DR. JOHN W LIANG M.D.
NPI 1720387764
Psychiatry & Neurology - Neurocritical Care in New York, NY
About Dr. John W Liang M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN W LIANG M.D. (NPI 1720387764) is an individual neurocritical care provider in New York, New York, licensed in New Jersey (25MA11275100) and active in the NPI registry since March 2011. He is enrolled in Medicare PECOS, is affiliated with Chilton Medical Center, and is a graduate of Other (2011).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
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. John W Liang M.d. 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.
Medicare Billing Reassignments
5Medicare enrollment records show John Liang reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10029
- Reassigned Medicare billing, New York enrollment
- Also billed through NPI 1497029581 (New York)
- 329 clinicians in this Medicare group
Morristown, NJ 07960
- Reassigned Medicare billing, New Jersey enrollment
- 1,699 clinicians in this Medicare group
Piscataway, NJ 08854
- Reassigned Medicare billing, New Jersey enrollment
- 641 clinicians in this Medicare group
Stamford, CT 06907
- Reassigned Medicare billing, Connecticut enrollment
- 496 clinicians in this Medicare group
Wilmington, DE 19803
- Reassigned Medicare billing, Delaware enrollment
- Also billed through NPI 1679727028 (Delaware), NPI 1245474329 (Delaware), NPI 1457593949 (Delaware)
- 1,531 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Chilton Medical Center
Acute Care Hospitals · Pompton Plains, NJNewton Medical Center
Acute Care Hospitals · Newton, NJHackettstown Medical Center
Acute Care Hospitals · Hackettstown, NJMount Sinai St Luke's Roosevelt Hospital
Acute Care Hospitals · New York, NYOther Providers at the Same Location NPPES 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEW YORK, NY 10019
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 John Liang's NPI number?
The NPI number for John Liang is 1720387764. It was assigned to this individual provider in the NPPES registry on March 16, 2011.
Where is John Liang located?
John Liang practices at 1000 10th Ave Ste 10G, New York, NY 10019. The listed phone number is (212) 523-2183.
What is John Liang's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurocritical Care, with taxonomy code 2084A2900X.
Is John Liang enrolled in Medicare?
Yes. John Liang 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 organizations bill Medicare for John Liang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Liang reassigns Medicare benefits to 5 organizations: Icahn School Of Medicine At Mount Sinai (New York, NY), Practice Associates Medical Group (Morristown, NJ), Rutgers Health-Rwj Scleroderma Program (Piscataway, NJ), Stamford Health Medical Group Inc (Stamford, CT) and Christiana Care Health Services, Inc (Wilmington, DE). Each 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 John Liang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Liang accept?
Health plans from AmeriHealth Caritas Next and Oscar Health list John Liang as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is John Liang affiliated with any hospitals?
According to CMS data, John Liang is affiliated with Chilton Medical Center, Newton Medical Center, Hackettstown Medical Center and Mount Sinai St Luke's Roosevelt Hospital.
When was this NPI record last updated?
The NPPES record for John Liang was last updated on April 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months 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.
# Dr. John W Liang, M.D. · NPI 1720387764
Neurocritical Care physician in New York, New York. Individual provider, active in the CMS NPPES registry since March 16, 2011.
## Identity
- **NPI:** 1720387764 (Entity type: Individual)
- **Enumerated:** March 16, 2011
- **Primary specialty:** Psychiatry & Neurology - Neurocritical Care · taxonomy 2084A2900X
- **State license:** 25MA11275100 (New Jersey)
- **Sole proprietor:** No
## Practice location
- **Address:** 1000 10TH AVE STE 10G, New York, NY 10019-1147
- **Phone:** (212) 523-2183
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 5 organizations under Medicare reassignment (form CMS-855R): Icahn School Of Medicine At Mount Sinai (NPI 1538407176, New York, NY); Practice Associates Medical Group (NPI 1427016385, Morristown, NJ); Rutgers Health-Rwj Scleroderma Program (NPI 1316222664, Piscataway, NJ); Stamford Health Medical Group Inc (NPI 1154633980, Stamford, CT); Christiana Care Health Services, Inc (NPI 1619951068, Wilmington, DE) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2011
## Record status
- **NPPES last updated:** April 15, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1720387764) · Data from the CMS NPPES public registry.