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Edit this profileAt a glance
- 3941 J Street, Suite 260, Sacramento, CA 95819
About Dr. Marquardt
Based in Sacramento, CA, Walt Marquardt, MD is listed in the NPI registry under interventional cardiology. Walt graduated from University of Pittsburgh School of Medicine in 1981. Walt is also listed as specializing in cardiovascular disease. According to Medicare claims data, Walt cared for 2,566 Medicare patients across 2,854 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, routine electrocardiogram (ecg) using at least 12 leads with interpretation and report, and ultrasound of heart with color-depicted blood flow, rate, direction and valve function. NPI 1881766962 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (916) 736-2323
- Email not available
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Practice Locations
3941 J STREET SUITE 260
Sacramento, CA 95819
Conditions Commonly Evaluated or Treated
Within Interventional Cardiology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Artery blockages
- Aortic aneurysm
- Carotid Artery Blockage
- Completely Blocked Heart Artery
- Microvascular angina
- Re-Blocked Heart Stent
- Severely Calcified Heart Arteries
- Torn Heart Artery
Blood clots
Blood pressure
Chest symptoms
Circulation & veins
Coronary disease
Heart failure
Heart muscle
Heart muscle conditions
Heart rhythm
Heart rhythm & blood flow
Heart valves
Structural & congenital
Structural heart
Valve disease
Vascular disease
- Leg Cramps When Walking
- Narrow kidney artery
- Stomach Pain After Eating From Arteries
- Subclavian Steal Syndrome
Vein conditions
Procedures & services
Artery procedures
- Carotid Artery Stent
- Atherectomy
- Drug-Coated Balloon Treatment
- Minimally Invasive Aneurysm Repair
- Opening Chronic 100% Blocked Heart Arteries
- Shockwave Plaque Busting In Heart Arteries
Clot procedures
- Catheter Clot Dissolving Treatment
- Catheter Blood Clot Removal From Legs
- IVC Filter Placement
- IVC Filter Removal
Most searched procedures
- AFib ablation
- Angioplasty and stenting
- Cardiac catheterization
- Pacemaker implantation
- Watchman procedure
Blood pressure procedures
Circulation & limbs
Circulatory support
Coronary stenting
Diagnostic catheterization
Diagnostic tests
Diagnostics & monitoring
- Fractional flow reserve measurement
- Implantable Loop Recorder (Cardiac Monitor Implant)
- Intravascular ultrasound
Emergency heart procedures
Heart devices
Heart muscle
Heart support
Imaging & diagnostics
Stenting
Structural heart repair
Structural repair
Valve procedures
- Balloon Heart Valve Opening
- Leaky Artificial Heart Valve Repair
- Transcatheter aortic valve replacement
- Transcatheter mitral valve repair
- Transcatheter Pulmonary Valve Replacement
- TriClip Valve Repair
Valve replacement
Vein procedures
Procedures Most Often Billed to Medicare
2,854 services · 2,566 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
423 | More often than most peers in Interventional Cardiology |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | Treatment | 93306 |
337 | More often than most peers in Interventional Cardiology |
| Insertion of stents with balloon dilation of coronary artery or branch, single artery or branch | Treatment | 92928 |
159 | More than most peers in Interventional Cardiology |
| Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist | Treatment | 93458 |
143 | More than most peers in Interventional Cardiology |
| Heart rhythm recording of continous external ekg over 8-15 days | Treatment | 93246 |
88 | More than most peers in Interventional Cardiology |
| Heart rhythm review and interpretation of continous external ekg over 8-15 days | Treatment | 93248 |
85 | More than most peers in Interventional Cardiology |
| Ultrasound of heart with continuous electrocardiogram (ecg) during rest, exercise and/or drug induced stress with review and report | Treatment | 93351 |
81 | More often than most peers in Interventional Cardiology |
| Ultrasound evaluation of heart blood vessel during diagnosis or treatment, initial vessel | Treatment | 93571 |
67 | More than most peers in Interventional Cardiology |
| Insertion of tube in right and left heart chambers and coronary artery for diagnosis with review by radiologist | Treatment | 93460 |
66 | More than most peers in Interventional Cardiology |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | Treatment | 93306 |
36 | More often than most peers in Interventional Cardiology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other interventional cardiologists at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 6
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 32 related providers in 4 groups
Other interventional cardiologists in Sacramento 8
Same specialty, same city.
Trained at University of Pittsburgh School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1981 at University of Pittsburgh School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Dr. Marquardt's specialty?
Dr. Marquardt is an interventional cardiologist in Sacramento, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Interventional Cardiology”.
NPI registry
Where can I find Dr. Marquardt?
Dr. Marquardt is listed at 3941 J Street Suite 260, Sacramento, CA 95819. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Marquardt?
The number on file is (916) 736-2323. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Marquardt's NPI number?
Dr. Marquardt's National Provider Identifier is 1881766962. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Marquardt's medical education?
Dr. Marquardt attended University of Pittsburgh School of Medicine, graduating in 1981. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Marquardt been practicing?
Dr. Marquardt has 45 years experience. Calculated from a graduation year of 1981, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Marquardt known for?
According to Medicare billing data, Dr. Marquardt provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report and ultrasound of heart with color-depicted blood flow, rate, direction and valve function, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Marquardt confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Marquardt. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.