Physician Profile
Based in Pasadena, CA, Irene Y. Tong, M.D. is listed in the NPI registry under rheumatology. Irene graduated from University of Southern California Keck School of Medicine in 1976. Medicare claims data shows Irene provided 17,695 services to 544 patients. The services billed most often include injection, romosozumab-aqqg, 1 mg, injection, denosumab, 1 mg, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
2750 E WASHINGTON BLVD SUITE 120
Pasadena, CA 91107
Within Rheumatology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Most searched conditions
Autoimmune
Bone
Bone Health
Connective Tissue
Genetic & Connective Tissue
Inflammatory
Joints
Nerve & Tendon
Skin & Soft Tissue
Skin & Vascular
Soft Tissue
Spine & Back
Vascular
Most searched procedures
Consultation
Consultations
Diagnostics & Injections
Education & Support
Imaging
Injections
Lab & Diagnostics
Lab Work
Medication Management
Pain Relief
Regenerative Medicine
17,695 services · 544 patients · 11 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
128 | As often as other peers in Rheumatology |
| Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle | Treatment | 96401 |
114 | Less often than most peers in Rheumatology |
| Administration of chemotherapy into vein, 1 hour or less | Treatment | 96413 |
71 | Less often than most peers in Rheumatology |
| Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | Treatment | 96365 |
51 | Less often than most peers in Rheumatology |
| Injection, romosozumab-aqqg, 1 mg | Drug given | J3111 |
12,392 | As often as other peers in Rheumatology |
| Injection, denosumab, 1 mg | Drug given | J0897 |
4,020 | As often as other peers in Rheumatology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
764 | More often than most peers in Rheumatology |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
88 | More often than most peers in Rheumatology |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
30 | As often as other peers in Rheumatology |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
23 | Less often than most peers in Rheumatology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Irene Y. Tong is a rheumatologist in Pasadena, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Rheumatology”.
NPI registry
Irene Y. Tong is listed at 2750 E Washington Blvd Suite 120, Pasadena, CA 91107. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (626) 296-2910. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Irene Y. Tong's National Provider Identifier is 1962439299. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Irene Y. Tong attended University of Southern California Keck School of Medicine, graduating in 1976. This comes from the CMS National Downloadable File.
CMS public data
Irene Y. Tong has 50 years experience. Calculated from a graduation year of 1976, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Irene Y. Tong provides treatments such as injection of drug or substance under skin or into muscle and administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Irene Y. Tong. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.