DR. GURSEWAK SINGH OD
NPI 1891476347
Optometrist in Brooklyn, NY
About Dr. Gursewak Singh Od NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GURSEWAK SINGH OD (NPI 1891476347) is an individual optometrist in Brooklyn, New York, licensed in New York (RT009862) and active in the NPI registry since July 2023. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Gursewak Singh Od is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
4Medicare enrollment records show Gursewak Singh reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Brooklyn, NY 11237
- Reassigned Medicare billing, New York enrollment
- 3 clinicians in this Medicare group
Elmhurst, NY 11373
- Reassigned Medicare billing, New York enrollment
- 12 clinicians in this Medicare group
South Richmond Hill, NY 11419
- Reassigned Medicare billing, New York enrollment
- 4 clinicians in this Medicare group
Jamaica, NY 11432
- Reassigned Medicare billing, New York enrollment
- 8 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11237 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Gursewak Singh's NPI number?
The NPI number for Gursewak Singh is 1891476347. It was assigned to this individual provider in the NPPES registry on July 27, 2023.
Where is Gursewak Singh located?
Gursewak Singh practices at 457 Knickerbocker Ave, Brooklyn, NY 11237. The listed phone number is (718) 386-0021.
What is Gursewak Singh's specialty?
The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.
Is Gursewak Singh enrolled in Medicare?
Yes. Gursewak Singh is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Gursewak Singh's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gursewak Singh reassigns Medicare benefits to 4 organizations: Supreme Eyecare Center Corp (Brooklyn, NY), Crystal Eyewear Inc (Elmhurst, NY), Liberty Optical Corp (South Richmond Hill, NY) and Optical 161 Corp (Jamaica, 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 Gursewak Singh's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Gursewak Singh accept?
Health plans from Anthem Blue Cross and Blue Shield, Blue Cross Blue Shield of Wyoming, Blue Cross and Blue Shield of Louisiana, Blue Cross and Blue Shield of Montana and Blue Cross and Blue Shield of Oklahoma and 2 other insurers list Gursewak Singh 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 Gursewak Singh was last updated on July 27, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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. Gursewak Singh, OD · NPI 1891476347
Optometrist provider in Brooklyn, New York. Individual provider, active in the CMS NPPES registry since July 27, 2023.
## Identity
- **NPI:** 1891476347 (Entity type: Individual)
- **Enumerated:** July 27, 2023
- **Primary specialty:** Optometrist · taxonomy 152W00000X
- **State license:** RT009862 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 457 KNICKERBOCKER AVE, Brooklyn, NY 11237-5107
- **Phone:** (718) 386-0021
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Supreme Eyecare Center Corp (NPI 1699493049, Brooklyn, NY); Crystal Eyewear Inc (NPI 1770068645, Elmhurst, NY); Liberty Optical Corp (NPI 1235538596, South Richmond Hill, NY); Optical 161 Corp (NPI 1487958831, Jamaica, NY) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 27, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1891476347) · Data from the CMS NPPES public registry.