Dr. William R. De Wolf, MD
- Medicare services, 2024
- 511
- Medicare patients, 2024
- 193
- Part D claims, 2024
- 2,600
- Hospital affiliations
- 2
- Medical group
- 1
- Practice address
- 350 30th St Suite 100 Suite 100, Oakland, CA 94609-3422
- Practice phone
- Call (510) 204-8290
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Sutter East Bay Medical Foundation
Multi-specialty group site · Oakland, California
Find Dr. De Wolf'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 R. De Wolf is an internist in Oakland, California
Dr. De Wolf practices at Sutter East Bay Medical Foundation in Oakland, California.
Dr. De Wolf's NPI, 1538274055, was assigned on August 21, 2006. Dr. De Wolf graduated from University of California, Davis School of Medicine in 1978. Dr. De Wolf holds California license G40902.
- NPI
- 1538274055NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1759338304
- NPI enumeration date
- August 21, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (510) 204-8290
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 74
- Medical school graduation
- 1978
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William R. De Wolf practices at Sutter East Bay Medical Foundation in Oakland, California
Dr. De Wolf's primary practice is Sutter East Bay Medical Foundation, at 350 30th St Suite 100 Suite 100, Oakland, CA 94609-3422. The practice phone is (510) 204-8290.
- Sutter East Bay Medical Foundation350 30th St Suite 100 Suite 100, Oakland, CA 94609-3422Phone(510) 204-8290
Source: Dmand AI Affiliation Data
Dr. William R. De Wolf is affiliated with 3 sites of care and 1 medical group
Dr. De Wolf's primary practice is Sutter East Bay Medical Foundation in Oakland, California. Dr. De Wolf is also affiliated with Alta Bates Summit Medical Center. The medical group on file is Palo Alto Foundation Medical Group. Dmand AI also links Dr. De Wolf to 1 more hospital, named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. William R. De Wolf's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. De Wolf practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sutter East Bay Medical Foundation | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William R. De Wolf is one of 16,751 internists in California
Internal medicine is Dr. De Wolf's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. De Wolf is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. De Wolf
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. William R. De Wolf billed Medicare for 511 services in 2024
CMS data shows 511 Medicare services from Dr. De Wolf across 8 procedure codes in 2024, for 193 Medicare patients. Medicare paid $49,396 for them. Every service was in an office.
Dr. De Wolf's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3792024: 3761%
- Other services
- 2023: 702024: 9434%
- Tests and treatments
- 2023: 172024: 41141%
Dr. De Wolf compared with the California median for internists, 2024
- Dr. De Wolf
- California median
- Medicare services
- 511vs 36142% above
- Medicare patients
- 193vs 15128% above
- Part D claims
- 2,059vs 4214.9 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. De Wolf's most billed Medicare procedure codes, 2024
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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William R. De Wolf treated 193 Medicare patients in 2024, average age 75
CMS counts 193 Medicare patients who saw Dr. De Wolf in 2024. The largest group is 65 to 74, with 82 patients. 68% of them have high cholesterol, and 54% have high blood pressure. 15% are also on Medicaid. Their average risk score is 1.11, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. De Wolf's median patient age at 55, with 42% women.
Dr. De Wolf's Medicare patients by age, 2024
Dr. De Wolf's Medicare patients by sex, 2024
- Women10052%
- Men9348%
Chronic conditions among Dr. De Wolf's Medicare patients, 2024
- High cholesterol68%
- High blood pressure54%
- Arthritis43%
- Anxiety22%
- Diabetes18%
- Mood disorders18%
- Chronic kidney disease16%
- Depression16%
Share of Medicare patients with each condition. A patient can have several.
Dr. De Wolf'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
- Women42%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William R. De Wolf wrote 2,600 Medicare Part D claims in 2024
In 2024, Dr. De Wolf wrote 2,600 Medicare Part D claims for 195 patients. 92% of them were for generic drugs. CMS names the drug for 2,059 of them, across 62 drugs with 11 or more claims each, at $112,195 in total drug cost. In 2023, CMS named 1,848 claims across 55 drugs.
Dr. De Wolf's Part D claims by kind of drug, 2024
- Generic2,386 claims92%
- Brand-name and other214 claims8%
Dr. De Wolf's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. De Wolf's Part D claims, 2024
- Opioids8%195 of 2,600 claims
- Antibiotics1%28 of 2,600 claims
- Antipsychotics, patients 65 and over1%26 of 2,600 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,8482024: 2,05911%
Drugs named by CMS: 62 in 2024, 55 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. William R. De Wolf offers telehealth to Medicare patients
Dr. De Wolf accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. De Wolf as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. William R. De Wolf graduated from University of California, Davis School of Medicine
Dr. De Wolf graduated from University of California, Davis School of Medicine in 1978.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William R. De Wolf'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 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)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 Dr. William R. De Wolf
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 R. De Wolf's NPI number?
Dr. William R. De Wolf's NPI number is 1538274055. It was assigned on August 21, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William R. De Wolf?
Dr. William R. De Wolf is an internist in Oakland, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. William R. De Wolf practice?
Dr. De Wolf practices at 350 30th St Suite 100 Suite 100, Oakland, CA 94609-3422. Dr. De Wolf's primary practice is Sutter East Bay Medical Foundation in Oakland, California. Dmand AI also links Dr. De Wolf to 1 hospital.
What is Dr. William R. De Wolf's office phone number?
The practice phone on file for Dr. De Wolf is (510) 204-8290.
What is Dr. William R. De Wolf's medical license number?
Dr. De Wolf holds California license G40902.
Which hospitals is Dr. William R. De Wolf affiliated with?
Dr. De Wolf is affiliated with Alta Bates Summit Medical Center. Dmand AI links Dr. De Wolf to 1 more hospital.
What medical group is Dr. William R. De Wolf part of?
Dr. De Wolf is linked to Palo Alto Foundation Medical Group.
Does Dr. William R. De Wolf accept Medicare?
Yes. CMS data shows Dr. De Wolf billed Medicare for 511 services in 2024, and Dr. De Wolf accepts Medicare assignment.
Does Dr. William R. De Wolf offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. De Wolf as offering telehealth services.
How many Medicare patients does Dr. William R. De Wolf see?
CMS counts 193 Medicare patients who saw Dr. De Wolf in 2024, with an average age of 75.
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What services does Dr. William R. De Wolf bill to Medicare?
In 2024, Dr. De Wolf's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and medicare service (G0439).
Where did Dr. William R. De Wolf go to medical school?
Dr. De Wolf graduated from University of California, Davis School of Medicine in 1978.
What drugs does Dr. William R. De Wolf prescribe most?
In 2024 Medicare Part D data, Dr. De Wolf's most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Levothyroxine Sodium.
How long has Dr. William R. De Wolf been practicing?
Dr. De Wolf graduated from medical school in 1978, 48 years ago.
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