Walter Williams, M.D.
NPI 1225099351 · Family Medicine Physician · Corvallis, OR
Enrolled with Medicare as Order and Referring Only - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Walter Williams, M.D. is a Family Medicine Physician provider in Corvallis, OR (NPI 1225099351).
Provider details
- NPI number
- 1225099351
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD24142 (OR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 · 82 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 328 | 83 |
| Gabapentin | 155 | 33 |
| Lisinopril | 128 | 37 |
| Amlodipine Besylate | 123 | 38 |
| Levothyroxine Sodium | 112 | 23 |
| Metoprolol Succinate | 107 | 21 |
| Omeprazole |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-29
- Last updated
- 2012-02-10
Frequently asked questions
- What is Walter Williams's NPI number?
- Walter Williams's National Provider Identifier (NPI) is 1225099351, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Walter Williams's specialty?
- Walter Williams is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Walter Williams located?
- Walter Williams's practice location on file with NPPES is 530 Nw 27th St, Corvallis, OR 97330-5223.
- What is Walter Williams's phone number?
- The practice phone number listed in the NPPES registry for Walter Williams is (541) 766-6835.
- Does Walter Williams accept Medicare?
- Walter Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Walter Williams's NPI active?
- Yes — Walter Williams's NPI (1225099351) is active in the NPPES registry as of the last update on 2012-02-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.