Joy Liu
NPI 1558742072 · Gastroenterology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joy Liu is a Gastroenterology Physician provider in Chicago, IL (NPI 1558742072).
Provider details
- NPI number
- 1558742072
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- 263854 (MA)
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 tenure25% of score
11 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
403 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) |
|---|---|---|
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 70 | $272 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 49 | $102 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 37 | $116 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 31 | $134 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 28 | $120 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Linaclotidebrand: Linzess | 124 | 40 |
| Sodium Chloride/Nahco3/Kcl/Pegbrand: Peg 3350-Electrolyte | 88 | 87 |
| Omeprazole | 85 | 36 |
| Ondansetronbrand: Ondansetron Odt | 62 | 24 |
| Pantoprazole Sodium | 56 | 17 |
| Prucalopride Succinatebrand: Motegrity | 55 | 13 |
| Sodium, Potassium,mag Sulfates |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$7,021 across 10 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 (3)
- 676 N Saint Clair St Ste 1400Chicago, IL 60611Phone: (312) 695-4077
- 330 Brookline AveBoston, MA 02215-5400Phone: (617) 667-7000
- 330 Brookline AveBoston, MA 02215-5400Phone: (617) 667-7000
Registry dates
- Enumerated
- 2015-06-10
- Last updated
- 2022-10-04
- Certified
- 2022-10-04
Frequently asked questions
- What is Joy Liu's NPI number?
- Joy Liu's National Provider Identifier (NPI) is 1558742072, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joy Liu's specialty?
- Joy Liu is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Joy Liu located?
- Joy Liu's practice location on file with NPPES is 259 E Erie St Ste 1600, Chicago, IL 60611-3111.
- What is Joy Liu's phone number?
- The practice phone number listed in the NPPES registry for Joy Liu is (312) 695-5620.
- Does Joy Liu accept Medicare?
- Joy Liu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joy Liu's NPI active?
- Yes — Joy Liu's NPI (1558742072) is active in the NPPES registry as of the last update on 2022-10-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.