Quick answers
- Does Richard A. Zirin accept Medicare assignment?
- Yes. Medicare's clinician data says Richard A. Zirin accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Richard A. Zirin see?
- In 2024, CMS data shows 219 Original Medicare patients and 286 services for Richard A. Zirin. This counts Original Medicare only and measures volume, not quality.
- What is Richard A. Zirin's NPI number?
- 1548267883. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Richard A. Zirin, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 219 |
|---|---|
| Services billed to Medicare | 286 |
| Different services or procedures | 26 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)47 services
- Colorectal cancer screening; colonoscopy on individual at high risk (G0105)45 services
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)44 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)27 services
- Biopsy of large bowel using a flexible endoscope (45380)24 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure70%
- Arthritis43%
- Ischemic heart disease36%
- Anxiety34%
- COPD24%
Hospitals where Richard A. Zirin works
Medicare's Facility Affiliation Data lists Richard A. Zirin at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Anna Jaques HospitalNewburyport, MA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 220029
Practice locations
Addresses where Richard A. Zirin is enrolled with Medicare (CMS data updated October 2, 2026).
- 255 Low St, Suite 2Newburyport, MA 01950 (978) 465‑4622
Group practices
Medicare enrollment lists Richard A. Zirin as a member of this group (CMS data updated October 2, 2026).
- Seacoast Affiliated Group Practice Inc50 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Massachusetts
Clinicians with the same Medicare primary specialty in Massachusetts — not a recommendation.
Other clinicians in Seacoast Affiliated Group Practice Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Boston University School Of Medicine |
| Graduation year | 1978 (48 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1548267883 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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