Yijun Fan, M.D.
NPI 1336161751 · Rheumatology Physician · Dallas, TX
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Yijun Fan, M.D. is a Rheumatology Physician provider in Dallas, TX (NPI 1336161751).
Provider details
- NPI number
- 1336161751
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- L1570 (TX)
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
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,450 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 | 1,109 | $124 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 95 | $118 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 90 | $14 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 82 | $163 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 47 | $172 |
| Aspiration And/Or Injection of Fluid From Large Joint |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 56 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methotrexate Sodiumbrand: Methotrexate | 725 | 192 |
| Hydroxychloroquine Sulfate | 610 | 178 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 595 | 77 |
| Prednisone | 459 | 130 |
| Tramadol Hcl | 278 | 51 |
| Gabapentin | 241 | 74 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,973 across 159 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
Registry dates
- Enumerated
- 2006-07-24
- Last updated
- 2025-11-13
- Certified
- 2025-11-13
Frequently asked questions
- What is Yijun Fan's NPI number?
- Yijun Fan's National Provider Identifier (NPI) is 1336161751, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Yijun Fan's specialty?
- Yijun Fan is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Yijun Fan located?
- Yijun Fan's practice location on file with NPPES is 8440 Walnut Hill Ln Ste 580, Dallas, TX 75231-3881.
- What is Yijun Fan's phone number?
- The practice phone number listed in the NPPES registry for Yijun Fan is (214) 345-5703.
- Does Yijun Fan accept Medicare?
- Yijun Fan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Yijun Fan's NPI active?
- Yes — Yijun Fan's NPI (1336161751) is active in the NPPES registry as of the last update on 2025-11-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.