Justin Li, DO
NPI 1689289977 · Internal Medicine Physician · Olympia Fields, IL
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Justin Li, DO is a Internal Medicine Physician provider in Olympia Fields, IL (NPI 1689289977).
Provider details
- NPI number
- 1689289977
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 036166721 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
5 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
126 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 | 73 | $133 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 23 | $94 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 16 | $175 |
| Administration of Influenza Virus VaccineG0008 | 14 | $34 |
Typical Medicare-allowed amounts for these services range $34–$175 (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 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 43 | 27 |
| Atorvastatin Calcium | 33 | 25 |
| Losartan Potassium | 20 | 11 |
| Levothyroxine Sodium | 16 | — |
| Lisinopril | 16 | 13 |
| Gabapentin | 15 | 11 |
| Pantoprazole Sodium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,930 across 30 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)
- 820 S Wood St # Mc675Chicago, IL 60612-4325Phone: (312) 996-2933
Registry dates
- Enumerated
- 2020-09-13
- Last updated
- 2025-02-10
- Certified
- 2025-02-10
Frequently asked questions
- What is Justin Li's NPI number?
- Justin Li's National Provider Identifier (NPI) is 1689289977, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Justin Li's specialty?
- Justin Li is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Justin Li located?
- Justin Li's practice location on file with NPPES is 3700 W 203rd St Ste 301, Olympia Fields, IL 60461-1182.
- What is Justin Li's phone number?
- The practice phone number listed in the NPPES registry for Justin Li is (708) 679-2850.
- Does Justin Li accept Medicare?
- Justin Li is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Justin Li's NPI active?
- Yes — Justin Li's NPI (1689289977) is active in the NPPES registry as of the last update on 2025-02-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.