Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Johnson Liu, MD

Individual provider Hematology & Oncology Physician · NPI 1861552903

Dr. Johnson Liu, MD practises Hematology in New York, New York. Qualified in 1986, 40 years ago. Practices with Icahn School of Medicine at Mount Sinai, a 2,791-clinician group, works from 6 locations and accepts Medicare assignment. Licensed in New York.

Years since qualifying
40
Licensed in
NY
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1470 Madison Ave
New York, NY 10029-6542
Phone: (212) 241-6756
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (5)

  • 10 Union Sq E, New York, NY 10003-3314 — (212) 844-8288
  • 325 W 15th St, New York, NY 10011-5903 — (212) 604-6010
  • 1000 10th Ave, New York, NY 10019-1147 — (212) 523-5559
  • 425 W 59th St, New York, NY 10019-8022 — (212) 523-5559
  • 1 Gustave L Levy Pl, New York, NY 10029-6504 — (212) 241-6756

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence 226107 (NY)

Record details

NPI number1861552903
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 11, 2006
Last updated in NPPESNovember 7, 2022
Certification dateNovember 7, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHEMATOLOGY
Also practisesMEDICAL ONCOLOGY
Medical schoolOTHER
Graduated 1986 (40 years in practice)
Group practice Icahn School Of Medicine At Mount Sinai — 2791 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients233
Services billed 438 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $200 2 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Icahn School of Medicine at Mount Sinai

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2791 clinicians in the practice; 12 are shown here.

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