Quick answers
- Which hospitals does Jonathan Alexander work at?
- Medicare's official clinician data lists Jonathan Alexander at 2 hospitals: Danbury Hospital and Norwalk Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Jonathan Alexander see patients?
- Medicare's clinician data lists 1 practice location in Danbury, CT. Call before your visit to confirm the address.
- What is Jonathan Alexander's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty.
- Does Jonathan Alexander accept Medicare assignment?
- Medicare's clinician data says Jonathan Alexander may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- Does Jonathan Alexander offer telehealth?
- Medicare's clinician data says Jonathan Alexander offers telehealth services. Ask the office which visits can be done by video or phone.
- What is Jonathan Alexander's NPI number?
- 1710921754. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Jonathan Alexander works
Medicare's Facility Affiliation Data lists Jonathan Alexander at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Danbury HospitalDanbury, CT · Acute Care Hospital · CCN 070033
- Norwalk HospitalNorwalk, CT · Acute Care Hospital · CCN 070034
Practice locations
Addresses where Jonathan Alexander is enrolled with Medicare (CMS data updated 2026-10-02).
- 111 Osborne StDanbury, CT 06810
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Connecticut →
Other cardiologists in Danbury
Clinicians with the same Medicare primary specialty in Danbury, CT — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Harvard Medical School |
| Graduation year | 1973 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1710921754 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians