Aloyisus Tsang, M.D.
Internal Medicine Physician · Burbank, CA
Aloyisus Tsang, M.D. is an internal medicine physician with a practice address in Burbank, California, and NPI 1891856340, issued on Dec 12, 2006. Check the license (California G80123, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Aloyisus Tsang
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G80123 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4323 W Riverside Dr, Burbank, CA 91505
- Phone
- (818) 556-2700
- Enumerated
- Dec 12, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20111209000083); accepts Medicare assignment
- Medical or professional school
- St. Louis College Of Physicians And Surgeons, 1993
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 4323 W Riverside Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Aloyisus Tsang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G80123Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average internal medicine physician in 2024
6,992 Medicare Part D claims for 977 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 91 claims were for opioids.
Most prescribed
- Rosuvastatin Calcium496 claims
- Atorvastatin Calcium306 claims
- Amlodipine Besylate267 claims
- Levothyroxine Sodium240 claims
- Trazodone Hcl210 claims
- Telmisartan203 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.
Bills Medicare through one group practice
- Cedars-Sinai Medical Care FoundationBeverly Hills, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Aloyisus Tsang among 17,696 internal medicine physician records in California
Aloyisus Tsang, M.D. is one of 17,696 internal medicine 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1993 · median 2004 among the 11,065 with a school on file
- Record last updated2007 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
64 internal medicine physician records list a practice address in Burbank
They are 64 of the 3,375 NPPES records with a practice address in Burbank, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Burbank → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Angela Adelman, M.D.Burbank, CA 915051548262017
- Maral Touna Arpi Donabedian, MDBurbank, CA 915051588622906
- Eric Feit, M.D.Burbank, CA 915051588654875
- Mark Gerard, MDBurbank, CA 915051023036670
- Michael Goldberg, M.D.Burbank, CA 915051669402764
- Richard Kroop, MDBurbank, CA 915051992735591
- Susanna Lansangan, M.D.Burbank, CA 915051780688036
- Sharad Patel, M.D.Burbank, CA 915051548236243
Common questions
What is Aloyisus Tsang, M.D.'s NPI number?
Aloyisus Tsang, M.D.'s National Provider Identifier (NPI) is 1891856340, issued on Dec 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Aloyisus Tsang, M.D. located?
The NPPES record lists a practice address at 4323 W Riverside Dr, Burbank, CA, 91505. Phone: (818) 556-2700. Providers update this record themselves, so call before visiting.
How can I verify Aloyisus Tsang, M.D.'s license?
NPPES lists California license number G80123, 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 Aloyisus Tsang, M.D. prescribe under Medicare Part D?
In 2024, Aloyisus Tsang, M.D. had 6,992 Medicare Part D claims for 977 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.