DR. M AMIN ARNAOUT MD
NPI 1760473300
Internal Medicine - Nephrology in Charlestown, MA
About Dr. M Amin Arnaout Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. M AMIN ARNAOUT MD (NPI 1760473300) is an individual nephrology provider in Charlestown, Massachusetts, licensed in Massachusetts (42570) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS and is a graduate of Other (1974).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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
Dr. M Amin Arnaout 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
3Medicare enrollment records show M Arnaout reassigns Medicare billing to 3 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
- 6,360 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 clinicians in this Medicare group
Norfolk, MA 02056
- Reassigned Medicare billing, Massachusetts enrollment
- 18 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
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 02129 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 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHARLESTOWN, MA 02129
CHARLESTOWN, MA 02129
CHARLESTOWN, MA 02129
CHARLESTOWN, MA 02129
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 M Arnaout's NPI number?
The NPI number for M Arnaout is 1760473300. It was assigned to this individual provider in the NPPES registry on November 2, 2005.
Where is M Arnaout located?
M Arnaout practices at 149 13th St 149 8, Charlestown, MA 02129. The listed phone number is (617) 726-5663.
What is M Arnaout's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is M Arnaout enrolled in Medicare?
Yes. M Arnaout 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 M Arnaout's services?
According to the CMS Revalidation Reassignment List (October 2026 release), M Arnaout reassigns Medicare benefits to 3 organizations: Massachusetts General Physicians Organization Inc (Boston, MA), The General Hospital Corporation (Boston, MA) and New England Nephrology Associates (Norfolk, 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 M Arnaout's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does M Arnaout accept?
Health plans from Taro Health list M Arnaout 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 M Arnaout was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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. M Amin Arnaout, MD · NPI 1760473300
Nephrology physician in Charlestown, Massachusetts. Individual provider, active in the CMS NPPES registry since November 2, 2005.
## Identity
- **NPI:** 1760473300 (Entity type: Individual)
- **Enumerated:** November 2, 2005
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **State license:** 42570 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 149 13TH ST, 149 8, Charlestown, MA 02129-2020
- **Phone:** (617) 726-5663 · **Fax:** (617) 726-5669
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA); The General Hospital Corporation (NPI 1023049236, Boston, MA); New England Nephrology Associates (NPI 1033261276, Norfolk, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1974
## Record status
- **NPPES last updated:** July 13, 2026
- **Other identifiers:** Medicaid 0193038 (MA); Other 760771 (MA); Other M09662 (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1760473300) · Data from the CMS NPPES public registry.