Leslie Yang, M.D.
NPI 1366619686 · Gastroenterology Physician · Evanston, IL
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leslie Yang, M.D. is a Gastroenterology Physician provider in Evanston, IL (NPI 1366619686).
Provider details
- NPI number
- 1366619686
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 036115452 (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
18 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
445 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) |
|---|---|---|
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 66 | $133 |
| Moderate Sedation Services Provided By the Same Physician Or Other Qualified Health Care Professional Performing a Gastrointestinal Endoscopic Service That Sedation Supports, Requiring the Presence of an Independent Trained Observer to Assist in the MonitoG0500 | 58 | $7 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 57 | $273 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 57 | $70 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 56 | $102 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 151 | 149 |
| Omeprazole | 104 | 38 |
| Pantoprazole Sodium | 61 | 19 |
| Linaclotidebrand: Linzess | 46 | — |
| Famotidine | 39 | 14 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 19 | 19 |
| Sodium Chloride/Nahco3/Kcl/Peg |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-05-15
- Last updated
- 2021-04-07
- Certified
- 2021-04-07
Frequently asked questions
- What is Leslie Yang's NPI number?
- Leslie Yang's National Provider Identifier (NPI) is 1366619686, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leslie Yang's specialty?
- Leslie Yang is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Leslie Yang located?
- Leslie Yang's practice location on file with NPPES is 1000 Central St Ste 615, Evanston, IL 60201-1779.
- What is Leslie Yang's phone number?
- The practice phone number listed in the NPPES registry for Leslie Yang is (847) 657-1900.
- Does Leslie Yang accept Medicare?
- Leslie Yang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leslie Yang's NPI active?
- Yes — Leslie Yang's NPI (1366619686) is active in the NPPES registry as of the last update on 2021-04-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.