Robert Liem, MD
NPI 1548238926 · Pediatric Hematology & Oncology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Liem, MD is a Pediatric Hematology & Oncology Physician provider in Chicago, IL (NPI 1548238926).
Provider details
- NPI number
- 1548238926
- Entity type
- Individual
- Primary specialty
- Pediatric Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036101610 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$659 across 4 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
Registry dates
- Enumerated
- 2006-03-10
- Last updated
- 2025-08-29
- Certified
- 2025-08-29
Frequently asked questions
- What is Robert Liem's NPI number?
- Robert Liem's National Provider Identifier (NPI) is 1548238926, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Liem's specialty?
- Robert Liem is listed in the NPPES registry with a primary specialty of Pediatric Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Liem located?
- Robert Liem's practice location on file with NPPES is 225 E Chicago Ave, Chicago, IL 60611-2991.
- What is Robert Liem's phone number?
- The practice phone number listed in the NPPES registry for Robert Liem is (800) 543-7362.
- Does Robert Liem accept Medicare?
- Robert Liem is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Liem's NPI active?
- Yes — Robert Liem's NPI (1548238926) is active in the NPPES registry as of the last update on 2025-08-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.