Irene Y. Tong, M.D.
Rheumatology Physician · Pasadena, CA
Irene Y. Tong, M.D. is a rheumatology physician with a practice address in Pasadena, California, and NPI 1962439299, issued on Jun 26, 2006. Check the license (California G34761, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Irene Y. Tong
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- G34761 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2750 E Washington Blvd, Pasadena, CA 91107
- Phone
- (626) 296-2910
- Enumerated
- Jun 26, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (626) 296-2920
- Medicare enrollment
- Enrolled (PECOS I20051020001065); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 1976
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 926 in California → Look up another NPI →
Also registered at 2750 E Washington Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rita AkhianMarriage & Family Therapist1932961067
- Yvette Baharyans, MFTMarriage & Family Therapist1376687806
- Janet BedollaProfessional Counselor1679076202
- Tyree BlackamoreDay Training/Habilitation Specialist1841052974
- Jocelyn CanalesStudent in an Organized Health Care Education/Training Program1295371144
- Christian Coleman, MSWClinical Social Worker1518618867
Verify Irene Y. Tong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G34761Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% fewer Medicare Part D claims than the average rheumatology physician in 2024
1,823 Medicare Part D claims for 232 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 26 claims were for opioids.
Most prescribed
- Hydroxychloroquine Sulfate234 claims
- Methotrexate181 claims
- Prednisone135 claims
- Celecoxib131 claims
- Gabapentin78 claims
- Diclofenac Sodium65 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $2,943.61
107 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 4,486 providers of this specialty with any payment received $8,538.33 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.
Bills Medicare through one group practice
- American Arthritis And Rheumatology Associates-CA PCVista, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Irene Y. Tong among 926 rheumatology physician records in California
Irene Y. Tong, M.D. is one of 926 rheumatology physician records with a practice address in California. 81% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1976 · median 2003 among the 641 with a school on file
- Record last updated2007 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in California
There are 926 rheumatology physician records in California.
All 926 in California → Every provider in Pasadena → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- David Brown, MDPasadena, CA 911051689710055
- Stratos Christianakis, M.D.Pasadena, CA 911051831114008
- Roodabeh Koolaee, DOPasadena, CA 911051316250525
- Dean Noritake, MDPasadena, CA 911051477514495
- Brian Oconnor, MDPasadena, CA 911051770641870
- Vickram Reehal, M.D.Pasadena, CA 911051235347188
- Darice Yang, M.D.Pasadena, CA 911051427255454
- Dan La, MDTujunga, CA 910421437178274
Common questions
What is Irene Y. Tong, M.D.'s NPI number?
Irene Y. Tong, M.D.'s National Provider Identifier (NPI) is 1962439299, issued on Jun 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Irene Y. Tong, M.D. located?
The NPPES record lists a practice address at 2750 E Washington Blvd, Pasadena, CA, 91107. Phone: (626) 296-2910. Providers update this record themselves, so call before visiting.
How can I verify Irene Y. Tong, M.D.'s license?
NPPES lists California license number G34761, 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 Irene Y. Tong, M.D. prescribe under Medicare Part D?
In 2024, Irene Y. Tong, M.D. had 1,823 Medicare Part D claims for 232 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is Irene Y. Tong, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.