NPPES file of Aug 9, 2026

Wikrom Chaiwatcharayut, M.D.

Internal Medicine Physician · Ventura, CA

Wikrom Chaiwatcharayut, M.D. is an internal medicine physician with a practice address in Ventura, California, and NPI 1306259809, issued on Jun 3, 2014. Check the license (California A144707, 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1306259809
Name
Wikrom Chaiwatcharayut
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License numbers
A144707 CA
2021-02077 NC
Self-reported in NPPES; status is on the state search
Practice location
200 S Wells RD, Ventura, CA 93004
Phone
(805) 647-6322
Enumerated
Jun 3, 2014
Record last updated
Jul 22, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(805) 647-7164
Medicare enrollment
Enrolled (PECOS I20210729000763); may accept Medicare assignment
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 200 S Wells RD

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

  1. Fouzia Aftab, MDFamily Medicine Physician1013938109
  2. Sandra Alvarado, PHDClinical Psychologist1912274713
  3. Syd Bakshandeh, M.D.Internal Medicine Physician1982820932
  4. Laureen Berry, FNPFamily Nurse Practitioner1124496203
  5. Marisela Cabral-Centeno, MSWClinical Social Worker1255597787
  6. Julia Callaghan, ASW36282Mental Health Counselor1356696140

Verify Wikrom Chaiwatcharayut in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A144707
    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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2.8 times the Medicare Part D claims of the average internal medicine physician in 2024

8,983 Medicare Part D claims for 593 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 168 claims were for opioids.

  1. Wikrom Chaiwatcharayut8,983
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium476 claims
  2. Losartan Potassium439 claims
  3. Amlodipine Besylate417 claims
  4. Levothyroxine Sodium324 claims
  5. Rosuvastatin Calcium316 claims
  6. Lisinopril314 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.

The MIPS final score for 2023 (Medicare payment program): 97.6 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score86.5
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $1,781.54

98 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Wikrom Chaiwatcharayut$1,781.54
  2. Specialty average$1,303.06

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. Village Internal Medicine, PAFayetteville, NC

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

Wikrom Chaiwatcharayut among 17,696 internal medicine physician records in California

Wikrom Chaiwatcharayut, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 74% of them.

  • NPI issued2014 · 74% of these records are older, 24% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated2012 · median 2004 among the 11,065 with a school on file
  • Record last updated2021 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

68 internal medicine physician records list a practice address in Ventura

They are 68 of the 4,435 NPPES records with a practice address in Ventura, and 17,696 internal medicine physician records in California.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Syd Bakshandeh, M.D.Ventura, CA 930041982820932
  2. Ilona Sylvester, M.D.Ventura, CA 930041215959291
  3. Christine Brown, MBS, DOVentura, CA 930031639872906
  4. Hana Chakalian, DOVentura, CA 930031962145631
  5. Sosi Dzhugarian, DOVentura, CA 930031124762265
  6. Thatcher Huynh, DOVentura, CA 930031730743022
  7. Rahul JalotaVentura, CA 930031194460741
  8. Naila JavaidVentura, CA 930031881258903

Common questions

What is Wikrom Chaiwatcharayut, M.D.'s NPI number?

Wikrom Chaiwatcharayut, M.D.'s National Provider Identifier (NPI) is 1306259809, issued on Jun 3, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Wikrom Chaiwatcharayut, M.D. located?

The NPPES record lists a practice address at 200 S Wells RD, Ventura, CA, 93004. Phone: (805) 647-6322. Providers update this record themselves, so call before visiting.

How can I verify Wikrom Chaiwatcharayut, M.D.'s license?

NPPES lists California license number A144707, 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 Wikrom Chaiwatcharayut, M.D. prescribe under Medicare Part D?

In 2024, Wikrom Chaiwatcharayut, M.D. had 8,983 Medicare Part D claims for 593 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

What is Wikrom Chaiwatcharayut, M.D.'s MIPS final score?

The 2023 MIPS final score is 97.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.

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.