Yien Li, M.D.
NPI 1861768590 · Hospitalist Physician · Lake Forest, IL
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Yien Li, M.D. is a Hospitalist Physician provider in Lake Forest, IL (NPI 1861768590).
Provider details
- NPI number
- 1861768590
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036.135978 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
14 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
902 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 578 | $124 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 177 | $119 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 55 | $182 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 47 | $81 |
| Prolonged Hospital Inpatient Or Observation Care Evaluation and Management Service(s) Beyond the Total Time for the Primary Service (when the Primary Service Has Been Selected Using Time on the Date of the Primary Service); Each Additional 15 Minutes By ThG0316 | 30 | $32 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 25 | 14 |
| Metoprolol Succinate | 18 | 11 |
| Pantoprazole Sodium | 18 | — |
| Bumetanide | 17 | — |
| Cephalexin | 15 | 14 |
| Atorvastatin Calcium | 12 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 660 N Westmoreland RdLake Forest, IL 60045-1659Phone: (847) 234-5600Fax: (847) 535-7203
Registry dates
- Enumerated
- 2012-03-27
- Last updated
- 2020-03-17
- Certified
- 2020-03-17
Frequently asked questions
- What is Yien Li's NPI number?
- Yien Li's National Provider Identifier (NPI) is 1861768590, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Yien Li's specialty?
- Yien Li is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Yien Li located?
- Yien Li's practice location on file with NPPES is 1000 N Westmoreland Rd, Lake Forest, IL 60045-1658.
- What is Yien Li's phone number?
- The practice phone number listed in the NPPES registry for Yien Li is (847) 234-5600.
- Does Yien Li accept Medicare?
- Yien Li is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Yien Li's NPI active?
- Yes — Yien Li's NPI (1861768590) is active in the NPPES registry as of the last update on 2020-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.