JOHN J WALKER JR. PT
NPI 1720184435
Physical Therapist in Princeton, NJ
About John J Walker Jr. Pt NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN J WALKER JR. PT (NPI 1720184435) is an individual physical therapist in Princeton, New Jersey, licensed in New Jersey (40QA00459800) and active in the NPI registry since September 2006. He is a graduate of Other (1989).
NPPES Registry Identity
Specialties & Licenses
- Diagnose and manage movement dysfunction and enhance physical and functional abilities.
- Restore, maintain, and promote not only optimal physical function but optimal wellness and fitness and optimal quality of life as it relates to movement and health.
- Prevent the onset, symptoms, and progression of impairments, functional limitations, and disabilities that may result from diseases, disorders, conditions, or injuries.
- Treat conditions of the musculoskeletal, neuromuscular, cardiovascular, pulmonary, and/or integumentary systems.
- Address the negative effects attributable to unique personal and environmental factors as they relate to human performance.
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
John J Walker Jr. Pt 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 Reassignment
Medicare enrollment records show John Walker reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Somerset, NJ 08873
- Reassigned Medicare billing, New Jersey enrollment
- 287 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 08540 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.
PRINCETON, NJ 08540
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 Walker's NPI number?
The NPI number for John Walker is 1720184435. It was assigned to this individual provider in the NPPES registry on September 16, 2006.
Where is John Walker located?
John Walker practices at 325 Princeton Ave, Princeton, NJ 08540. The listed phone number is (609) 924-8131.
What is John Walker's specialty?
The primary specialty registered for this NPI is Physical Therapist with taxonomy code 225100000X.
Is John Walker enrolled in Medicare?
Yes. John Walker 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 organization bills Medicare for John Walker's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Walker reassigns Medicare benefits to Orthonj LLC (Somerset, NJ). The 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 Walker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Walker accept?
Health plans from Oscar Health list John Walker 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 John Walker was last updated on January 24, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# John J Walker Jr., PT · NPI 1720184435
Physical Therapist provider in Princeton, New Jersey. Individual provider, active in the CMS NPPES registry since September 16, 2006.
## Identity
- **NPI:** 1720184435 (Entity type: Individual)
- **Enumerated:** September 16, 2006
- **Primary specialty:** Physical Therapist · taxonomy 225100000X
- **State license:** 40QA00459800 (New Jersey)
- **Sole proprietor:** No
## Practice location
- **Address:** 325 PRINCETON AVE, Princeton, NJ 08540-1617
- **Phone:** (609) 924-8131 · **Fax:** (609) 683-7559
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** Orthonj LLC (NPI 1720557432, Somerset, NJ), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1989
## Record status
- **NPPES last updated:** January 24, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1720184435) · Data from the CMS NPPES public registry.