Matthew Siu, MD
NPI 1467441816 · Family Medicine Physician · Malden, MA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Siu, MD is a Family Medicine Physician provider in Malden, MA (NPI 1467441816).
Provider details
- NPI number
- 1467441816
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 78886 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 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
680 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 294 | $139 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 143 | $8 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 84 | $141 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 76 | $95 |
| Administration of Influenza Virus VaccineG0008 | 34 | $35 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 23 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 109 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 688 | 202 |
| Amlodipine Besylate | 417 | 119 |
| Losartan Potassium | 289 | 76 |
| Simvastatin | 260 | 71 |
| Lisinopril | 251 | 80 |
| Metformin Hclbrand: Metformin Hcl Er | 197 | 58 |
| Metoprolol Succinate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-10-18
- Last updated
- 2015-02-24
Frequently asked questions
- What is Matthew Siu's NPI number?
- Matthew Siu's National Provider Identifier (NPI) is 1467441816, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Siu's specialty?
- Matthew Siu is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Siu located?
- Matthew Siu's practice location on file with NPPES is 578 Main St, Malden, MA 02148-3900.
- What is Matthew Siu's phone number?
- The practice phone number listed in the NPPES registry for Matthew Siu is (781) 321-3422.
- Does Matthew Siu accept Medicare?
- Matthew Siu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Siu's NPI active?
- Yes — Matthew Siu's NPI (1467441816) is active in the NPPES registry as of the last update on 2015-02-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.