DR. BRETT HOWARD HERZOG MD PHD
NPI 1023499282
Internal Medicine - Medical Oncology in Shiloh, IL

Q: What is Brett Herzog's NPI number?

The NPI number for Brett Herzog is 1023499282. It was assigned to this individual provider in the NPPES registry on June 13, 2015.

Q: What is Brett Herzog's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Q: When was this NPI record last updated?

The NPPES record for Brett Herzog was last updated on April 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since June 13, 2015PECOS EnrolledAccepts Medicare Assignment

92.39/100

CMS Quality Rating

1418 CROSS ST, DIV IM MEDICAL ONCOLOGY, STE 180, SHILOH, IL 62269(618) 607-1340(618) 622-9724 Get Directions Write a Review

NPPES record last updated: April 21, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Nov 8, 2023, Nov 15, 2021 (2 updates tracked since 2021).

On this page

About Dr. Brett Howard Herzog Md Phd NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. BRETT HOWARD HERZOG MD PHD (NPI 1023499282) is an individual medical oncology provider in Shiloh, Illinois, licensed in Illinois (036153509) and active in the NPI registry since June 2015. He is enrolled in Medicare PECOS, is affiliated with Alton Memorial Hospital, and is a graduate of University Of Oklahoma College Of Medicine (2015).

NPPES Registry Identity

NPI1023499282

Entity TypeIndividualMale

Primary Taxonomy207RX0202X

Provider Legal NameDR. BRETT HOWARD HERZOGCredential: MD PHD

Location Address1418 CROSS ST, DIV IM MEDICAL ONCOLOGY, STE 180Shiloh, IL 62269-2914

Mailing AddressPo Box 7412011Chicago, IL 60674-2011 · (618) 607-1340 · Fax (618) 622-9724

Phone(618) 607-1340

Fax(618) 622-9724

Sole ProprietorNo

Medical School CMSUniversity Of Oklahoma College Of MedicineGraduated 2015

Enumeration DateJune 13, 2015

Last NPPES UpdateApril 21, 20252 updates tracked since enumeration

✔ NPI 1023499282 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RX0202X

License✔ Licensed in IL · 036153509

Definition

An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.

Also ListedInternal MedicineTaxonomy 207R00000X · License 036153509 (IL)

1418 CROSS ST, Shiloh, IL 62269

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Other Identifiers 1

Medicaid200063716MO

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Cox HealthPlans.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Brett Howard Herzog Md Phd is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1850605734

PECOS Enrollment IDI20200808000063, I20210813002314

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 17

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Injection, dexamethasone sodium phosphate, 1 mg J1100

Dexamethasone sodium phosphate is a medication given via injection. It is a type of steroid that helps reduce inflammation and immune responses. It can be used to treat a variety of conditions, such as allergies, skin conditions, arthritis, and more.

1,010 services24 patients

Injection, palonosetron hcl, 25 mcg J2469

Palonosetron HCL is an injection used to prevent nausea and vomiting caused by chemotherapy. It works by blocking a natural substance (serotonin) in the body that can cause vomiting. This helps improve your comfort during cancer treatment.

450 services15 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

244 services87 patients

Administration of chemotherapy into vein, 1 hour or less 96413

Chemotherapy is a treatment that uses drugs to destroy cancer cells. When administered into a vein, it's often through an IV. This procedure usually lasts 1 hour or less. You may feel a slight pinch as the needle is inserted, but it's generally painless.

170 services46 patients

Injection of additional new drug or substance into vein 96375

This procedure involves introducing a new medication or substance into your bloodstream via a vein. It's typically done using a small needle. The substance can help treat various conditions or assist in diagnostic procedures. It's generally safe and monitored by professionals.

126 services26 patients

Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less 96367

This procedure involves injecting fluids or medication directly into your vein. It's used for treatment, prevention, or diagnosis. An additional sequential infusion may be given within an hour if needed. This helps to ensure the medicine is distributed effectively in your body.

95 services23 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

70 services41 patients

Administration of additional new drug or substance into vein, 1 hour or less 96417

This procedure involves introducing a new drug or substance into your vein, typically via an IV drip. It lasts for an hour or less. This method allows the substance to quickly reach your bloodstream, ensuring rapid and effective treatment.

51 services13 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

49 services22 patients

Infusion, normal saline solution , 1000 cc J7030

An infusion of normal saline solution, 1000 cc, is a common medical procedure. It involves introducing a saltwater solution into your bloodstream via an intravenous (IV) line. This helps to hydrate your body, correct electrolyte imbalances, and deliver medications if needed.

