Physician Profile

Brett H. Herzog, MD PHD

Unclaimed Profile

About Dr. Herzog

Brett H. Herzog, MD PHD is a healthcare provider in Shiloh, IL specializing in medical oncology. Brett trained at University of Oklahoma College of Medicine, graduating in 2015. Brett is also listed as specializing in internal medicine. According to Medicare claims data, Brett cared for 423 Medicare patients across 2,435 services. The services billed most often include injection, dexamethasone sodium phosphate, 1 mg, injection, palonosetron hcl, 25 mcg, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more.

Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.

Education & Training

Specialty

Medical Oncology (Primary)
Medical Oncology (Additional)

Credentials & Licensing

IL license036153509
NPI1023499282
NPI issued06/13/2015

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.

Medicare information

Accepts Medicare assignmentYes
Medicare opt-outNo
Can order and refer in MedicareYes

Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.

Common questions

What does Dr. Herzog specialize in?

Dr. Herzog is an oncologist in Shiloh, IL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Medical Oncology”.

NPI registry

Where is Dr. Herzog located?

Dr. Herzog is listed at 1418 Cross St Div Im Medical Oncology, Ste 180, Shiloh, IL 62269. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

What is Dr. Herzog's phone number?

The number on file is (618) 607-1340. Guide.md cannot book appointments or pass on messages — please call the office directly.

NPI registry

What is Dr. Herzog's NPI number?

Dr. Herzog's National Provider Identifier is 1023499282. 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

Where did Dr. Herzog go to medical school?

Dr. Herzog attended University of Oklahoma College of Medicine, graduating in 2015. This comes from the CMS National Downloadable File.

CMS public data

How long has Dr. Herzog been practicing?

Dr. Herzog has 11 years experience. Calculated from a graduation year of 2015, reported in the CMS National Downloadable File.

CMS public data

What does Dr. Herzog do most often?

According to Medicare billing data, Dr. Herzog provides treatments such as administration of chemotherapy into vein, 1 hour or less and injection of additional new drug or substance into vein, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.

Medicare claims

Has Dr. Herzog confirmed this information?

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.