Caroline Birks, MD
NPI 1851381537 · Internal Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Caroline Birks, MD is a Internal Medicine Physician provider in Boston, MA (NPI 1851381537).
Provider details
- NPI number
- 1851381537
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 213969 (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
204 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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 56 | $186 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 55 | $133 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 29 | $95 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 20 | $134 |
| Administration of Influenza Virus VaccineG0008 | 18 | $35 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 70 | 39 |
| Rosuvastatin Calcium | 60 | 29 |
| Levothyroxine Sodium | 44 | 18 |
| Losartan Potassium | 43 | 15 |
| Lisinopril | 35 | 18 |
| Amlodipine Besylate | 31 | 14 |
| Omeprazole |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-10-25
- Last updated
- 2014-02-11
Frequently asked questions
- What is Caroline Birks's NPI number?
- Caroline Birks's National Provider Identifier (NPI) is 1851381537, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Caroline Birks's specialty?
- Caroline Birks is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Caroline Birks located?
- Caroline Birks's practice location on file with NPPES is 15 Parkman St, Boston, MA 02114-3117.
- What is Caroline Birks's phone number?
- The practice phone number listed in the NPPES registry for Caroline Birks is (617) 724-6610.
- Does Caroline Birks accept Medicare?
- Caroline Birks is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Caroline Birks's NPI active?
- Yes — Caroline Birks's NPI (1851381537) is active in the NPPES registry as of the last update on 2014-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.