Quick answers
- Does Cyrus H. Yau accept Medicare assignment?
- Yes. Medicare's clinician data says Cyrus H. Yau 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 Cyrus H. Yau see?
- In 2024, CMS data shows 160 Original Medicare patients and 323 services for Cyrus H. Yau. This counts Original Medicare only and measures volume, not quality.
- What is Cyrus H. Yau's NPI number?
- 1518113000. 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 Cyrus H. Yau, 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 | 160 |
|---|---|
| Services billed to Medicare | 323 |
| Different services or procedures | 12 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)113 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)80 services
- Hospital discharge day management, 30 minutes or less (99238)57 services
- Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)20 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)19 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 pressure75%
- High cholesterol64%
- Arthritis54%
- Anxiety49%
- Depression42%
- Chronic kidney disease41%
Hospitals where Cyrus H. Yau works
Medicare's Facility Affiliation Data lists Cyrus H. Yau 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.
- Berkshire Medical CenterPittsfield, MA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 220046
- Massachusetts General HospitalBoston, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220071
- The Cooley Dickinson Hospital IncNorthampton, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220015
Practice locations
Addresses where Cyrus H. Yau is enrolled with Medicare (CMS data updated October 2, 2026).
- 30 Locust StNorthampton, MA 01060 (413) 582‑2898
- 725 N StPittsfield, MA 01201 (413) 447‑2000
Group practices
Medicare enrollment lists Cyrus H. Yau as a member of these groups (CMS data updated October 2, 2026).
- Mass General Brigham Medical Group Western Massachusetts Inc291 clinicians in the group
- Berkshire Medical Center Inc203 clinicians in the group
Specialties
- Internal Medicineprimary
- Pediatric Medicinealso
Other internal medicine doctors in Northampton
Clinicians with the same Medicare primary specialty in Northampton, MA — not a recommendation.
Other clinicians in Mass General Brigham Medical Group Western Massachusetts Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Warren Alpert Medical School Of Brown University |
| Graduation year | 2006 (20 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1518113000 |
| 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