Quick answers
- Does Joseph D. Bertrand Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says Joseph D. Bertrand Jr. 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 Joseph D. Bertrand Jr. see?
- In 2024, CMS data shows 73 Original Medicare patients and 73 services for Joseph D. Bertrand Jr.. This counts Original Medicare only and measures volume, not quality.
- What is Joseph D. Bertrand Jr.'s NPI number?
- 1437428935. 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 Joseph D. Bertrand Jr., 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 | 73 |
|---|---|
| Services billed to Medicare | 73 |
| Different services or procedures | 4 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Anesthesia for other procedure on large bowel using an endoscope (00811)34 services
- Anesthesia for exam of colon using an endoscope (00812)19 services
- Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)17 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 pressure62%
- Arthritis38%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)22%
- Diabetes18%
- Anxiety15%
Practice locations
Addresses where Joseph D. Bertrand Jr. is enrolled with Medicare (CMS data updated October 2, 2026).
- 105 Erdman WayLeominster, MA 01453 (617) 754‑0800
- 45 A Discovery WayActon, MA 01720 (617) 936‑7683
- 91 Montvale Ave, Suite 103Stoneham, MA 02180 (781) 835‑2111
Group practices
Medicare enrollment lists Joseph D. Bertrand Jr. as a member of these groups (CMS data updated October 2, 2026).
- Gbaa Holdings PLLC21 clinicians in the group
- Dha Endoscopy LLC19 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), Massachusetts →
Other nurse anesthetists in Leominster
Clinicians with the same Medicare primary specialty in Leominster, MA — not a recommendation.
Other clinicians in Gbaa Holdings PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1437428935 |
| 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 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