James Liu, M.D.
NPI 1114983533 · Internal Medicine Physician · Somerville, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Liu, M.D. is a Internal Medicine Physician provider in Somerville, MA (NPI 1114983533).
Provider details
- NPI number
- 1114983533
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 202578 (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
2,005 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 298 | $6 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 208 | $99 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 154 | $13 |
| Blood Test, Basic Group of Blood Chemicals (calcium, Total)80048 | 127 | $8 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 121 | $141 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 102 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 53 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lisinopril | 266 | 64 |
| Atorvastatin Calcium | 232 | 55 |
| Metoprolol Succinate | 116 | 28 |
| Amlodipine Besylate | 115 | 30 |
| Hydrochlorothiazide | 102 | 27 |
| Simvastatin | 82 | 23 |
| Tamsulosin Hcl | 77 | 17 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-04-25
- Last updated
- 2011-06-27
Frequently asked questions
- What is James Liu's NPI number?
- James Liu's National Provider Identifier (NPI) is 1114983533, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Liu's specialty?
- James Liu is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is James Liu located?
- James Liu's practice location on file with NPPES is 40 Holland St, Somerville, MA 02144-2705.
- What is James Liu's phone number?
- The practice phone number listed in the NPPES registry for James Liu is (617) 629-6350.
- Does James Liu accept Medicare?
- James Liu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Liu's NPI active?
- Yes — James Liu's NPI (1114983533) is active in the NPPES registry as of the last update on 2011-06-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.