John T. Nguyen, M.D.
Obstetrics & Gynecology Physician · Porterville, CA
John T. Nguyen, M.D. is an obstetrics & gynecology physician with a practice address in Porterville, California, and NPI 1154308963, issued on Dec 22, 2005. Check the license (California C181720, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John T. Nguyen
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- C181720 CA
Self-reported in NPPES; status is on the state search - Practice location
- 590 W Putnam Ave, Porterville, CA 93257
- Phone
- (559) 781-3700
- Enumerated
- Dec 22, 2005
- Record last updated
- Mar 27, 2024
- Fax
- (559) 781-1230
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 590 W Putnam Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lareina Adams, DNPFamily Nurse Practitioner1366863888
- Juan Alarcon Medina, PA-CPhysician Assistant1720727225
- Mona Attalla, P.A.Physician Assistant1073633301
- Clarissa AvalosNurse Practitioner1922947860
- Ana BorbaFamily Nurse Practitioner1649673559
- Teri Brown, M.D.Pediatrics Physician1184761363
Verify John T. Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C181720Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average obstetrics & gynecology physician in 2024
410 Medicare Part D claims for 139 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol48 claims
- Fluticasone Propionate21 claims
- Amoxicillin-Clavulanate Potass17 claims
- Methylprednisolone16 claims
- Myrbetriq14 claims
- Albuterol Sulfate Hfa12 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: $156.85
8 payments; by number, the most common kind was food and beverage; the largest payer was Agile Therapeutics, Inc. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
John T. Nguyen among 5,088 obstetrics & gynecology physician records in California
John T. Nguyen, M.D. is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 53% of these records are
- Record last updated2024 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in California
There are 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Porterville → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Satwant Dhillon, M.D.Porterville, CA 932571427075175
- Maria Hernandez, MDPorterville, CA 932571023068525
- Sukumar Misra, M.DPorterville, CA 932571578995841
- Louis Ling, MDPorterville, CA 932581508810862
- Jose Salas, M.D.Lindsay, CA 932471427062157
- Charles Taksa, M.D.Lindsay, CA 932471841229820
- Allison Gutierrez, MDLemoore, CA 932461760983308
- Lucas Mueller, M.D.Lemoore, CA 932461497830921
Common questions
What is John T. Nguyen, M.D.'s NPI number?
John T. Nguyen, M.D.'s National Provider Identifier (NPI) is 1154308963, issued on Dec 22, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John T. Nguyen, M.D. located?
The NPPES record lists a practice address at 590 W Putnam Ave, Porterville, CA, 93257. Phone: (559) 781-3700. Providers update this record themselves, so call before visiting.
How can I verify John T. Nguyen, M.D.'s license?
NPPES lists California license number C181720, 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 John T. Nguyen, M.D. prescribe under Medicare Part D?
In 2024, John T. Nguyen, M.D. had 410 Medicare Part D claims for 139 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.