Niamh Carroll, M.D.
NPI 1023149069 · Internal Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Niamh Carroll, M.D. is a Internal Medicine Physician provider in Boston, MA (NPI 1023149069).
Provider details
- NPI number
- 1023149069
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 231068 (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
19 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
752 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 | 175 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 91 | $123 |
| Hemoglobin A1c Level83036 | 63 | $10 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 57 | $13 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 47 | $81 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 40 | $10 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 122 | 51 |
| Amlodipine Besylate | 98 | 38 |
| Levothyroxine Sodium | 61 | 23 |
| Losartan Potassium | 45 | 19 |
| Lisinopril | 44 | 16 |
| Metoprolol Succinate | 40 | 16 |
| Rosuvastatin Calcium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-09
- Last updated
- 2019-12-12
- Certified
- 2019-12-12
Frequently asked questions
- What is Niamh Carroll's NPI number?
- Niamh Carroll's National Provider Identifier (NPI) is 1023149069, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Niamh Carroll's specialty?
- Niamh Carroll is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Niamh Carroll located?
- Niamh Carroll's practice location on file with NPPES is 800 Washington St, Boston, MA 02111-1552.
- What is Niamh Carroll's phone number?
- The practice phone number listed in the NPPES registry for Niamh Carroll is (617) 636-5000.
- Does Niamh Carroll accept Medicare?
- Niamh Carroll is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Niamh Carroll's NPI active?
- Yes — Niamh Carroll's NPI (1023149069) is active in the NPPES registry as of the last update on 2019-12-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.