Joseph J. Guardino, MD
Internal Medicine Physician · Manchester, CT
Joseph J. Guardino, MD is an internal medicine physician with a practice address in Manchester, Connecticut, and NPI 1295746667, issued on Aug 11, 2006. Check the license (Connecticut 026583, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Joseph J. Guardino
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 026583 CT
Self-reported in NPPES; status is on the state search - Practice location
- 945 Main St, Manchester, CT 06040
- Phone
- (860) 646-1900
- Enumerated
- Aug 11, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (860) 645-3441
- Medicare enrollment
- Enrolled (PECOS I20100324001043); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 945 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Joseph J. Guardino in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 026583Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.4 times the Medicare Part D claims of the average internal medicine physician in 2024
10,851 Medicare Part D claims for 1,101 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 443 claims were for opioids.
Most prescribed
- Atorvastatin Calcium706 claims
- Amlodipine Besylate482 claims
- Alprazolam357 claims
- Metoprolol Succinate350 claims
- Levothyroxine Sodium324 claims
- Metformin Hcl317 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.
Bills Medicare through one group practice
- Prohealth Physicians PCWinsted, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
29 internal medicine physician records list a practice address in Manchester
They are 29 of the 2,184 NPPES records with a practice address in Manchester, and 2,623 internal medicine physician records in Connecticut.
All 29 in Manchester → All 2,623 in Connecticut → Every provider in Manchester →
Other internal medicine physician records in Connecticut
- Hoda Abdel Salam, M.D.New Britain, CT1144509316
- Gada Abdelhafiz, MDNew London, CT1467649558
- Racha Abi Melhem, MDDerby, CT1902471352
- Gerard Abidor, D.O.Bridgeport, CT1518014539
- Lilyan AbrahamFarmington, CT1447693254
- Richard Abraham, M.D.Canton, CT1023044252
- Odaliz Abreu-Lanfranco, MDNew Haven, CT1538276134
- Kenneth Abriola, MDGlastonbury, CT1083693022
- Florentino Abueg, MDSouthbury, CT1649372558
- Nila Aburto, MDStamford, CT1396325718
Common questions
What is Joseph J. Guardino, MD's NPI number?
Joseph J. Guardino, MD's National Provider Identifier (NPI) is 1295746667, issued on Aug 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joseph J. Guardino, MD located?
The NPPES record lists a practice address at 945 Main St, Manchester, CT, 06040. Phone: (860) 646-1900. Providers update this record themselves, so call before visiting.
How can I verify Joseph J. Guardino, MD's license?
NPPES lists Connecticut license number 026583, 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 Joseph J. Guardino, MD prescribe under Medicare Part D?
In 2024, Joseph J. Guardino, MD had 10,851 Medicare Part D claims for 1,101 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.