Eugene Wayne Tsai, MD
Allergy & Immunology Physician · Artesia, CA
Eugene Wayne Tsai, MD is an allergy & immunology physician with a practice address in Artesia, California, and NPI 1053301200, issued on Oct 27, 2005. Check the license (California A70444, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Eugene Wayne Tsai
- Credential
- MD
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- A70444 CA
Self-reported in NPPES; status is on the state search - Practice location
- 12225 South St, Artesia, CA 90701
- Phone
- (562) 865-2402
- Enumerated
- Oct 27, 2005
- Record last updated
- Dec 7, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (562) 865-6621
- Medicare enrollment
- Enrolled (PECOS I20040511001636); accepts Medicare assignment
- Medical or professional school
- Albany Medical College Of Union University, 1998
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 444 in California → Look up another NPI →
Also registered at 12225 South St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Pean-Yuan Wang, M.D.General Practice Physician1154417061
Verify Eugene Wayne Tsai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A70444Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average allergy & immunology physician in 2024
166 Medicare Part D claims for 31 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 43% of claims.
Most prescribed
- Fluticasone Propionate33 claims
- Dupixent Syringe13 claims
- Albuterol Sulfate Hfa11 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.
Industry payments in 2024: $363.53
17 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 2,496 providers of this specialty with any payment received $8,321.81 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.
Eugene Wayne Tsai among 444 allergy & immunology physician records in California
Eugene Wayne Tsai, MD is one of 444 allergy & immunology physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1998 · median 2004 among the 281 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 207K00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology Physician providers in California
There are 444 allergy & immunology physician records in California.
All 444 in California → Every provider in Artesia → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Marc Baskin, M.D.Bellflower, CA 907061124035076
- Dennis Jerome, M.D.Los Alamitos, CA 907201720090301
- Alexander Loscialpo, M.D.Los Alamitos, CA 907201174638258
- Anand Trivedi, M.D.Norwalk, CA 906501437599495
- Jungmee Kim, M.D.La Mirada, CA 906381669465225
- Louis Marchioli, M.D.La Mirada, CA 906381164414603
- Kenneth Kim, M.D.Long Beach, CA 908061205833563
- Inderpal Randhawa, M.D.Long Beach, CA 908061316035363
Common questions
What is Eugene Wayne Tsai, MD's NPI number?
Eugene Wayne Tsai, MD's National Provider Identifier (NPI) is 1053301200, issued on Oct 27, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Eugene Wayne Tsai, MD located?
The NPPES record lists a practice address at 12225 South St, Artesia, CA, 90701. Phone: (562) 865-2402. Providers update this record themselves, so call before visiting.
How can I verify Eugene Wayne Tsai, MD's license?
NPPES lists California license number A70444, 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 Eugene Wayne Tsai, MD prescribe under Medicare Part D?
In 2024, Eugene Wayne Tsai, MD had 166 Medicare Part D claims for 31 beneficiaries; the average among allergy & immunology physician prescribers was 741. 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.