David Whitaker, D.O.
NPI 1255331203 · Emergency Medicine Physician · Fontana, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Whitaker, D.O. is a Emergency Medicine Physician provider in Fontana, CA (NPI 1255331203).
Provider details
- NPI number
- 1255331203
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- DR.0075037 (CO)
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
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cefadroxil | 69 | 69 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 34 | 34 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 27 | 27 |
| Prednisone | 22 | 22 |
| Ondansetronbrand: Ondansetron Odt | 18 | 18 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 17 | 17 |
Practice location
Mailing address
Additional practice locations (2)
- 10350 E Dakota AveDenver, CO 80247-1314Phone: (303) 338-4545
- 201 16th Ave ESeattle, WA 98112-5226Phone: (206) 326-3000Fax: (877) 515-2975
Registry dates
- Enumerated
- 2005-07-29
- Last updated
- 2025-05-29
- Certified
- 2025-05-29
Frequently asked questions
- What is David Whitaker's NPI number?
- David Whitaker's National Provider Identifier (NPI) is 1255331203, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Whitaker's specialty?
- David Whitaker is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is David Whitaker located?
- David Whitaker's practice location on file with NPPES is 9961 Sierra Ave, Fontana, CA 92335-6720.
- What is David Whitaker's phone number?
- The practice phone number listed in the NPPES registry for David Whitaker is (909) 427-5000.
- Does David Whitaker accept Medicare?
- David Whitaker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Whitaker's NPI active?
- Yes — David Whitaker's NPI (1255331203) is active in the NPPES registry as of the last update on 2025-05-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.