Sikai Yang, M.D.
NPI 1871904821 · Rheumatology Physician · Berkeley, CA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sikai Yang, M.D. is a Rheumatology Physician provider in Berkeley, CA (NPI 1871904821).
Provider details
- NPI number
- 1871904821
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A160497 (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
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,759 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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 584 | $19 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 566 | $153 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 180 | $213 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 163 | $95 |
| Aspiration And/Or Injection of Fluid From Small Joint20600 | 84 | $54 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 221 | 83 |
| Methotrexate Sodiumbrand: Methotrexate | 192 | 61 |
| Allopurinol | 135 | 39 |
| Duloxetine Hcl | 125 | 43 |
| Hydroxychloroquine Sulfate | 112 | 30 |
| Colchicine | 96 | 40 |
| Alendronate Sodium | 59 | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,931 across 11 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 (1)
- 462 Grider StErie County Medical Center, David K. Miller BuildingBuffalo, NY 14215-3021Phone: (716) 898-4806Fax: (716) 898-3279
Registry dates
- Enumerated
- 2014-05-13
- Last updated
- 2019-09-25
Frequently asked questions
- What is Sikai Yang's NPI number?
- Sikai Yang's National Provider Identifier (NPI) is 1871904821, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sikai Yang's specialty?
- Sikai Yang is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Sikai Yang located?
- Sikai Yang's practice location on file with NPPES is 2999 Regent St Ste 301, Berkeley, CA 94705.
- What is Sikai Yang's phone number?
- The practice phone number listed in the NPPES registry for Sikai Yang is (510) 204-8120.
- Does Sikai Yang accept Medicare?
- Sikai Yang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sikai Yang's NPI active?
- Yes — Sikai Yang's NPI (1871904821) is active in the NPPES registry as of the last update on 2019-09-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.