NPPES file of Aug 9, 2026

Ting-Wei Ou, MD

Occupational Medicine Physician · Corona, CA

Ting-Wei Ou, MD is an occupational medicine physician with a practice address in Corona, California, and NPI 1669600250, issued on Jun 23, 2009. Check the license (California A133010, 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
1669600250
Name
Ting-Wei Ou
Credential
MD
Primary taxonomy
Occupational Medicine Physician 2083X0100X
License number
A133010 CA
Self-reported in NPPES; status is on the state search
Practice location
21634 Retreat Pkwy, Corona, CA 92883
Phone
(951) 493-6929
Enumerated
Jun 23, 2009
Record last updated
Apr 14, 2025
Fax
(951) 826-8156
Medicare enrollment
Enrolled (PECOS I20190416003194); accepts Medicare assignment
Medical or professional school
Medical College Of Georgia School Of Medicine, 2009
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 21634 Retreat Pkwy

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

  1. Abdul AnsariDermatology Physician1124655170
  2. Massimo Arcerito, MDSurgery Physician1023200409
  3. Samarjeet BajwaNeurology Physician1851719512
  4. Anand Bhupathy, D.O.Dermatology Physician1881790418
  5. Simran Brar, DOEndocrinology, Diabetes & Metabolism Physician1164783908
  6. Steven Deterville, MDPediatrics Physician1700860285

Verify Ting-Wei Ou in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A133010
    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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71% fewer Medicare Part D claims than the average occupational medicine physician in 2024

231 Medicare Part D claims for 159 beneficiaries, against an average of 794 among the 463 providers of this specialty who prescribed in Part D.

  1. Ting-Wei Ou231
  2. Specialty average794

Most prescribed

  1. Azithromycin52 claims
  2. Nitrofurantoin Mono-Macro28 claims
  3. Albuterol Sulfate Hfa26 claims
  4. Amoxicillin-Clavulanate Potass21 claims
  5. Ciprofloxacin Hcl15 claims
  6. Paxlovid14 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. Riverside Medical Clinic IncRiverside, CA

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

Ting-Wei Ou among 415 occupational medicine physician records in California

Ting-Wei Ou, MD is one of 415 occupational medicine physician records with a practice address in California. 30% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 76% of them.

  • NPI issued2009 · 76% of these records are older, 20% newer
  • In a Medicare fileYes · 30% of these records are
  • In the CMS Doctors and Clinicians fileYes · 12% of these records are
  • Graduated2009 · median 1995 among the 51 with a school on file
  • Record last updated2025 · 75% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2083X0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Occupational Medicine Physician providers in California

There are 415 occupational medicine physician records in California.

The 8 occupational medicine physician records with the nearest ZIP codes

  1. Oluyemisi Olubi, MD, MPH.Corona, CA 928821942496096
  2. Nelhs Betancourt, MD, MPH, DABTCorona, CA 928791780779371
  3. Dean B Baker, MDOrange, CA 928681689754764
  4. Wayne Chang, MDOrange, CA 928681306926076
  5. Jessica Chuang, M.D.Orange, CA 928681861802613
  6. Leslie M Israel, DOOrange, CA 928681285714451
  7. Elliott Kornhauser, MDOrange, CA 928681508946716
  8. Behzad Haghi, MDAnaheim, CA 928071477620367

Common questions

What is Ting-Wei Ou, MD's NPI number?

Ting-Wei Ou, MD's National Provider Identifier (NPI) is 1669600250, issued on Jun 23, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Ting-Wei Ou, MD located?

The NPPES record lists a practice address at 21634 Retreat Pkwy, Corona, CA, 92883. Phone: (951) 493-6929. Providers update this record themselves, so call before visiting.

How can I verify Ting-Wei Ou, MD's license?

NPPES lists California license number A133010, 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 Ting-Wei Ou, MD prescribe under Medicare Part D?

In 2024, Ting-Wei Ou, MD had 231 Medicare Part D claims for 159 beneficiaries; the average among occupational medicine physician prescribers was 794. 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.