David Witkin, M.D.
NPI 1649289810 · Internal Medicine Physician · Eugene, OR
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Witkin, M.D. is a Internal Medicine Physician provider in Eugene, OR (NPI 1649289810).
Provider details
- NPI number
- 1649289810
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD61116304 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 125 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 533 | 170 |
| Lisinopril | 241 | 82 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 237 | 45 |
| Tamsulosin Hcl | 174 | 58 |
| Levothyroxine Sodium | 169 | 52 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 167 | 60 |
Practice location
Mailing address
Additional practice locations (1)
- 1755 Coburg RdBuilding 1, Suite 4Eugene, OR 97401-4982Phone: (541) 683-2888Fax: (541) 683-3289
Registry dates
- Enumerated
- 2006-08-05
- Last updated
- 2026-05-11
- Certified
- 2026-05-11
Frequently asked questions
- What is David Witkin's NPI number?
- David Witkin's National Provider Identifier (NPI) is 1649289810, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Witkin's specialty?
- David Witkin is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is David Witkin located?
- David Witkin's practice location on file with NPPES is 360 S Garden Way Ste 100, Eugene, OR 97401-8173.
- What is David Witkin's phone number?
- The practice phone number listed in the NPPES registry for David Witkin is (800) 813-2000.
- Does David Witkin accept Medicare?
- David Witkin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Witkin's NPI active?
- Yes — David Witkin's NPI (1649289810) is active in the NPPES registry as of the last update on 2026-05-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.