Bryon Weichung Tseng, M.D.
Rheumatology Physician · Anaheim, CA
Bryon Weichung Tseng, M.D. is a rheumatology physician with a practice address in Anaheim, California, and NPI 1205154218, issued on May 14, 2010. Check the license (California A124716, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Bryon Weichung Tseng
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- A124716 CA
Self-reported in NPPES; status is on the state search - Practice location
- 411 N Lakeview Ave, Anaheim, CA 92807
- Phone
- (888) 988-2800
- Enumerated
- May 14, 2010
- Record last updated
- Nov 4, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (888) 988-2800
- Medicare enrollment
- Enrolled (PECOS I20150904002350); accepts Medicare assignment
- Medical or professional school
- University Of Maryland School Of Medicine, 2010
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 926 in California → Look up another NPI →
Also registered at 411 N Lakeview Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Anil Bahadursingh, MDColon & Rectal Surgery Physician1750485363
- Mojdeh BaudryOncology Pharmacist1740340231
- Neetu Bhola, M.D.Geriatric Medicine (Family Medicine) Physician1427345503
Verify Bryon Weichung Tseng in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A124716Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
18% more Medicare Part D claims than the average rheumatology physician in 2024
2,339 Medicare Part D claims for 516 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 127 claims were for opioids.
Most prescribed
- Prednisone349 claims
- Hydroxychloroquine Sulfate331 claims
- Methotrexate289 claims
- Leflunomide121 claims
- Rasuvo116 claims
- Allopurinol87 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
- Southern California Permanente Medical GroupAnaheim, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Bryon Weichung Tseng among 926 rheumatology physician records in California
Bryon Weichung Tseng, M.D. is one of 926 rheumatology physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 66% of them.
- NPI issued2010 · 66% of these records are older, 32% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2010 · median 2003 among the 641 with a school on file
- Record last updated2021 · 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 207RR0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in California
There are 926 rheumatology physician records in California.
All 926 in California → Every provider in Anaheim → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Kara Bradford, M.D.Anaheim, CA 928071457582488
- Parke Chang, MDAnaheim, CA 928071013122605
- Charles Kenyon, MDAnaheim, CA 928071043417447
- Randy Lehmer, MDAnaheim, CA 928071770654683
- Swati Medhekar, MDAnaheim, CA 928071427125442
- Kumar Venkat, MDAnaheim, CA 928071255489076
- Nicholas Kim, M.D.Anaheim, CA 928041235227760
- Maryam Gul, M.D.Anaheim, CA 928021497015192
Common questions
What is Bryon Weichung Tseng, M.D.'s NPI number?
Bryon Weichung Tseng, M.D.'s National Provider Identifier (NPI) is 1205154218, issued on May 14, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Bryon Weichung Tseng, M.D. located?
The NPPES record lists a practice address at 411 N Lakeview Ave, Anaheim, CA, 92807. Phone: (888) 988-2800. Providers update this record themselves, so call before visiting.
How can I verify Bryon Weichung Tseng, M.D.'s license?
NPPES lists California license number A124716, 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 Bryon Weichung Tseng, M.D. prescribe under Medicare Part D?
In 2024, Bryon Weichung Tseng, M.D. had 2,339 Medicare Part D claims for 516 beneficiaries; the average among rheumatology physician prescribers was 1,978. 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.