Michael Naso, M.D.
NPI 1538423488 · Internal Medicine Physician · Shelton, CT
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Naso, M.D. is a Internal Medicine Physician provider in Shelton, CT (NPI 1538423488).
Provider details
- NPI number
- 1538423488
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 63557 (CT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
303 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 140 | $184 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 105 | $127 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 18 | $123 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 15 | $87 |
| Critical Care, First 30-74 Minutes99291 | 14 | $227 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 11 | $139 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-06-26
- Last updated
- 2025-05-15
- Certified
- 2025-05-15
Frequently asked questions
- What is Michael Naso's NPI number?
- Michael Naso's National Provider Identifier (NPI) is 1538423488, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Naso's specialty?
- Michael Naso is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Naso located?
- Michael Naso's practice location on file with NPPES is 110 Commerce Dr, Shelton, CT 06484-6244.
- What is Michael Naso's phone number?
- The practice phone number listed in the NPPES registry for Michael Naso is (203) 929-7331.
- Does Michael Naso accept Medicare?
- Michael Naso is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Naso's NPI active?
- Yes — Michael Naso's NPI (1538423488) is active in the NPPES registry as of the last update on 2025-05-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.