Quick answers
- Does Tzyy-Choou Wu accept Medicare assignment?
- Medicare's clinician data says Tzyy-Choou Wu may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Tzyy-Choou Wu see?
- In 2024, CMS data shows 18 Original Medicare patients and 56 services for Tzyy-Choou Wu. This counts Original Medicare only and measures volume, not quality.
- What is Tzyy-Choou Wu's NPI number?
- 1427087972. 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 Tzyy-Choou Wu, 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 | 18 |
|---|---|
| Services billed to Medicare | 56 |
| Different services or procedures | 8 |
| Participating Medicare provider | Yes |
| Average age of these patients | 59 |
Most frequent services
- Pathology examination of tissue using a microscope, intermediate complexity (88305)19 services
Hospitals where Tzyy-Choou Wu works
Medicare's Facility Affiliation Data lists Tzyy-Choou Wu 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.
- The Johns Hopkins HospitalBaltimore, MD · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 210009
Practice locations
Addresses where Tzyy-Choou Wu is enrolled with Medicare (CMS data updated October 2, 2026).
- 600 N Wolf StBaltimore, MD 21287 (410) 955‑5000
Group practices
Medicare enrollment lists Tzyy-Choou Wu as a member of this group (CMS data updated October 2, 2026).
- Johns Hopkins University2,909 clinicians in the group
Specialties
- Pathologyprimary
Other pathologists in Baltimore
Clinicians with the same Medicare primary specialty in Baltimore, MD — not a recommendation.
Other clinicians in Johns Hopkins University
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1982 (44 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1427087972 |
| 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