Physician Profile
William R. Herzog, MD practices interventional cardiology in Columbia, MD. William is a 1982 graduate of Duke University School of Medicine. William is also listed as specializing in cardiovascular disease. According to Medicare claims data, the services billed most often include insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
10710 CHARTER DR SUITE 400
Columbia, MD 21044
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.
Most searched conditions
Artery blockages
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
Vein conditions
Most searched procedures
Artery procedures
Blood pressure procedures
Circulation & limbs
Circulatory support
Clot procedures
Coronary stenting
Diagnostic catheterization
Diagnostic tests
Diagnostics & monitoring
Emergency heart procedures
Heart devices
Heart muscle
Heart support
Imaging & diagnostics
Stenting
Structural heart repair
Structural repair
Valve procedures
Valve replacement
Vein procedures
11 services · 11 patients · 1 distinct code
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist | Treatment | 93458 |
11 | Less 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.
Dr. Herzog is an interventional cardiologist in Columbia, MD. That is the designation recorded for this NPI in the federal registry, where it is listed as “Interventional Cardiology”.
NPI registry
Dr. Herzog is listed at 10710 Charter Dr Suite 400, Columbia, MD 21044. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (410) 997-7979. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Dr. Herzog's National Provider Identifier is 1902873979. 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
Dr. Herzog attended Duke University School of Medicine, graduating in 1982. This comes from the CMS National Downloadable File.
CMS public data
Dr. Herzog has 44 years experience. Calculated from a graduation year of 1982, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Dr. Herzog provides treatments such as insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Herzog. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.