DR. NICHOLAS NING-GUANG GUAN MD
NPI 1558503334
Psychiatry & Neurology - Psychiatry in New York, NY
About Dr. Nicholas Ning-guang Guan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. NICHOLAS NING-GUANG GUAN MD (NPI 1558503334) is an individual psychiatry provider in New York, New York, licensed in New York (252258) and active in the NPI registry since March 2009. He is enrolled in Medicare PECOS and is a graduate of Other (1982).
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. Nicholas Ning-guang Guan 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.
Medicare Billing Reassignments
3Medicare enrollment records show Nicholas Guan reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10002
- Reassigned Medicare billing, New York enrollment
- 2 clinicians in this Medicare group
Brooklyn, NY 11249
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Valera Medical PC
- 315 clinicians in this Medicare group
New York, NY 10013
- Reassigned Medicare billing, New York enrollment
- 284 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10009 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Nicholas Guan's NPI number?
The NPI number for Nicholas Guan is 1558503334. It was assigned to this individual provider in the NPPES registry on March 25, 2009.
Where is Nicholas Guan located?
Nicholas Guan practices at 391 E 10th St Unit E, New York, NY 10009. The listed phone number is (212) 961-7446.
What is Nicholas Guan's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is Nicholas Guan enrolled in Medicare?
Yes. Nicholas Guan 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 Nicholas Guan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nicholas Guan reassigns Medicare benefits to 3 organizations: Lawrence Y. Liang Medical PC (New York, NY), Valera Medical, P.C. (Brooklyn, NY) and Chinatown True Care Medical PLLC (New York, NY). 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 Nicholas Guan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Nicholas Guan accept?
Health plans from Oscar Health list Nicholas Guan 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.
When was this NPI record last updated?
The NPPES record for Nicholas Guan was last updated on March 25, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.
# Dr. Nicholas Ning-Guang Guan, MD · NPI 1558503334
Psychiatry physician in New York, New York. Individual provider, active in the CMS NPPES registry since March 25, 2009.
## Identity
- **NPI:** 1558503334 (Entity type: Individual)
- **Enumerated:** March 25, 2009
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** 252258 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 391 E 10TH ST, UNIT E, New York, NY 10009-4770
- **Phone:** (212) 961-7446
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Lawrence Y. Liang Medical PC (NPI 1225329055, New York, NY); Valera Medical, P.C. (NPI 1437782349, Brooklyn, NY); Chinatown True Care Medical PLLC (NPI 1912567884, New York, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1982
## Record status
- **NPPES last updated:** March 25, 2009
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Source: [NPI Profile](https://npiprofile.com/npi/1558503334) · Data from the CMS NPPES public registry.