Justina Tseng, MD
NPI 1346276540 · Rheumatology Physician · Redding, CA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Justina Tseng, MD is a Rheumatology Physician provider in Redding, CA (NPI 1346276540).
Provider details
- NPI number
- 1346276540
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- C54040 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
482 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 383 | $90 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 99 | $61 |
Typical Medicare-allowed amounts for these services range $61–$90 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 37 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methotrexate Sodiumbrand: Methotrexate | 440 | 107 |
| Prednisone | 355 | 128 |
| Adalimumabbrand: Humira(cf) Pen | 295 | 42 |
| Hydroxychloroquine Sulfate | 293 | 83 |
| Leflunomide | 225 | 65 |
| Abataceptbrand: Orencia Clickject | 205 | 32 |
| Etanercept |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$690 across 29 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 4725 Market StSan Diego, CA 92102-4715Phone: (619) 515-2560
- 243 Elm StClaremont, NH 03743-4921Phone: (858) 227-9187
Registry dates
- Enumerated
- 2006-06-23
- Last updated
- 2026-03-05
- Certified
- 2026-03-05
Frequently asked questions
- What is Justina Tseng's NPI number?
- Justina Tseng's National Provider Identifier (NPI) is 1346276540, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Justina Tseng's specialty?
- Justina Tseng is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Justina Tseng located?
- Justina Tseng's practice location on file with NPPES is 1335 Buenaventura Blvd, Redding, CA 96001-0160.
- What is Justina Tseng's phone number?
- The practice phone number listed in the NPPES registry for Justina Tseng is (530) 287-9758.
- Does Justina Tseng accept Medicare?
- Justina Tseng is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Justina Tseng's NPI active?
- Yes — Justina Tseng's NPI (1346276540) is active in the NPPES registry as of the last update on 2026-03-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.