DR. MICHAEL JOHN NASO M.D.
NPI 1538423488
Internal Medicine in Shelton, CT
About Dr. Michael John Naso M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MICHAEL JOHN NASO M.D. (NPI 1538423488) is an individual internal medicine provider in Shelton, Connecticut, licensed in Connecticut (63557) and active in the NPI registry since June 2012. He is enrolled in Medicare PECOS and is a graduate of Temple University School Of Medicine (2012).
NPPES Registry Identity
Specialties & Licenses 2
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. Michael John Naso M.d. 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
4Medicare enrollment records show Michael Naso reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Derby, CT 06418
- Reassigned Medicare billing, Connecticut enrollment
- 190 clinicians in this Medicare group
Waterbury, CT 06708
- Reassigned Medicare billing, Connecticut enrollment
- 125 clinicians in this Medicare group
Bristol, CT 06010
- Reassigned Medicare billing, Connecticut enrollment
- 222 clinicians in this Medicare group
Hartford, CT 06106
- Reassigned Medicare billing, Connecticut enrollment
- 1,921 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 6
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 06484 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims 2
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 20
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 Michael Naso's NPI number?
The NPI number for Michael Naso is 1538423488. It was assigned to this individual provider in the NPPES registry on June 26, 2012.
Where is Michael Naso located?
Michael Naso practices at 110 Commerce Dr, Shelton, CT 06484. The listed phone number is (203) 929-7331.
What is Michael Naso's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Michael Naso enrolled in Medicare?
Yes. Michael Naso 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 Michael Naso's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Naso reassigns Medicare benefits to 4 organizations: Griffin Faculty Physicians, Inc. (Derby, CT), Emergency Physicians Of Connecticut PC (Waterbury, CT), Bristol Hospital Multi Specialty Group, Inc (Bristol, CT) and Hartford Healthcare Medical Group Specialists, PLLC (Hartford, CT). 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 Michael Naso's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Michael Naso accept?
Health plans from Anthem Blue Cross and Blue Shield list Michael Naso 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 Michael Naso was last updated on May 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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. Michael John Naso, M.D. · NPI 1538423488
Internal Medicine physician in Shelton, Connecticut. Individual provider, active in the CMS NPPES registry since June 26, 2012.
## Identity
- **NPI:** 1538423488 (Entity type: Individual)
- **Enumerated:** June 26, 2012
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 63557 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 110 COMMERCE DR, Shelton, CT 06484-6244
- **Phone:** (203) 929-7331 · **Fax:** (203) 925-0330
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Griffin Faculty Physicians, Inc. (NPI 1598755605, Derby, CT); Emergency Physicians Of Connecticut PC (NPI 1902278906, Waterbury, CT); Bristol Hospital Multi Specialty Group, Inc (NPI 1649265679, Bristol, CT); Hartford Healthcare Medical Group Specialists, PLLC (NPI 1023584216, Hartford, CT) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Temple University School Of Medicine, class of 2012
## Record status
- **NPPES last updated:** May 15, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1538423488) · Data from the CMS NPPES public registry.