Dr. David Bruce Witkin, MD
- Medicare services, 2023
- 24
- Part D claims, 2024
- 6,617
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 500 NE Multnomah St, Portland, OR 97232
- Practice phone
- Call (503) 813-2440
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kaiser Foundation Health Plan of the Northwest
Portland, Oregon
Find Dr. Witkin's professional email, personal email and mobile number
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Dr. David Bruce Witkin is an internist in Portland, Oregon
Dr. Witkin practices at Kaiser Foundation Health Plan of the Northwest in Portland, Oregon.
Dr. Witkin's NPI, 1649289810, was assigned on August 5, 2006. Dr. Witkin holds Oregon license MD 13391.
- NPI
- 1649289810NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9638068570
- NPI enumeration date
- August 5, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (503) 813-2440
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 75
- Medical school graduation
- 1977
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David Bruce Witkin practices at Kaiser Foundation Health Plan of the Northwest in Portland, Oregon
Dr. Witkin's primary practice is Kaiser Foundation Health Plan of the Northwest, at 500 NE Multnomah St, Portland, OR 97232 in Multnomah County. The practice phone is (503) 813-2440.
- Kaiser Foundation Health Plan of the Northwest500 NE Multnomah St, Portland, OR 97232 · Multnomah CountyPhone(503) 813-2440
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. David Bruce Witkin is affiliated with 2 sites of care and 1 medical group
Dr. Witkin's primary practice is Kaiser Foundation Health Plan of the Northwest in Portland, Oregon. The medical group on file is Kaiser Permanente Northwest. Dmand AI also links Dr. Witkin to 1 more group practice or clinic, 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 Dr. David Bruce Witkin's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Witkin practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Foundation Health Plan of the Northwest | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David Bruce Witkin is one of 1,680 internists in Oregon
Internal medicine is Dr. Witkin's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Witkin is licensed in Oregon.
Specialties and state licenses
- Internal medicine, OregonPrimary
Internists near Dr. Witkin
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. David Bruce Witkin billed Medicare for 24 services in 2023
CMS data shows 24 Medicare services from Dr. Witkin across 1 procedure code in 2023, all of them office visits. Medicare paid $841 for them. Every service was in an office.
Dr. Witkin's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 332023: 2427%
Dr. Witkin compared with the Oregon median for internists, 2023
- Dr. Witkin
- Oregon median
- Medicare services
- 24vs 30092% below
- Part D claims
- 6,002vs 22227.0 times
Medians across 1,791 internists in Oregon with Dmand AI profiles that report each measure.
Dr. Witkin's most billed Medicare procedure codes, 2023
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. David Bruce Witkin's patients have a median age of 64
Across all payers, Dmand AI patient panel data puts Dr. Witkin's median patient age at 64, with 34% women.
Dr. Witkin's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women34%
- Men65%
Source: Dmand AI Patient Panel Data
Dr. David Bruce Witkin wrote 6,617 Medicare Part D claims in 2024
In 2024, Dr. Witkin wrote 6,617 Medicare Part D claims for 478 patients. 89% of them were for generic drugs. CMS names the drug for 6,002 of them, across 125 drugs with 11 or more claims each, at $291,163 in total drug cost. In 2023, CMS named 5,547 claims across 112 drugs.
Dr. Witkin's Part D claims by kind of drug, 2024
- Generic5,886 claims89%
- Brand-name676 claims10%
- Other55 claims1%
Dr. Witkin'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. Witkin's Part D claims, 2024
- Opioids8%561 of 6,617 claims
- Antibiotics1%98 of 6,617 claims
- Antipsychotics, patients 65 and over0%30 of 6,617 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: 5,5472024: 6,0028%
Drugs named by CMS: 125 in 2024, 112 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. David Bruce Witkin offers telehealth to Medicare patients
Dr. Witkin accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Witkin as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Sources for Dr. David Bruce Witkin'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 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 Data |
| 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) |
| 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. David Bruce Witkin
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What is Dr. David Bruce Witkin's NPI number?
Dr. David Bruce Witkin's NPI number is 1649289810. It was assigned on August 5, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. David Bruce Witkin?
Dr. David Bruce Witkin is an internist in Portland, Oregon. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. David Bruce Witkin practice?
Dr. Witkin practices at 500 NE Multnomah St, Portland, OR 97232. Dr. Witkin's primary practice is Kaiser Foundation Health Plan of the Northwest in Portland, Oregon. Dmand AI also links Dr. Witkin to 1 group practice or clinic.
What is Dr. David Bruce Witkin's office phone number?
The practice phone on file for Dr. Witkin is (503) 813-2440.
What is Dr. David Bruce Witkin's medical license number?
Dr. Witkin holds Oregon license MD 13391.
What medical group is Dr. David Bruce Witkin part of?
Dr. Witkin is linked to Kaiser Permanente Northwest.
Does Dr. David Bruce Witkin accept Medicare?
Yes. CMS data shows Dr. Witkin billed Medicare for 24 services in 2023, and Dr. Witkin accepts Medicare assignment.
Does Dr. David Bruce Witkin offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Witkin as offering telehealth services.
What services does Dr. David Bruce Witkin bill to Medicare?
In 2023, Dr. Witkin's most billed Medicare services were office visit, established patient (99212).
What drugs does Dr. David Bruce Witkin prescribe most?
In 2024 Medicare Part D data, Dr. Witkin's most prescribed drugs by claims were Atorvastatin Calcium, Lisinopril and Hydrocodone-Acetaminophen.
How long has Dr. David Bruce Witkin been practicing?
Dr. Witkin graduated from medical school in 1977, 49 years ago.
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