Derek Downing, DDS
NPI 1881388924 · Dentist · Winchester, CA
Enrolled with Medicare as Order and Referring Only - Dentist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Derek Downing, DDS is a Dentist provider in Winchester, CA (NPI 1881388924).
Provider details
- NPI number
- 1881388924
- Entity type
- Individual
- Primary specialty
- DentistDental Providers
- Credential
- DDS
- Sex
- Male
- Sole proprietor
- Yes
- License
- 7765 (OK)
Specialties & taxonomies
Dental Providers
Dental Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 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 · 1 distinct drug on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin | 18 | 18 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 309 Nw Sheridan RdLawton, OK 73505-6501Phone: (580) 357-7878
Registry dates
- Enumerated
- 2023-06-02
- Last updated
- 2025-05-02
- Certified
- 2025-05-02
Frequently asked questions
- What is Derek Downing's NPI number?
- Derek Downing's National Provider Identifier (NPI) is 1881388924, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Derek Downing's specialty?
- Derek Downing is listed in the NPPES registry with a primary specialty of Dentist (Dental Providers).
- Where is Derek Downing located?
- Derek Downing's practice location on file with NPPES is 32897 Western Hills Dr Ste 102, Winchester, CA 92596-9331.
- What is Derek Downing's phone number?
- The practice phone number listed in the NPPES registry for Derek Downing is (951) 335-5169.
- Does Derek Downing accept Medicare?
- Derek Downing is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Derek Downing's NPI active?
- Yes — Derek Downing's NPI (1881388924) is active in the NPPES registry as of the last update on 2025-05-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.