36 services20 patients

Infusion into a vein for hydration, each additional hour 96361

This procedure involves delivering fluids directly into your vein to keep your body hydrated. It is typically done when oral hydration is insufficient. Each additional hour means more fluid is infused to ensure adequate hydration.

27 services15 patients

Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less 96365

This is a procedure where a medical professional inserts a small tube into your vein to deliver medication, nutrients, or fluids directly into your bloodstream. This can be for treatment, prevention, or diagnosis. The process typically takes less than an hour.

26 services17 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

21 services21 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

20 services17 patients

Infusion into a vein for hydration, 31-60 minutes 96360

This is a procedure where a sterile solution is administered into your vein to help restore body fluid balance. It typically lasts between 31-60 minutes. It's a safe, common treatment for dehydration or to deliver medication.

16 services12 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

13 services13 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

11 services11 patients

Hospital Affiliations CMS Care Compare 4

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Alton Memorial Hospital

Acute Care Hospitals · Alton, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140002

LocationOne Memorial DriveAlton, IL 62002 · Madison County

Emergency services Birthing friendly

Memorial Hospital

Acute Care Hospitals · Belleville, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140185

Location4500 Memorial DriveBelleville, IL 62226 · St. Clair County

Emergency services Birthing friendly

Barnes Jewish Hospital

Acute Care Hospitals · Saint Louis, MO

4/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number260032

LocationOne Barnes-Jewish Hospital PlazaSaint Louis, MO 63110 · St. Louis City County

Emergency services Birthing friendly

Barnes-Jewish St Peters Hospital

Acute Care Hospitals · Saint Peters, MO

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number260191

Location10 Hospital DrSaint Peters, MO 63376 · St. Charles County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 62269 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$173.35 typical visit price

range $56.28 – $173.35

Typical copayment $43.33 (range $14.07 – $43.33)

Most-billed visit code 99205

Established Patient

$99.71 typical visit price

range $17.51 – $139.99

Typical copayment $24.92 (range $4.37 – $34.99)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

92.39/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

97.81

Promoting Interoperability

100

Improvement Activities

Cost

70.26

Other Providers at the Same Location NPPES 12

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. PAUL KOGAN MD

Urology

1418 CROSS ST, DIV SURG UROLOGY, STE 180
SHILOH, IL 62269

St. Clair County (314) 362-8200

DR. JOHN L VISCONTI DO

Internal Medicine (Medical Oncology)

1418 CROSS ST, DIV IM MEDICAL ONCOLOGY, STE 180
SHILOH, IL 62269

St. Clair County (618) 607-1340

DR. ALFRED O GRECO MD

Internal Medicine (Medical Oncology)

1418 CROSS ST, DIV IM MEDICAL ONCOLOGY, STE 180
SHILOH, IL 62269

St. Clair County (618) 607-1340

MR. COREY AUSTIN BROOKS PA

Physician Assistant

1418 CROSS ST, DIV IM MEDICAL ONCOLOGY, STE 180
SHILOH, IL 62269

St. Clair County (618) 607-1340

PROTESTANT MEMORIAL MEDICAL CENTER, INC.

Pharmacy (Community/Retail Pharmacy)

1418 CROSS ST
SHILOH, IL 62269

St. Clair County (618) 607-1419

MS. AMANDA D ALLEN AGNP

Nurse Practitioner (Gerontology)

1418 CROSS ST, DIV IM MEDICAL ONCOLOGY, STE 180
SHILOH, IL 62269

St. Clair County (800) 647-2098

DR. WILLIAM JAMES POPOVIC MD

Internal Medicine (Medical Oncology)

1418 CROSS ST, DIV IM MEDICAL ONCOLOGY, STE 180
SHILOH, IL 62269

St. Clair County (618) 607-1340

MS. STACI J LADOWITZ PA

Physician Assistant (Medical)

1418 CROSS ST, STE 160
SHILOH, IL 62269

St. Clair County (618) 607-1340

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Brett Herzog's NPI number?

The NPI number for Brett Herzog is 1023499282. It was assigned to this individual provider in the NPPES registry on June 13, 2015.

Where is Brett Herzog located?

Brett Herzog practices at 1418 Cross St Div Im Medical Oncology, Ste 180, Shiloh, IL 62269. The listed phone number is (618) 607-1340.

What is Brett Herzog's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Is Brett Herzog enrolled in Medicare?

Yes. Brett Herzog is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Brett Herzog accept?

Health plans from Cox HealthPlans list Brett Herzog as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Brett Herzog affiliated with any hospitals?

According to CMS data, Brett Herzog is affiliated with Alton Memorial Hospital, Memorial Hospital, Barnes Jewish Hospital and Barnes-Jewish St Peters Hospital.

When was this NPI record last updated?

The NPPES record for Brett Herzog was last updated on April 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.