NPPES file of Aug 9, 2026

Jonathan H. Yamaguchi, M.D.

Family Medicine Physician · Harlingen, TX

Jonathan H. Yamaguchi, M.D. is a family medicine physician with a practice address in Harlingen, Texas, and NPI 1689687428, issued on Aug 14, 2006. Check the license (Texas G5858, as entered in NPPES) on the Texas Medical Board; 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
1689687428
Name
Jonathan H. Yamaguchi
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
G5858 TX
Self-reported in NPPES; status is on the state search
Practice location
1401 S Rangerville RD, Harlingen, TX 78552
Phone
(956) 364-8400
Enumerated
Aug 14, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(956) 364-8497
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 1401 S Rangerville RD

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

  1. Gonzalo Aillon, D.O.Internal Medicine Physician1598790644
  2. Maria Dill, M.D.Family Medicine Physician1578594263
  3. Jessica Fernandez, APRN, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1427703867
  4. Karla Garcia, NP-CFamily Nurse Practitioner1588166151
  5. Danaji Gonzalez, LCSWClinical Social Worker1023597317
  6. Veronica Hayes, R.D.Registered Dietitian1225319536

Verify Jonathan H. Yamaguchi in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license G5858
    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 Texas 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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98% fewer Medicare Part D claims than the average family medicine physician in 2024

67 Medicare Part D claims for 13 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.

  1. Jonathan Yamaguchi67
  2. Specialty average3,544

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.

Jonathan H. Yamaguchi among 11,119 family medicine physician records in Texas

Jonathan H. Yamaguchi, M.D. is one of 11,119 family medicine physician records with a practice address in Texas. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.

  • NPI issued2006 · 12% of these records are older, 54% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileNo · 64% of these records are
  • Record last updated2007 · 51% 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 Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

68 family medicine physician records list a practice address in Harlingen

They are 68 of the 2,419 NPPES records with a practice address in Harlingen, and 11,119 family medicine physician records in Texas.

The 8 family medicine physician records with the nearest ZIP codes

  1. Maria Dill, M.D.Harlingen, TX 785521578594263
  2. Arnulfo Izquierdo, D.O.Harlingen, TX 785521588617989
  3. Rosalio PadillaHarlingen, TX 785521730641986
  4. Marcelino Pon, M.D.Harlingen, TX 785521598795254
  5. Irvin Del Angel, MDHarlingen, TX 785501376006999
  6. Qurrat-Ul-Ain Elahi, MDHarlingen, TX 785501497319495
  7. Redi Ferizaj, MDHarlingen, TX 785501568950350
  8. Drew Fidler, DOHarlingen, TX 785501750203162

Common questions

What is Jonathan H. Yamaguchi, M.D.'s NPI number?

Jonathan H. Yamaguchi, M.D.'s National Provider Identifier (NPI) is 1689687428, issued on Aug 14, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Jonathan H. Yamaguchi, M.D. located?

The NPPES record lists a practice address at 1401 S Rangerville RD, Harlingen, TX, 78552. Phone: (956) 364-8400. Providers update this record themselves, so call before visiting.

How can I verify Jonathan H. Yamaguchi, M.D.'s license?

NPPES lists Texas license number G5858, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Jonathan H. Yamaguchi, M.D. prescribe under Medicare Part D?

In 2024, Jonathan H. Yamaguchi, M.D. had 67 Medicare Part D claims for 13 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.

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.