Mary Larson, M.D.
NPI 1982650040 · Cardiovascular Disease Physician · Redwood City, CA
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Larson, M.D. is a Cardiovascular Disease Physician provider in Redwood City, CA (NPI 1982650040).
Provider details
- NPI number
- 1982650040
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- M-15598 (ID)
Specialties & taxonomies
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
20 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
2,689 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 | 883 | $8 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 412 | $66 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 162 | $82 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 154 | $94 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 122 | $8 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 32 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 194 | 73 |
| Rosuvastatin Calcium | 122 | 54 |
| Amlodipine Besylate | 119 | 55 |
| Apixabanbrand: Eliquis | 92 | 33 |
| Atorvastatin Calcium | 86 | 43 |
| Losartan Potassium | 83 | 24 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$109 across 1 record (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)
- 700 W Ironwood Dr Ste 350Coeur D Alene, ID 83814-4487Phone: (208) 625-5250Fax: (208) 625-5251
Registry dates
- Enumerated
- 2006-05-26
- Last updated
- 2025-07-23
- Certified
- 2025-07-23
Frequently asked questions
- What is Mary Larson's NPI number?
- Mary Larson's National Provider Identifier (NPI) is 1982650040, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Larson's specialty?
- Mary Larson is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Larson located?
- Mary Larson's practice location on file with NPPES is 2900 Whipple Ave, Redwood City, CA 94062-2843.
- What is Mary Larson's phone number?
- The practice phone number listed in the NPPES registry for Mary Larson is (650) 306-2300.
- Does Mary Larson accept Medicare?
- Mary Larson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Larson's NPI active?
- Yes — Mary Larson's NPI (1982650040) is active in the NPPES registry as of the last update on 2025-07-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.