Sijun Yang, MD
NPI 1962653568 · Internal Medicine Physician · Bolingbrook, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sijun Yang, MD is a Internal Medicine Physician provider in Bolingbrook, IL (NPI 1962653568).
Provider details
- NPI number
- 1962653568
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036-122231 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
783 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 527 | $132 |
| Advance Care Planning, First 30 Minutes99497 | 71 | $84 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 66 | $133 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 66 | $19 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 23 | $92 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 49 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 306 | 97 |
| Amlodipine Besylate | 241 | 73 |
| Losartan Potassium | 181 | 52 |
| Metformin Hcl | 131 | 41 |
| Simvastatin | 81 | 28 |
| Lisinopril | 79 | 21 |
| Levothyroxine Sodium | 71 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-10-02
- Last updated
- 2021-12-20
- Certified
- 2021-01-11
Frequently asked questions
- What is Sijun Yang's NPI number?
- Sijun Yang's National Provider Identifier (NPI) is 1962653568, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sijun Yang's specialty?
- Sijun Yang is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sijun Yang located?
- Sijun Yang's practice location on file with NPPES is 454 W Boughton Rd Ste C, Bolingbrook, IL 60440-1378.
- What is Sijun Yang's phone number?
- The practice phone number listed in the NPPES registry for Sijun Yang is (630) 778-8571.
- Does Sijun Yang accept Medicare?
- Sijun Yang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sijun Yang's NPI active?
- Yes — Sijun Yang's NPI (1962653568) is active in the NPPES registry as of the last update on 2021-12-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.