NPPES file of Aug 9, 2026

David Kuzo Sugiyama, M.D.

Family Medicine Physician · Fontana, CA

David Kuzo Sugiyama, M.D. is a family medicine physician with a practice address in Fontana, California, and NPI 1851642771, issued on Oct 2, 2012. Check the license (California A130684, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1851642771
Name
David Kuzo Sugiyama
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
A130684 CA
Self-reported in NPPES; status is on the state search
Practice location
9961 Sierra Ave, Fontana, CA 92335
Phone
(909) 427-5000
Enumerated
Oct 2, 2012
Record last updated
Nov 30, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20160914001805); accepts Medicare assignment
Medical or professional school
Loma Linda University School Of Medicine, 2012
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →

Also registered at 9961 Sierra Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Solomon Abila, MDFamily Medicine Physician1871652479
  2. Jenny Abouelsood, M.D.Family Medicine Physician1457638512
  3. Marla Abrolat, MDPediatrics Physician1164593133
  4. Eduardo Acosta, MDPediatrics Physician1497803324
  5. Michael Adair, MDFamily Medicine Physician1780732651
  6. Berneva Adams, MDObstetrics & Gynecology Physician1376602987

Verify David Kuzo Sugiyama in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A130684    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

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61% more Medicare Part D claims than the average family medicine physician in 2024

5,691 Medicare Part D claims for 631 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 168 claims were for opioids.

  1. David Sugiyama5,691
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium600 claims
  2. Amlodipine Besylate271 claims
  3. Losartan Potassium211 claims
  4. Omeprazole210 claims
  5. Lisinopril187 claims
  6. Levothyroxine Sodium175 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. Southern California Permanente Medical GroupRedlands, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

David Kuzo Sugiyama among 17,133 family medicine physician records in California

David Kuzo Sugiyama, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 66% of them.

  • NPI issued2012 · 66% of these records are older, 32% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated2012 · median 2005 among the 10,652 with a school on file
  • Record last updated2021 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

198 family medicine physician records list a practice address in Fontana

They are 198 of the 3,012 NPPES records with a practice address in Fontana, and 17,133 family medicine physician records in California.

All 17,133 in California → Every provider in Fontana → Family Medicine Physician nationwide →

The 8 family medicine physician records with the nearest ZIP codes

  1. Frances Burke, MDFontana, CA 923351972674901
  2. Nathan Carlson, M.D.Fontana, CA 923351144212929
  3. Christine Carlson, MDFontana, CA 923351386612299
  4. Thawat Eosakul, M.D.Fontana, CA 923351811904519
  5. Diane Hom, MDFontana, CA 923351821169707
  6. Anissa Lacount, MDFontana, CA 923351609854397
  7. Rubin Lin, D.O.Fontana, CA 923351679678916
  8. Lannie Moy, PA-CFontana, CA 923351922037738

Common questions

What is David Kuzo Sugiyama, M.D.'s NPI number?

David Kuzo Sugiyama, M.D.'s National Provider Identifier (NPI) is 1851642771, issued on Oct 2, 2012. An NPI identifies a provider in billing; it is not a license.

Where is David Kuzo Sugiyama, M.D. located?

The NPPES record lists a practice address at 9961 Sierra Ave, Fontana, CA, 92335. Phone: (909) 427-5000. Providers update this record themselves, so call before visiting.

How can I verify David Kuzo Sugiyama, M.D.'s license?

NPPES lists California license number A130684, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does David Kuzo Sugiyama, M.D. prescribe under Medicare Part D?

In 2024, David Kuzo Sugiyama, M.D. had 5,691 Medicare Part D claims for 631 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.