BRENDA GRZENIA
NPI 1376317388
Internal Medicine - Hematology & Oncology in Orland Park, IL

Q: What is Brenda Grzenia's NPI number?

The NPI number for Brenda Grzenia is 1376317388. It was assigned to this individual provider in the NPPES registry on November 9, 2023.

Q: What is Brenda Grzenia's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Q: When was this NPI record last updated?

The NPPES record for Brenda Grzenia was last updated on August 27, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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 November 09, 2023PECOS Enrolled

17047 LA GRANGE RD, ORLAND PARK, IL 60487(815) 300-7764 Get Directions Write a Review

NPPES record last updated: August 27, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Brenda Grzenia NPPES

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

BRENDA GRZENIA (NPI 1376317388) is an individual hematology & oncology provider in Orland Park, Illinois, licensed in Illinois (209028719) and active in the NPI registry since November 2023. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1376317388

Entity TypeIndividualFemale

Primary Taxonomy207RH0003X

Provider Legal NameBRENDA GRZENIA

Location Address17047 LA GRANGE RDOrland Park, IL 60487-7227

Mailing Address17047 La Grange RdOrland Park, IL 60487-7227 · (815) 300-7764

Phone(815) 300-7764

Sole ProprietorYes

Enumeration DateNovember 9, 2023

Last NPPES UpdateAugust 27, 2024

NPPES CertifiedAugust 27, 2024

✔ NPI 1376317388 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RH0003X

License✔ Licensed in IL · 209028719

Definition

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

Also ListedFamily MedicineTaxonomy 207Q00000X · License 209028719 (IL)

17047 LA GRANGE RD, Orland Park, IL 60487

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Brenda Grzenia is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignment

Medicare enrollment records show Brenda Grzenia reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Premier Suburban Medical Group, PLLC

Same address

Multi-Specialty

17047 LA GRANGE RD.
Orland Park, IL 60487

Reassigned Medicare billing, Illinois enrollment
44 clinicians in this Medicare group

NPI 1902412950 (815) 300-7664

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 9

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.

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.

575 services122 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.

169 services57 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.

36 services23 patients

Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212

This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.

32 services16 patients

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

27 services16 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

17 services16 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60487 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

$183.39 typical visit price

range $60.08 – $183.39

Typical copayment $45.84 (range $15.02 – $45.84)

Most-billed visit code 99205

Established Patient

$105.70 typical visit price

range $18.97 – $148.12

Typical copayment $26.42 (range $4.74 – $37.03)

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.

Other Providers at the Same Location NPPES 10

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

LAISVYDE SMAJKIC MD

Internal Medicine (Rheumatology)