Sheila Klassen, MD
NPI 1013375336 · Cardiovascular Disease Physician · Boston, MA
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sheila Klassen, MD is a Cardiovascular Disease Physician provider in Boston, MA (NPI 1013375336).
Provider details
- NPI number
- 1013375336
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
10 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
3,334 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) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 927 | $8 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 798 | $71 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 230 | $82 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 208 | $105 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate and Valve Function93325 | 203 | $3 |
| Ultrasound of Heart, Follow-Up |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 37 | 16 |
| Losartan Potassium | 15 | — |
| Rosuvastatin Calcium | 15 | — |
| Atorvastatin Calcium | 13 | — |
| Amlodipine Besylate | 12 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 1403 29 Street NwSuite C852aCalgary, ALBERTA 229Phone: (403) 944-8119
Registry dates
- Enumerated
- 2016-02-01
- Last updated
- 2023-06-29
- Certified
- 2023-06-29
Frequently asked questions
- What is Sheila Klassen's NPI number?
- Sheila Klassen's National Provider Identifier (NPI) is 1013375336, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sheila Klassen's specialty?
- Sheila Klassen is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Sheila Klassen located?
- Sheila Klassen's practice location on file with NPPES is 75 Francis St, Boston, MA 02115-6110.
- What is Sheila Klassen's phone number?
- The practice phone number listed in the NPPES registry for Sheila Klassen is (617) 732-5500.
- Does Sheila Klassen accept Medicare?
- Sheila Klassen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sheila Klassen's NPI active?
- Yes — Sheila Klassen's NPI (1013375336) is active in the NPPES registry as of the last update on 2023-06-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.