Walter Mills, MD
NPI 1871677948 · Family Medicine Physician · Santa Cruz, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Walter Mills, MD is a Family Medicine Physician provider in Santa Cruz, CA (NPI 1871677948).
Provider details
- NPI number
- 1871677948
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G45945 (CA)
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
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 · 10 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Atorvastatin Calcium | 75 |
| Furosemide | 51 |
| Losartan Potassium | 48 |
| Amlodipine Besylate | 27 |
| Hydrochlorothiazide | 20 |
| Losartan/Hydrochlorothiazidebrand: Losartan-Hydrochlorothiazide | 12 |
| Terazosin Hcl | 12 |
| Famotidine | 11 |
| Empagliflozinbrand: Jardiance | 11 |
Practice location
Mailing address
Additional practice locations (1)
- 401 Bicentennial WaySanta Rosa, CA 95403-2149Phone: (707) 571-4000
Registry dates
- Enumerated
- 2006-10-25
- Last updated
- 2023-10-26
- Certified
- 2023-10-26
Frequently asked questions
- What is Walter Mills's NPI number?
- Walter Mills's National Provider Identifier (NPI) is 1871677948, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Walter Mills's specialty?
- Walter Mills is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Walter Mills located?
- Walter Mills's practice location on file with NPPES is 1510 Capitola Rd, Santa Cruz, CA 95062-2912.
- What is Walter Mills's phone number?
- The practice phone number listed in the NPPES registry for Walter Mills is (831) 427-3500.
- Does Walter Mills accept Medicare?
- Walter Mills is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Walter Mills's NPI active?
- Yes — Walter Mills's NPI (1871677948) is active in the NPPES registry as of the last update on 2023-10-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.