Pauline B. Tsai, MD
Allergy Physician · Fontana, CA
Pauline B. Tsai, MD is an allergy physician with a practice address in Fontana, California, and NPI 1336216357, issued on Nov 29, 2006. Check the license (California G80447, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Pauline B. Tsai
- Credential
- MD
- Primary taxonomy
- Allergy Physician 207KA0200X
- License number
- G80447 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9961 Sierra Ave, Fontana, CA 92335
- Phone
- (909) 427-3910
- Enumerated
- Nov 29, 2006
- Record last updated
- Nov 29, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest allergy physician records → All 157 in California → Look up another NPI →
Also registered at 9961 Sierra Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Pauline B. Tsai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G80447Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
67% fewer Medicare Part D claims than the average allergy physician in 2024
244 Medicare Part D claims for 100 beneficiaries, against an average of 750 among the 645 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Montelukast Sodium47 claims
- Azelastine Hcl35 claims
- Wixela Inhub22 claims
- Breyna17 claims
- Spiriva Respimat14 claims
- Dulera11 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.
Pauline B. Tsai among 157 allergy physician records in California
Pauline B. Tsai, MD is one of 157 allergy physician records with a practice address in California. 69% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 31% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · 52% of these records are
- Record last updated2021 · 70% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207KA0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy Physician providers in California
There are 157 allergy physician records in California.
All 157 in California → Every provider in Fontana → Allergy Physician nationwide →
The 8 allergy physician records with the nearest ZIP codes
- Michael Chien, MDFontana, CA 923351689741555
- Michelle Revier, MDFontana, CA 923351437656915
- Luis Saca, MDLoma Linda, CA 923501538236450
- James Munson, MDRedlands, CA 923731346295904
- Sam Weiss, M.D.Rancho Mirage, CA 922701881692655
- Hosea Brown, M.D.Palm Springs, CA 922621891787289
- Shams Iqbal, MDRiverside, CA 925011598846834
- Asif Imam, MDRiverside, CA 925051225169345
Common questions
What is Pauline B. Tsai, MD's NPI number?
Pauline B. Tsai, MD's National Provider Identifier (NPI) is 1336216357, issued on Nov 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Pauline B. Tsai, MD located?
The NPPES record lists a practice address at 9961 Sierra Ave, Fontana, CA, 92335. Phone: (909) 427-3910. Providers update this record themselves, so call before visiting.
How can I verify Pauline B. Tsai, MD's license?
NPPES lists California license number G80447, 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 Pauline B. Tsai, MD prescribe under Medicare Part D?
In 2024, Pauline B. Tsai, MD had 244 Medicare Part D claims for 100 beneficiaries; the average among allergy physician prescribers was 750. 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.