NPPES file of Aug 9, 2026

Yuichiro David Nakai, M.D.

Endocrinology, Diabetes & Metabolism Physician · Santa Rosa, CA

Yuichiro David Nakai, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Santa Rosa, California, and NPI 1497739114, issued on Dec 6, 2005. Check the license (California A76178, 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
1497739114
Name
Yuichiro David Nakai
Credential
M.D.
Primary taxonomy
Endocrinology, Diabetes & Metabolism Physician 207RE0101X
License number
A76178 CA
Self-reported in NPPES; status is on the state search
Practice location
1162 Montgomery Dr Ste 300, Santa Rosa, CA 95405
Phone
(707) 890-4250
Enumerated
Dec 6, 2005
Record last updated
Sep 23, 2024
Medicare enrollment
Enrolled (PECOS I20051026001066); accepts Medicare assignment
Medical or professional school
Saint Louis University School Of Medicine, 2000
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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Also registered at 1162 Montgomery Dr Ste 300

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

  1. Eric Amirkhani, PA-CPhysician Assistant1407593577
  2. Michael Pezold, M.D.Vascular Surgery Physician1720377856
  3. Brianne Shea, PAPhysician Assistant1841804754

Verify Yuichiro David Nakai in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A76178
    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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86% more Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024

4,886 Medicare Part D claims for 703 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 43% of claims.

  1. Yuichiro Nakai4,886
  2. Specialty average2,630

Most prescribed

  1. Levothyroxine Sodium689 claims
  2. Ozempic333 claims
  3. Liothyronine Sodium238 claims
  4. Metformin Hcl193 claims
  5. Methimazole191 claims
  6. Jardiance164 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.

Industry payments in 2024: $41.28

2 payments; by number, the most common kind was food and beverage; the largest payer was Abbott Laboratories. The 5,661 providers of this specialty with any payment received $5,742.15 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Yuichiro Nakai$41.28
  2. Specialty average$5,742.15

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Providence Medical FoundationSanta Rosa, CA

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

Endocrinology, Diabetes & Metabolism Physician providers in California

There are 1,131 endocrinology, diabetes & metabolism physician records in California.

Other endocrinology, diabetes & metabolism physician records in California

  1. Evan Abel, MDSanta Monica, CA1619067238
  2. Anita Abraham, M.D.Stockton, CA1558380337
  3. Sallie Adams, M.D.Roseville, CA1255342085
  4. Helen Adelberg, M.D.Encino, CA1093935447
  5. Yewande Adepoju, DOOroville, CA1467892984
  6. David Aftergood, MDBeverly Hills, CA1639259328
  7. Nidhi Agarwal, MDTorrance, CA1518387125
  8. Bahar Aghighi, MDSanta Cruz, CA1770562134
  9. Tyler Aguinaldo, MDBurlingame, CA1306811906
  10. Susan Ahern, D.O.Ventura, CA1508156597

Common questions

What is Yuichiro David Nakai, M.D.'s NPI number?

Yuichiro David Nakai, M.D.'s National Provider Identifier (NPI) is 1497739114, issued on Dec 6, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Yuichiro David Nakai, M.D. located?

The NPPES record lists a practice address at 1162 Montgomery Dr Ste 300, Santa Rosa, CA, 95405. Phone: (707) 890-4250. Providers update this record themselves, so call before visiting.

How can I verify Yuichiro David Nakai, M.D.'s license?

NPPES lists California license number A76178, 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 Yuichiro David Nakai, M.D. prescribe under Medicare Part D?

In 2024, Yuichiro David Nakai, M.D. had 4,886 Medicare Part D claims for 703 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.

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.