David Sugiyama, M.D.
NPI 1851642771 · Family Medicine Physician · Fontana, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Sugiyama, M.D. is a Family Medicine Physician provider in Fontana, CA (NPI 1851642771).
Provider details
- NPI number
- 1851642771
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 yrs in NPPES registry
- Profile completeness38% of score
83% 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 · 86 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 600 | 222 |
| Amlodipine Besylate | 271 | 100 |
| Losartan Potassium | 211 | 74 |
| Omeprazole | 210 | 90 |
| Lisinopril | 187 | 69 |
| Levothyroxine Sodium | 175 | 61 |
| Terazosin Hcl | 168 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-10-02
- Last updated
- 2021-11-30
- Certified
- 2021-11-30
Frequently asked questions
- What is David Sugiyama's NPI number?
- David Sugiyama's National Provider Identifier (NPI) is 1851642771, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Sugiyama's specialty?
- David Sugiyama is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is David Sugiyama located?
- David Sugiyama's practice location on file with NPPES is 9961 Sierra Ave, Fontana, CA 92335-6720.
- What is David Sugiyama's phone number?
- The practice phone number listed in the NPPES registry for David Sugiyama is (909) 427-5000.
- Does David Sugiyama accept Medicare?
- David Sugiyama is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Sugiyama's NPI active?
- Yes — David Sugiyama's NPI (1851642771) is active in the NPPES registry as of the last update on 2021-11-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.