Dr. Dean T. Chiang, M.D.
Allergy & Immunology (Allergy & Immunology Physician)
3440 Lomita Blvd, Suite 228
Torrance, CA 90505
Who else practices at this address →
Los Angeles County includes primary care (7% of residents) and mental health (13% of residents) shortage areas. About shortage areas
- Medicare participating
At a glance
- Medical school
- Tufts University School of Medicine (1999)
- Years since graduation
- 27
- In the NPI registry since
- 2005
- Medicare patients seen, 2024
- 355
Licensed in California since 2001, according to the Medical Board of California. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 1999Medical school: Tufts University School of Medicine
- 2005Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Allergy & Immunology Physician primary
CA license A73856 (first issued 2001; current)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Torrance Memorial Medical Center Torrance, CA
Medical groups
- Sutter Bay Medical Foundation (3,829 clinicians)
- Allan D Singer MD Inc and Dean T Chiang MD Inc A Medical PArtnership (2 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 355
- Services billed
- 12,487
- Patients’ average age
- 74
| Service | Times | Patients |
|---|---|---|
| Test for allergy using allergenic extract | 5,634 | 67 |
| Test for allergy using allergenic extract injected into skin | 1,517 | 41 |
| Professional service for preparation and provision of 1 or more antigens | 1,212 | 50 |
| Professional service for multiple injections of allergen | 447 | 88 |
| Established patient office or other outpatient visit, 30-39 minutes | 287 | 170 |
| Professional service for single injection of allergen | 222 | 35 |
| Injection of drug or substance under skin or into muscle | 168 | 22 |
| Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle | 165 | 13 |
| Test for allergy using combination of methods with drug or biological | 132 | 11 |
| New patient office or other outpatient visit, 45-59 minutes | 110 | 110 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Azelastine Hcl Other prescribers in Torrance, CA | 258 |
| Fluticasone Propionate Other prescribers in Torrance, CA | 146 |
| Ipratropium Bromide Other prescribers in Torrance, CA | 115 |
| Trelegy Ellipta (fluticasone/umeclidin/vilanter) Other prescribers in Torrance, CA | 92 |
| Xolair (omalizumab) | 80 |
| Wixela Inhub (fluticasone propion/salmeterol) Other prescribers in Torrance, CA | 69 |
| Breo Ellipta (fluticasone/vilanterol) Other prescribers in Torrance, CA | 54 |
| Fluticasone-Salmeterol (fluticasone propion/salmeterol) Other prescribers in Torrance, CA | 54 |
| Dupixent Syringe (dupilumab) Other prescribers in Torrance, CA | 52 |
| Montelukast Sodium Other prescribers in Torrance, CA | 52 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 25 companies reported 150 payments worth $3,933 in total to this clinician.
| AstraZeneca Pharmaceuticals LP | $767 |
|---|---|
| GlaxoSmithKline, LLC. | $710 |
| Genzyme Corporation | $640 |
| Regeneron Healthcare Solutions, Inc. | $237 |
| Novartis Pharmaceuticals Corporation | $230 |
| Galderma Laboratories, L.P. | $185 |
| Pfizer Inc. | $138 |
| Biocryst US Sales Co., LLC | $101 |
| Food and Beverage | $3,900 |
|---|---|
| Consulting Fee | $33.45 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Adma Biomanufacturing LLC Oct 14, 2025 | Consulting Fee | $20.14 |
| Adma Biomanufacturing LLC Oct 14, 2025 | Consulting Fee | $13.31 |
Each payment as the company reported it, with the products it named. Meals are counted in the totals above but not listed one by one.
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.