Who owns Mass General Waltham Outpatient Surgery Center?
Surgery center · Ambulatory surgery center · 40 2nd Ave · Waltham, MA · 02451
Example: fully unlocked, as a paid account sees itOverview
Mass General Waltham Outpatient Surgery Center is an ambulatory surgery center in Waltham, Massachusetts, operated by Mass General Brigham. Middlesex County has 19 hospitals, 74 nursing homes and 57 urgent care centers.
Ownership
Mass General Waltham Outpatient Surgery Center is operated by Mass General Brigham.
- Operator
- Mass General Brigham
- Owner group
- Mass General Brigham
- Main physician practice here
- The General Hospital · practices at the center; not an owner on record
- Source
Ownership history
Every dated change of operator and owner for Mass General Waltham Outpatient Surgery Center, with the source for each.
Full ownership tree of Mass General Brigham
Every entity between this facility and its ultimate owner, with ownership percentages and dates.
Physicians
104 clinicians give this building as their Medicare practice address, 95 of them billing in hospitals and surgery centers.
| Specialty | Clinicians | Hospital and surgery center services | All Medicare services |
|---|---|---|---|
| Hematology/Oncology | 24 | 15,118 | 22,194 |
| Nurse Practitioner | 19 | 5,343 | 6,739 |
| Medical Oncology | 12 | 8,324 | 11,668 |
| Rheumatology | 8 | 2,454 | 6,005 |
| Internal Medicine | 4 | 3,056 | 3,509 |
| Radiation Oncology | 4 | 6,665 | 7,805 |
| Surgical Oncology | 4 | 931 | 1,514 |
| Infectious Disease | 3 | 1,003 | 1,313 |
| Pulmonary Disease | 3 | 1,841 | 2,325 |
| Neurology | 2 | 449 | 667 |
| Endocrinology | 2 | 254 | 376 |
| Psychiatry | 1 | 248 | 297 |
CMS lists one practice address per clinician, so these are the clinicians who give this building as theirs, with their traditional Medicare services in 2026. Hospital and surgery center services were billed in some facility setting, not necessarily this one. Surgeons who operate here but keep offices elsewhere do not appear. 9 more clinicians at this address see patients only in offices.
Location and market
- Address
- 40 2nd Ave · Waltham, MA · 02451
- County
- Middlesex County
- State
- Massachusetts
Nearby surgery centers
| Name | City | Distance |
|---|---|---|
| Boston Ivf, Inc | Waltham | 0.2 mi |
| Boston Eye Surgery & Laser Ctr-West | Waltham | 0.4 mi |
| Surgisite Boston | Waltham | 1.3 mi |
| Mass Eye And Ear Waltham | Waltham | 1.4 mi |
| Boston Endoscopy Center | Wellesley | 5.6 mi |
| Emerson Endoscopy And Digestive Health Center | Concord | 7.6 mi |
Sources and identifiers
- Operator: AHRQ Compendium of U.S. Health Systems (hospital linkage)
- Clinicians: CMS Doctors and Clinicians file (practice addresses) and Medicare Physician & Other Practitioners
- Location: CMS and Census Bureau geography
- Last confirmed
- 2026-10-26
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