Quick answers
- Does Tammy Hshieh accept Medicare assignment?
- Yes. Medicare's clinician data says Tammy Hshieh 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 Tammy Hshieh see?
- In 2024, CMS data shows 299 Original Medicare patients and 639 services for Tammy Hshieh. This counts Original Medicare only and measures volume, not quality.
- What is Tammy Hshieh's NPI number?
- 1477780443. 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 Tammy Hshieh, 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 | 299 |
|---|---|
| Services billed to Medicare | 639 |
| Different services or procedures | 9 |
| Participating Medicare provider | Yes |
| Average age of these patients | 82 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)317 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)101 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)88 services
- Telephone medical discussion with physician, 21-30 minutes (99443)56 services
- New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)51 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 cholesterol75%
- Osteoporosis61%
- Arthritis60%
- Anxiety48%
- Depression46%
Hospitals where Tammy Hshieh works
Medicare's Facility Affiliation Data lists Tammy Hshieh 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.
- Beth Israel Deaconess Medical CenterBoston, MA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 220086
- Brigham and Women Faulkner HospitalJamaica Plain, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220119
- Brigham and Women's HospitalBoston, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220110
- Massachusetts General HospitalBoston, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220071
Practice locations
Addresses where Tammy Hshieh is enrolled with Medicare (CMS data updated October 2, 2026).
- 330 Brookline AveBoston, MA 02215 (617) 754‑8612
- 450 Brookline AveBoston, MA 02215 (617) 632‑3586
- 75 Francis StBoston, MA 02115 (617) 732‑5500
Group practices
Medicare enrollment lists Tammy Hshieh as a member of these groups (CMS data updated October 2, 2026).
- Brigham and Womens Physicians Organization Inc2,994 clinicians in the group
- Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc1,740 clinicians in the group
- Dana-Farber Cancer Institute, Inc.684 clinicians in the group
Specialties
- Geriatric Medicineprimary
- Internal Medicinealso
Other geriatricians in Boston
Clinicians with the same Medicare primary specialty in Boston, MA — not a recommendation.
Other clinicians in Brigham and Womens Physicians Organization 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 | 2009 (17 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1477780443 |
| 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