Bryon Tseng, M.D.
NPI 1205154218 · Rheumatology Physician · Anaheim, CA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Bryon Tseng, M.D. is a Rheumatology Physician provider in Anaheim, CA (NPI 1205154218).
Provider details
- NPI number
- 1205154218
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 349 | 137 |
| Hydroxychloroquine Sulfate | 331 | 130 |
| Methotrexate Sodiumbrand: Methotrexate | 289 | 100 |
| Leflunomide | 121 | 53 |
| Methotrexate/Pfbrand: Rasuvo | 116 | 20 |
| Allopurinol | 87 | 27 |
| Adalimumab-Attobrand: Amjevita(cf) Autoinjector | 86 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-05-14
- Last updated
- 2021-11-04
- Certified
- 2021-11-04
Frequently asked questions
- What is Bryon Tseng's NPI number?
- Bryon Tseng's National Provider Identifier (NPI) is 1205154218, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Bryon Tseng's specialty?
- Bryon Tseng is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Bryon Tseng located?
- Bryon Tseng's practice location on file with NPPES is 411 N Lakeview Ave, Anaheim, CA 92807-3028.
- What is Bryon Tseng's phone number?
- The practice phone number listed in the NPPES registry for Bryon Tseng is (888) 988-2800.
- Does Bryon Tseng accept Medicare?
- Bryon Tseng is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Bryon Tseng's NPI active?
- Yes — Bryon Tseng's NPI (1205154218) is active in the NPPES registry as of the last update on 2021-11-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.