare patients by age, 2026
CMS leaves out age groups with fewer than 11 patients.
David Williams' Medicare patients by sex, 2026
- Women6460%
- Men4340%
Chronic conditions among David Williams' Medicare patients, 2026
- High blood pressure67%
- High cholesterol64%
- Arthritis40%
- Diabetes36%
- Mood disorders25%
- Depression22%
- Chronic kidney disease21%
- Anxiety20%
Share of Medicare patients with each condition. A patient can have several.
David Williams' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 23
Patient panel by sex, all payers
- Women63%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2026 data
David C. Williams wrote 299 Medicare Part D claims in 2026
In 2026, David Williams wrote 299 Medicare Part D claims for 222 patients. 92% of them were for generic drugs.
David Williams' Part D claims by kind of drug, 2026
- Generic274 claims92%
- Brand-name25 claims8%
Drug classes CMS tracks in David Williams' Part D claims, 2026
- Antibiotics40%121 of 299 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), 2026 data
How David C. Williams takes part in Medicare
David Williams 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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David C. Williams graduated from Loma Linda University School of Medicine
David Williams graduated from Loma Linda University School of Medicine in 2019.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for David C. 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) |
| 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 David C. 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 David C. Williams' NPI number?
David C. Williams' NPI number is 1336706530. It was assigned on May 22, 2019, and it is active in the NPI Registry.
What does David C. Williams specialize in?
David C. Williams is a physician assistant in San Bernardino, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does David C. Williams practice?
David Williams practices at 2101 N Waterman Ave, San Bernardino, CA 92404. David Williams' primary practice is Dignity Health - St. Bernardine Medical Center in San Bernardino, California, part of CommonSpirit Health. Dmand AI also links David Williams to 2 medical groups, and a free account names each one.
What is David C. Williams' office phone number?
The practice phone on file for David Williams is (909) 883-8711. Dmand AI also checks direct phone and mobile numbers, available with a free account.
What is David C. Williams' email address?
Dmand AI checks professional and personal email addresses for David Williams through healthcare-specific waterfall enrichment. They are available with a free Dmand AI account.
What is David C. Williams' medical license number?
David Williams holds California license 57409, one of 2 state licenses on file.
Which hospitals is David C. Williams affiliated with?
David Williams practices at Dignity Health - St. Bernardine Medical Center in San Bernardino, California.
What medical group is David C. Williams part of?
David Williams is linked to Southern California Emergency Medicine. Dmand AI links David Williams to 2 more medical groups, named with a free account.
Who does David C. Williams practice with?
Dmand AI links 51 HCPs to David Williams' primary medical group, 23 of them physician assistants. A free account lists them, with verified contacts.
Does David C. Williams accept Medicare?
Yes. CMS lists David Williams as accepting Medicare assignment.
Show 4 more questionsShow fewer questions
How many Medicare patients does David C. Williams see?
CMS counts 107 Medicare patients who saw David Williams in 2026, with an average age of 67.
Where did David C. Williams go to medical school?
David Williams graduated from Loma Linda University School of Medicine in 2019.
How long has David C. Williams been practicing?
David Williams graduated from medical school in 2019, 7 years ago.
What EHR does David C. Williams' practice use?
Dmand AI tracks the EHR system at Dignity Health - St. Bernardine Medical Center and at 2 medical groups. The vendor and product are available with a free Dmand AI account.
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