Dr. Dean Chiang, M.D.
What this data tells you about Dr. Chiang
Dr. Dean Chiang is an allergy & immunology specialist in Torrance, CA, with 20 years of NPI registration. Based on federal Medicare data, Dr. Chiang performed 10,282 Medicare services across 846 unique beneficiaries.
Between the years covered by Open Payments, Dr. Chiang received a total of $19,162 from 36 pharmaceutical and/or device companies across 562 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in allergy & immunology. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Chiang is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
Medicare Practice Summary
Medicare Utilization ↗Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Allergy skin test A diagnostic test performed to identify specific allergies by applying or introducing allergenic extracts to the body. The procedure measures the patient's immune response to various potential allergens. |
5,634 | $4 | $10 |
| Skin allergy test A test where small amounts of potential allergens are injected into the skin to check for allergic reactions. |
1,517 | $7 | $11 |
| Allergy immunotherapy preparation A professional service involving the preparation and administration of one or more antigens. |
1,212 | $14 | $19 |
| Allergy injection therapy, multiple injections A professional service involving the administration of multiple allergen injections. |
447 | $10 | $26 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
287 | $97 | $166 |
| Allergen injection administration Professional service for the administration of a single allergen injection. |
222 | $8 | $15 |
| Drug injection, under skin or into muscle A procedure involving the administration of a medication or substance via injection into the subcutaneous tissue or muscle. |
168 | $12 | $50 |
| Non-hormonal chemotherapy injection This procedure involves administering non-hormonal anti-neoplastic chemotherapy medication via injection into the skin or muscle tissue. |
165 | $58 | $97 |
| Allergy test using drug or biological combination A diagnostic procedure to identify allergic reactions by testing a combination of methods using a specific drug or biological agent. |
132 | $18 | $26 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
110 | $134 | $293 |
| Spirometry test before and after medication A test that measures the amount of air you can exhale and the speed of your breathing before and after taking a medication. |
93 | $33 | $125 |
| Nitric oxide gas level test A test that measures the level of nitric oxide gas in the body. |
93 | $17 | $60 |
| Omalizumab injection (Xolair) for asthma/allergy | 85 | $0 | $0 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
46 | $65 | $127 |
| Flu vaccine, high-dose High-dose seasonal influenza vaccine for adults aged 65 and older. Contains four times the antigen of standard-dose flu vaccines (60 mcg per strain), split-virus formulation, preservative-free, single-dose syringe. |
22 | $69 | $70 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
22 | $24 | $25 |
| Breathing device use evaluation An assessment of how a patient uses a breathing device. The provider reviews the patient's technique and device handling. |
14 | $12 | $45 |
| Allergy test using ingested items, initial 2 hours This procedure involves testing for allergies by having the patient ingest specific items over an initial two-hour period. |
13 | $107 | $169 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2024)
All-time payments by company (2018-2024) ›
Associated products mentioned in payments ›
Most payments (91%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Chiang is a mixed practice specialist, with above-average Medicare volume (top 19% in CA), with low-engagement industry engagement in the top 15% of CA peers, with 20 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
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All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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