DR. JUSTIN K TO MD
NPI 1457589863
Obstetrics & Gynecology in Bronx, NY
About Dr. Justin K To Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JUSTIN K TO MD (NPI 1457589863) is an individual obstetrics & gynecology provider in Bronx, New York, licensed in New York (253521) and active in the NPI registry since June 2009. He is enrolled in Medicare PECOS, is affiliated with Maimonides Medical Center, and is a graduate of State University Of New York At Stony Brook, School Of Medicine (2005).
NPPES Registry Identity
Specialties & Licenses
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. Justin K To 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
6Medicare enrollment records show Justin To reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Bronx, NY 10467
- Reassigned Medicare billing, New York enrollment
- 5,251 clinicians in this Medicare group
Flushing, NY 11355
- Reassigned Medicare billing, New York enrollment
- 327 clinicians in this Medicare group
Jamaica, NY 11418
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Tjh Medical Services PC
- 497 clinicians in this Medicare group
Jamaica, NY 11418
- Reassigned Medicare billing, New York enrollment
- 738 clinicians in this Medicare group
Brooklyn, NY 11219
- Reassigned Medicare billing, New York enrollment
- 1,177 clinicians in this Medicare group
Brooklyn, NY 11220
- Reassigned Medicare billing, New York enrollment
- 76 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Maimonides Medical Center
Acute Care Hospitals · Brooklyn, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10467 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BRONX, NY 10467
BRONX, NY 10467
BRONX, NY 10467
BRONX, NY 10467
BRONX, NY 10467
BRONX, NY 10467
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 Justin To's NPI number?
The NPI number for Justin To is 1457589863. It was assigned to this individual provider in the NPPES registry on June 24, 2009.
Where is Justin To located?
Justin To practices at 3332 Rochambeau Ave Ob/Gyn Department, Bronx, NY 10467. The listed phone number is (718) 920-6311.
What is Justin To's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Justin To enrolled in Medicare?
Yes. Justin To 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 Justin To's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Justin To reassigns Medicare benefits to 6 organizations: Montefiore Medical Center (Bronx, NY), Flushing Hospital & Medical Center (Flushing, NY), Tjh Medical Services, P.C. (Jamaica, NY), Jamaica Hospital (Jamaica, NY), Maimonides Faculty Practice Plan (Brooklyn, NY) and 1 more organization, listed in the Medicare section above. 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 Justin To's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Justin To affiliated with any hospitals?
According to CMS data, Justin To is affiliated with Maimonides Medical Center.
When was this NPI record last updated?
The NPPES record for Justin To was last updated on January 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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. Justin K To, MD · NPI 1457589863
Obstetrics & Gynecology physician in Bronx, New York. Individual provider, active in the CMS NPPES registry since June 24, 2009.
## Identity
- **NPI:** 1457589863 (Entity type: Individual)
- **Enumerated:** June 24, 2009
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 253521 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 3332 ROCHAMBEAU AVE, OB/GYN DEPARTMENT, Bronx, NY 10467-2836
- **Phone:** (718) 920-6311
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Montefiore Medical Center (NPI 1063525152, Bronx, NY); Flushing Hospital & Medical Center (NPI 1548217763, Flushing, NY); Tjh Medical Services, P.C. (NPI 1184670465, Jamaica, NY); Jamaica Hospital (NPI 1477505220, Jamaica, NY); Maimonides Faculty Practice Plan (NPI 1053344846, Brooklyn, NY); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** State University Of New York At Stony Brook, School Of Medicine, class of 2005
## Record status
- **NPPES last updated:** January 29, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1457589863) · Data from the CMS NPPES public registry.