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DR. WILLIAM LIAO MD
NPI 1023673589
Anesthesiology in New York, NY

Active since May 09, 2019PECOS EnrolledAccepts Medicare Assignment
240 E 38TH ST, NEW YORK, NY 10016(310) 561-5418 Get Directions Write a Review

NPPES record last updated: August 8, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 8, 2024, Jul 23, 2024, Jun 19, 2024 and 1 more (4 updates tracked since 2019).

About Dr. William Liao Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. WILLIAM LIAO MD (NPI 1023673589) is an individual anesthesiology provider in New York, New York, licensed in New York (322346) and active in the NPI registry since May 2019. He is enrolled in Medicare PECOS, is affiliated with Nyu Langone Hospitals, and is a graduate of Other (2019).

NPPES Registry Identity

NPI1023673589
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameDR. WILLIAM LIAOCredential: MD
Location Address240 E 38TH STNew York, NY 10016-2708
Mailing Address240 E 38th StNew York, NY 10016-2708 · (310) 561-5418
Phone(310) 561-5418
Sole ProprietorYes
Medical School CMSOtherGraduated 2019
Enumeration DateMay 9, 2019
Last NPPES UpdateAugust 8, 20244 updates tracked since enumeration
NPPES CertifiedAugust 8, 2024
✔ NPI 1023673589 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in NY · 322346
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
240 E 38TH ST, New York, NY 10016
Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. William Liao Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6507193448
PECOS Enrollment IDI20240606002910
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show William Liao reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

New York University
0.1 mi
Endocrinology, Diabetes & Metabolism
345 E 37TH ST, SUITE 313
New York, NY 10016
  • Reassigned Medicare billing, New York enrollment
  • 1,074 clinicians in this Medicare group
NPI 1487765772 (212) 263-2824

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Nyu Langone Hospitals

Acute Care Hospitals · New York, NY
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330214
Location550 First AvenueNew York, NY 10016 · New York County
Emergency services Birthing friendly

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MR. NEXHIP CUCA OTR/L
Occupational Therapist
240 E 38TH ST
NEW YORK, NY 10016
New York County (212) 263-6099
NYU
General Acute Care Hospital
240 E 38TH ST
NEW YORK, NY 10016
New York County (212) 263-6110
MADDIE AUBUCHON
Physical Therapist
240 E 38TH ST
NEW YORK, NY 10016
New York County (212) 263-6059
NICOLE GERBUSH
Physical Therapist
240 E 38TH ST
NEW YORK, NY 10016
New York County (646) 501-7597
CEN ZHANG MD
Psychiatry & Neurology (Vascular Neurology)
240 E 38TH ST, 20TH FL
NEW YORK, NY 10016
New York County (212) 263-7744
ELIZABETH JEANNE MARTORI OTL
Occupational Therapist
240 E 38TH ST
NEW YORK, NY 10016
New York County (212) 263-3949
SONIA HON
Speech-Language Pathologist
240 E 38TH ST
NEW YORK, NY 10016
New York County (347) 741-1243
DR. AASMA SHAUKAT MD
Internal Medicine (Gastroenterology)
240 E 38TH ST
NEW YORK, NY 10016
New York County (212) 263-3095

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Liao's NPI number?

The NPI number for William Liao is 1023673589. It was assigned to this individual provider in the NPPES registry on May 9, 2019.

Where is William Liao located?

William Liao practices at 240 E 38th St, New York, NY 10016. The listed phone number is (310) 561-5418.

What is William Liao's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is William Liao enrolled in Medicare?

Yes. William Liao is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for William Liao's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Liao reassigns Medicare benefits to New York University (New York, NY). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Liao's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is William Liao affiliated with any hospitals?

According to CMS data, William Liao is affiliated with Nyu Langone Hospitals.

When was this NPI record last updated?

The NPPES record for William Liao was last updated on August 8, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.