Quick answers
- Where does Catherine Loomis see patients?
- Medicare's clinician data lists 7 practice locations, including Waltham, MA, Chestnut Hill, MA and Bedford, MA. Call before your visit to confirm the address.
- What is Catherine Loomis's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Catherine Loomis accept Medicare assignment?
- Yes. Medicare's clinician data says Catherine Loomis 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 Catherine Loomis?
- (774) 400-4084, as listed in official Medicare / NPI Registry data.
- What is Catherine Loomis's NPI number?
- 1548870249. 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 Catherine Loomis is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 1019 Trapelo RdWaltham, MA 02452 (774) 400‑4084
- 1030 Main StWaltham, MA 02451
- 1210 Boylston StChestnut Hill, MA 02467 (774) 400‑4084
- 154 Great RdBedford, MA 01730 (781) 430‑8161
- 16 Main StStoneham, MA 02180 (781) 279‑4000
Group practices
Medicare enrollment lists Catherine Loomis as a member of this group (CMS data updated 2026-10-02).
- Patriot Urgent Care Professionals PC41 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Waltham
Clinicians with the same Medicare primary specialty in Waltham, MA — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Medical school | Tufts University School Of Medicine |
| Graduation year | 2020 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1548870249 |
| 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