DR. JOHN NADAI MD
NPI 1710978614
Internal Medicine in Boston, MA
About Dr. John Nadai Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN NADAI MD (NPI 1710978614) is an individual internal medicine provider in Boston, Massachusetts, licensed in Massachusetts (204982) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 5
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. John Nadai Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show John Nadai reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,360 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 2
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 02114 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.
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
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 Nadai's NPI number?
The NPI number for John Nadai is 1710978614. It was assigned to this individual provider in the NPPES registry on October 31, 2005.
Where is John Nadai located?
John Nadai practices at 50 Staniford St 4th Floor, Boston, MA 02114. The listed phone number is (617) 726-4400.
What is John Nadai's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is John Nadai enrolled in Medicare?
Yes. John Nadai is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for John Nadai's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Nadai reassigns Medicare benefits to 2 organizations: The General Hospital Corporation (Boston, MA) and Massachusetts General Physicians Organization Inc (Boston, MA). 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 John Nadai's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Nadai accept?
Health plans from Taro Health list John Nadai 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 Nadai was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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. John Nadai, MD · NPI 1710978614
Internal Medicine physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since October 31, 2005.
## Identity
- **NPI:** 1710978614 (Entity type: Individual)
- **Enumerated:** October 31, 2005
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 204982 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 50 STANIFORD ST, 4TH FLOOR, Boston, MA 02114-2517
- **Phone:** (617) 726-4400 · **Fax:** (617) 724-6565
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): The General Hospital Corporation (NPI 1023049236, Boston, MA); Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 8, 2007
- **Other identifiers:** Other 204982 (MA); Medicare UPIN H38616; Medicare ID-Type Unspecified A32405 (MA); and 2 more
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Source: [NPI Profile](https://npiprofile.com/npi/1710978614) · Data from the CMS NPPES public registry.