Quick answers
- Does Trevor J. Bayliss accept Medicare assignment?
- Yes. Medicare's clinician data says Trevor J. Bayliss 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 Trevor J. Bayliss see?
- In 2024, CMS data shows 775 Original Medicare patients and 2,328 services for Trevor J. Bayliss. This counts Original Medicare only and measures volume, not quality.
- What is Trevor J. Bayliss's NPI number?
- 1982821906. 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 Trevor J. Bayliss, 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 | 775 |
|---|---|
| Services billed to Medicare | 2,328 |
| Different services or procedures | 21 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)566 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)559 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)549 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)180 services
- New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)90 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 blood pressure71%
- High cholesterol66%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)50%
- Arthritis43%
- Ischemic heart disease27%
- Anxiety27%
Hospitals where Trevor J. Bayliss works
Medicare's Facility Affiliation Data lists Trevor J. Bayliss 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.
- Baystate Medical CenterSpringfield, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220077
- Berkshire Medical CenterPittsfield, MA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 220046
- Fairview HospitalGreat Barrington, MA · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 221302
- North Adams Regional Hospital CorporationNorth Adams, MA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 221304
Practice locations
Addresses where Trevor J. Bayliss is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.
- 165 Tor CtPittsfield, MA 01201 (413) 447‑2701
- 165 Tor Ct, Berkshire Hematology/oncology of BmcPittsfield, MA 01201 (413) 443‑6000
- 71 Hospital AveNorth Adams, MA 01247
- 725 N StPittsfield, MA 01201 (413) 447‑2695
- 725 N Street Berkshire Ob/gyn of, MbuPittsfield, MA 01201 (413) 499‑8570
Group practices
Medicare enrollment lists Trevor J. Bayliss as a member of this group (CMS data updated October 2, 2026).
- Berkshire Faculty Services Inc276 clinicians in the group
Specialties
- Hematologyprimary
- Medical Oncologyalso
Other hematologists in Massachusetts
Clinicians with the same Medicare primary specialty in Massachusetts — not a recommendation.
Other clinicians in Berkshire Faculty Services Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Albany Medical College Of Union University |
| Graduation year | 2007 (19 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1982821906 |
| 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