Amy Wu, M.D.
NPI 1891958831 · Rheumatology Physician · Somerville, MA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Amy Wu, M.D. is a Rheumatology Physician provider in Somerville, MA (NPI 1891958831).
Provider details
- NPI number
- 1891958831
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 246993 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
3,283 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Measurement C-Reactive Protein for Detection of Infection Or Inflammation86140 | 584 | $5 |
| Red Blood Cell Sedimentation Rate, to Detect Inflammation, Non-Automated85651 | 577 | $4 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 543 | $9 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 422 | $10 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 398 | $138 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 393 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 42 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methotrexate Sodiumbrand: Methotrexate | 333 | 98 |
| Prednisone | 242 | 65 |
| Allopurinol | 138 | 41 |
| Etanerceptbrand: Enbrel Sureclick | 107 | 11 |
| Hydroxychloroquine Sulfate | 104 | 33 |
| Leucovorin Calcium | 103 | 32 |
| Leflunomide | 94 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-07-09
- Last updated
- 2021-03-04
- Certified
- 2021-03-04
Frequently asked questions
- What is Amy Wu's NPI number?
- Amy Wu's National Provider Identifier (NPI) is 1891958831, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Amy Wu's specialty?
- Amy Wu is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Amy Wu located?
- Amy Wu's practice location on file with NPPES is 40 Holland St, Somerville, MA 02144-2705.
- What is Amy Wu's phone number?
- The practice phone number listed in the NPPES registry for Amy Wu is (617) 629-6250.
- Does Amy Wu accept Medicare?
- Amy Wu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Amy Wu's NPI active?
- Yes — Amy Wu's NPI (1891958831) is active in the NPPES registry as of the last update on 2021-03-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.