Katharine Clapham, MD
NPI 1346502770 · Cardiovascular Disease Physician · Boston, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katharine Clapham, MD is a Cardiovascular Disease Physician provider in Boston, MA (NPI 1346502770).
Provider details
- NPI number
- 1346502770
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 283256 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
14 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,892 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 444 | $8 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 337 | $65 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 248 | $64 |
| Ultrasound of Heart Blood Flow, Valves and Chambers, Follow-Up93321 | 103 | $7 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate and Valve Function93325 | 90 | $3 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'S |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Spironolactone | 109 | 37 |
| Losartan Potassium | 87 | 22 |
| Furosemide | 81 | 26 |
| Metoprolol Succinate | 72 | 24 |
| Apixabanbrand: Eliquis | 63 | 19 |
| Atorvastatin Calcium | 50 | 19 |
| Empagliflozin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$646 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-06-12
- Last updated
- 2022-07-08
- Certified
- 2022-07-08
Frequently asked questions
- What is Katharine Clapham's NPI number?
- Katharine Clapham's National Provider Identifier (NPI) is 1346502770, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katharine Clapham's specialty?
- Katharine Clapham is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Katharine Clapham located?
- Katharine Clapham's practice location on file with NPPES is 75 Francis St, Boston, MA 02115-6110.
- What is Katharine Clapham's phone number?
- The practice phone number listed in the NPPES registry for Katharine Clapham is (617) 525-9733.
- Does Katharine Clapham accept Medicare?
- Katharine Clapham is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katharine Clapham's NPI active?
- Yes — Katharine Clapham's NPI (1346502770) is active in the NPPES registry as of the last update on 2022-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.