Walt Marquardt, MD
NPI 1881766962 · Interventional Cardiology Physician · Sacramento, CA
Enrolled with Medicare as Practitioner - Interventional Cardiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Walt Marquardt, MD is a Interventional Cardiology Physician provider in Sacramento, CA (NPI 1881766962).
Provider details
- NPI number
- 1881766962
- Entity type
- Individual
- Primary specialty
- Interventional Cardiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G59664 (CA)
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
19 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
2,961 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 429 | $138 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 423 | $15 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 337 | $217 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 221 | $84 |
| Insertion of Stents With Balloon Dilation of Coronary Artery Or Branch, Single Artery Or Branch92928 | 159 | $501 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 51 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 407 | 131 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 392 | 139 |
| Apixabanbrand: Eliquis | 336 | 86 |
| Losartan Potassium | 324 | 107 |
| Metoprolol Succinate | 298 | 110 |
| Rosuvastatin Calcium | 206 | 75 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,119 across 77 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
- 2006-11-14
- Last updated
- 2015-01-30
Frequently asked questions
- What is Walt Marquardt's NPI number?
- Walt Marquardt's National Provider Identifier (NPI) is 1881766962, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Walt Marquardt's specialty?
- Walt Marquardt is listed in the NPPES registry with a primary specialty of Interventional Cardiology Physician (Allopathic & Osteopathic Physicians).
- Where is Walt Marquardt located?
- Walt Marquardt's practice location on file with NPPES is 3941 J Street, Sacramento, CA 95819-3633.
- What is Walt Marquardt's phone number?
- The practice phone number listed in the NPPES registry for Walt Marquardt is (916) 736-2323.
- Does Walt Marquardt accept Medicare?
- Walt Marquardt is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Walt Marquardt's NPI active?
- Yes — Walt Marquardt's NPI (1881766962) is active in the NPPES registry as of the last update on 2015-01-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.