Michael John Naso, M.D.
Internal Medicine Physician · Shelton, CT
Michael John Naso, M.D. is an internal medicine physician with a practice address in Shelton, Connecticut, and NPI 1538423488, issued on Jun 26, 2012. Check the license (Connecticut 63557, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Michael John Naso
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 63557 CT
Self-reported in NPPES; status is on the state search - Practice location
- 110 Commerce Dr, Shelton, CT 06484
- Phone
- (203) 929-7331
- Enumerated
- Jun 26, 2012
- Record last updated
- May 15, 2025
- Fax
- (203) 925-0330
- Medicare enrollment
- Enrolled (PECOS I20190911003102); accepts Medicare assignment
- Medical or professional school
- Temple University School Of Medicine, 2012
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,623 in Connecticut → Look up another NPI →
Also registered at 110 Commerce Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jilian Acevedo-Genao, LCSWClinical Social Worker1083207427
- Susan Ade, APRN, RNGerontology Clinical Nurse Specialist1447447008
- Anna Aranzullo, APRNNurse Practitioner1619623725
- Elizabeth Arbia, D.O.Family Medicine Physician1225329238
- Vanessa Barber, PA-CPhysician Assistant1144884651
- Rachel Bernstein, M.D.Obstetrics & Gynecology Physician1063947372
Verify Michael John Naso in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 63557Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average internal medicine physician in 2024
95 Medicare Part D claims for 45 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 30.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Griffin Faculty Physicians IncDerby, CT
- Rehabilitation Associates IncShelton, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael John Naso among 2,623 internal medicine physician records in Connecticut
Michael John Naso, M.D. is one of 2,623 internal medicine physician records with a practice address in Connecticut. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 67% of them.
- NPI issued2012 · 67% of these records are older, 30% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2012 · median 2004 among the 1,646 with a school on file
- Record last updated2025 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 internal medicine physician records list a practice address in Shelton
They are 10 of the 811 NPPES records with a practice address in Shelton, and 2,623 internal medicine physician records in Connecticut.
All 2,623 in Connecticut → Every provider in Shelton → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Bardia Asgari, MDShelton, CT 064841811938533
- Ana Graciela Azueta-Jimenez, MDShelton, CT 064841083293518
- Piotr Baginski, MDShelton, CT 064841164449906
- Nami Bayan, MDShelton, CT 064841760413538
- Nelson Chao, M.D.Shelton, CT 064841619974896
- John Farens, MDShelton, CT 064841427133354
- Shaun Najarian, DOShelton, CT 064841568824589
- Lenore Snowden Opalak, M.D.Shelton, CT 064841033163605
Common questions
What is Michael John Naso, M.D.'s NPI number?
Michael John Naso, M.D.'s National Provider Identifier (NPI) is 1538423488, issued on Jun 26, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Michael John Naso, M.D. located?
The NPPES record lists a practice address at 110 Commerce Dr, Shelton, CT, 06484. Phone: (203) 929-7331. Providers update this record themselves, so call before visiting.
How can I verify Michael John Naso, M.D.'s license?
NPPES lists Connecticut license number 63557, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael John Naso, M.D. prescribe under Medicare Part D?
In 2024, Michael John Naso, M.D. had 95 Medicare Part D claims for 45 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Michael John Naso, M.D.'s MIPS final score?
The 2023 MIPS final score is 30.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.