JUSTIN OLDFIELD MD
NPI 1457766438
Family Medicine in New York, NY
About Justin Oldfield Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JUSTIN OLDFIELD MD (NPI 1457766438) is an individual family medicine provider in New York, New York, licensed in New York (287289) and active in the NPI registry since June 2014. He is enrolled in Medicare PECOS, maintains a secondary practice location in New York, and is a graduate of Tufts University School Of Medicine (2014).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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
Justin Oldfield 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
2Medicare enrollment records show Justin Oldfield reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10017
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: One Medical Of Ny PC
- 139 clinicians in this Medicare group
New York, NY 10025
- Reassigned Medicare billing, New York enrollment
- 5,251 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 3
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 10017 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 4
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 Justin Oldfield's NPI number?
The NPI number for Justin Oldfield is 1457766438. It was assigned to this individual provider in the NPPES registry on June 27, 2014.
Where is Justin Oldfield located?
Justin Oldfield practices at 40 E 43rd St Fl 2, New York, NY 10017. The listed phone number is (888) 663-6331.
What is Justin Oldfield's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Justin Oldfield enrolled in Medicare?
Yes. Justin Oldfield 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 Oldfield's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Justin Oldfield reassigns Medicare benefits to 2 organizations: One Medical Of Ny, P.C. (New York, NY) and Montefiore Medical Center (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 Justin Oldfield's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Justin Oldfield was last updated on March 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Justin Oldfield, MD · NPI 1457766438
Family Medicine physician in New York, New York. Individual provider, active in the CMS NPPES registry since June 27, 2014.
## Identity
- **NPI:** 1457766438 (Entity type: Individual)
- **Enumerated:** June 27, 2014
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 287289 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 40 E 43RD ST FL 2, New York, NY 10017-3811
- **Phone:** (888) 663-6331 · **Fax:** (415) 252-7176
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): One Medical Of Ny, P.C. (NPI 1861709487, New York, NY); Montefiore Medical Center (NPI 1760288278, New York, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Tufts University School Of Medicine, class of 2014
## Record status
- **NPPES last updated:** March 15, 2025
---
Source: [NPI Profile](https://npiprofile.com/npi/1457766438) · Data from the CMS NPPES public registry.