DR. ISAO IWATA M.D.
NPI 1295921773
Internal Medicine - Geriatric Medicine in Plainsboro, NJ
About Dr. Isao Iwata M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ISAO IWATA M.D. (NPI 1295921773) is an individual geriatric medicine provider in Plainsboro, New Jersey, licensed in New Jersey (25MA09972900) and active in the NPI registry since September 2007. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
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. Isao Iwata M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
5Medicare enrollment records show Isao Iwata reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Plainsboro, NJ 08536
- Reassigned Medicare billing, New Jersey enrollment
- 42 clinicians in this Medicare group
Plainsboro, NJ 08536
- Reassigned Medicare billing, New Jersey enrollment
- 249 clinicians in this Medicare group
Hillsborough, NJ 08844
- Reassigned Medicare billing, New Jersey enrollment
- 793 clinicians in this Medicare group
New Brunswick, NJ 08901
- Reassigned Medicare billing, New Jersey enrollment
- 43 clinicians in this Medicare group
Red Bank, NJ 07701
- Reassigned Medicare billing, New Jersey enrollment
- 2,844 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 15
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 08536 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 3
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PLAINSBORO, NJ 08536
PLAINSBORO, NJ 08536
PLAINSBORO, NJ 08536
PLAINSBORO, NJ 08536
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 Isao Iwata's NPI number?
The NPI number for Isao Iwata is 1295921773. It was assigned to this individual provider in the NPPES registry on September 19, 2007.
Where is Isao Iwata located?
Isao Iwata practices at 5 Plainsboro Rd Ste 300, Plainsboro, NJ 08536. The listed phone number is (609) 853-7272.
What is Isao Iwata's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Geriatric Medicine, with taxonomy code 207RG0300X.
Is Isao Iwata enrolled in Medicare?
Yes. Isao Iwata is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Isao Iwata's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Isao Iwata reassigns Medicare benefits to 5 organizations: Princeton Healthcare Provider Group LLC (Plainsboro, NJ), Princeton Healthcare Affiliated Physicians PC (Plainsboro, NJ), Clinical Health Care Associates Of New Jersey, PC (Hillsborough, NJ), Rutgers Health-Rwj Primary Medicine Group (New Brunswick, NJ) and Hackensack Meridian Health Medical Group - Specialty Care PC (Red Bank, NJ). 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 Isao Iwata's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Isao Iwata accept?
Health plans from Oscar Health list Isao Iwata 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 Isao Iwata was last updated on September 30, 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.