Quick answers
- Does Melissa M. Wu accept Medicare assignment?
- Yes. Medicare's clinician data says Melissa M. Wu 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 Melissa M. Wu see?
- In 2024, CMS data shows 227 Original Medicare patients and 384 services for Melissa M. Wu. This counts Original Medicare only and measures volume, not quality.
- What is Melissa M. Wu's NPI number?
- 1235167859. 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 Melissa M. 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 | 227 |
|---|---|
| Services billed to Medicare | 384 |
| Different services or procedures | 27 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)139 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)55 services
- Automated urinalysis test (81003)30 services
- Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza (87428)20 services
- Detection test by immunoassay with direct visual observation for streptococcus, group a (strep) (87880)20 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 cholesterol74%
- High blood pressure65%
- Arthritis45%
- Anxiety31%
- Diabetes24%
- Osteoporosis22%
Hospitals where Melissa M. Wu works
Medicare's Facility Affiliation Data lists Melissa M. 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.
- Southern NH Medical CenterNashua, NH · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 300020
Practice locations
Addresses where Melissa M. Wu is enrolled with Medicare (CMS data updated October 2, 2026).
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Nashua
Clinicians with the same Medicare primary specialty in Nashua, NH — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Virginia School Of Medicine |
| Graduation year | 1992 (34 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1235167859 |
| 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