Quick answers
- Where does Mark M. Whelan see patients?
- Medicare's clinician data lists 2 practice locations, including Hamden, CT. Call before your visit to confirm the address.
- What is Mark M. Whelan's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Mark M. Whelan accept Medicare assignment?
- Yes. Medicare's clinician data says Mark M. Whelan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Mark M. Whelan?
- (203) 407-2500, as listed in official Medicare / NPI Registry data.
- What is Mark M. Whelan's NPI number?
- 1932180460. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Mark M. Whelan is enrolled with Medicare (CMS data updated 2026-10-02).
- 2200 Whitney AveHamden, CT 06518
- 2200 Whitney Ave, Suite 180Hamden, CT 06518 (203) 407‑2500
Group practices
Medicare enrollment lists Mark M. Whelan as a member of this group (CMS data updated 2026-10-02).
- Heartcare Associates of Connecticut, LLC7 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Hamden
Clinicians with the same Medicare primary specialty in Hamden, CT — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 1981 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1932180460 |
| 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
- 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