Mariko Harper, MD
NPI 1336448513 · Cardiovascular Disease Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mariko Harper, MD is a Cardiovascular Disease Physician provider in Seattle, WA (NPI 1336448513).
Provider details
- NPI number
- 1336448513
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD60395120 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
15 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
3,351 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 | 408 | $8 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 251 | $71 |
| 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'SG2211 | 229 | $17 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 193 | $85 |
| Office Or Other Outpatient Visit for the Evaluation and Management of Established Patient That May Not Require Presence of Healthcare Professional99211 | 149 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 40 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 410 | 134 |
| Mavacamtenbrand: Camzyos | 321 | 30 |
| Apixabanbrand: Eliquis | 268 | 77 |
| Atorvastatin Calcium | 244 | 76 |
| Rosuvastatin Calcium | 157 | 53 |
| Furosemide | 147 | 55 |
| Amlodipine Besylate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$64,572 across 60 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
Additional practice locations (1)
- 1959 Ne Pacific St Rm Bb-527Box 356421Seattle, WA 98195-6421Phone: (206) 543-3605
Registry dates
- Enumerated
- 2011-03-27
- Last updated
- 2018-03-17
Frequently asked questions
- What is Mariko Harper's NPI number?
- Mariko Harper's National Provider Identifier (NPI) is 1336448513, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mariko Harper's specialty?
- Mariko Harper is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Mariko Harper located?
- Mariko Harper's practice location on file with NPPES is 1100 9th Ave, Seattle, WA 98101-2756.
- What is Mariko Harper's phone number?
- The practice phone number listed in the NPPES registry for Mariko Harper is (206) 341-1111.
- Does Mariko Harper accept Medicare?
- Mariko Harper is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mariko Harper's NPI active?
- Yes — Mariko Harper's NPI (1336448513) is active in the NPPES registry as of the last update on 2018-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.