Medicare Enrolled
Dr. Brett Brinker, MD
Hematology & Oncology · Grand Rapids, MI
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Low-engagement
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Brinker from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Brinker
Dr. Brett Brinker is a hematology & oncology specialist in Grand Rapids, MI, with 20 years of NPI registration. Based on federal Medicare data, Dr. Brinker performed 31,629 Medicare services across 3,129 unique beneficiaries.
Between the years covered by Open Payments, Dr. Brinker received a total of $1,587 from 23 pharmaceutical and/or device companies across 69 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in hematology & oncology. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Brinker is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 20 years in practice
▲ Top 15% volume in MI
$1,587 industry payments
Medicare Practice Summary
Medicare Utilization ↗31,629
Medicare services
Top 15% in MI for hematology & oncology
3,129
Unique beneficiaries
$25
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~1,581 Medicare services per year of practice
Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Daratumumab injection (Darzalex) An injection containing daratumumab and hyaluronidase-fihj administered under the skin. |
8,820 | $38 | $70 |
| Bortezomib injection, 0.1 mg Administration of a 0.1 mg dose of bortezomib medication via injection. |
3,150 | $4 | $70 |
| Rituximab-arrx biosimilar injection, 10 mg An injection of rituximab-arrx, a biosimilar medication, administered in a 10 mg dose. |
2,540 | $37 | $111 |
| Dexamethasone injection (steroid) An injection of dexamethasone sodium phosphate, a corticosteroid medication, administered in a dose of 1 milligram. |
2,472 | $0 | $1 |
| Immune globulin infusion (Gammagard) An injection of immune globulin (Gammagard Liquid) to provide antibodies. The dose specified is 500 mg. |
1,490 | $36 | $68 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
1,448 | $8 | $15 |
| Complete blood count (CBC) with differential An automated laboratory test that measures the levels of red blood cells, white blood cells, and platelets in the blood, including a breakdown of the different types of white blood cells. |
1,431 | $8 | $26 |
| Comprehensive metabolic blood panel A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers. |
989 | $10 | $35 |
| Anti-nausea injection (Aloxi/palonosetron) | 960 | $1 | $32 |
| Immunoglobulin level test A blood test that measures the level of gammaglobulins, which are immune system proteins. |
888 | $9 | $32 |
| Intravenous injection of additional new drug or substance Administration of an additional new medication or substance directly into a vein. |
547 | $11 | $34 |
| Immunoglobulin light chain measurement A blood test that measures the levels of immunoglobulin light chains, which are proteins produced by plasma cells. |
524 | $17 | $43 |
| Lactate dehydrogenase (LDH) level test A blood test that measures the amount of lactate dehydrogenase, an enzyme found in many body tissues. It helps assess tissue damage or disease. |
499 | $6 | $20 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
469 | $89 | $189 |
| Intravenous chemotherapy infusion, 1 hour or less Administration of chemotherapy medication directly into a vein. The procedure takes one hour or less to complete. |
424 | $93 | $292 |
| Cyclophosphamide, 100 mg | 346 | $16 | $100 |
| Pegfilgrastim-apgf injection An injection of pegfilgrastim-apgf, a biosimilar medication. The dose specified is 0.5 mg. |
288 | $90 | $331 |
| Fluorouracil injection, 500 mg Administration of a 500 mg dose of fluorouracil medication via injection. |
279 | $2 | $4 |
| Serum protein measurement A blood test that measures the total amount of protein in the serum. It helps evaluate overall health and nutritional status. |
259 | $11 | $37 |
| Zoledronic acid injection, 1 mg An injection of zoledronic acid administered at a dose of 1 mg. |
248 | $6 | $25 |
| Enhanced Oncology Model monthly payment This code represents the monthly enhanced oncology services payment under the Enhancing Oncology Model. It covers the administrative payment for enhanced services provided to eligible patients. |
234 | $70 | $70 |
| Doxorubicin hydrochloride injection, 10 mg This procedure involves the administration of a 10 mg dose of doxorubicin hydrochloride via injection. |
220 | $2 | $8 |
| Additional hour of intravenous chemotherapy This code represents the administration of chemotherapy medication into a vein for each additional hour beyond the initial period. |
205 | $21 | $47 |
| Pegfilgrastim-jmdb injection An injection of pegfilgrastim-jmdb, a biosimilar medication. The dose specified is 0.5 mg. |
192 | $96 | $553 |
| Hospital follow-up visit, high complexity Subsequent hospital inpatient or observation care for an existing patient involving high-level medical decision making, with at least 50 minutes total time on the date of the encounter. |
190 | $92 | $180 |
| Non-hormonal chemotherapy injection This procedure involves administering non-hormonal anti-neoplastic chemotherapy medication via injection into the skin or muscle tissue. |
163 | $51 | $123 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
163 | $62 | $133 |
| Reticulated platelet measurement A blood test that measures the level of young, newly formed platelets in the body. |
159 | $35 | $89 |
| Drug injection, under skin or into muscle A procedure involving the administration of a medication or substance via injection into the subcutaneous tissue or muscle. |
159 | $10 | $38 |
| Uric acid level test A blood test that measures the level of uric acid in your body. Uric acid is a waste product formed when the body breaks down purines. |
156 | $4 | $15 |
| Ferritin level test (iron stores) A blood test that measures the level of ferritin, a protein that stores iron in the body. |
148 | $13 | $46 |
| Phosphate level test A blood test that measures the amount of phosphate in your body. Phosphate is a mineral that helps keep bones and teeth strong. |
120 | $5 | $14 |
| Diphenhydramine injection, up to 50 mg An injection of diphenhydramine hydrochloride, an antihistamine medication, administered in a dose of up to 50 milligrams. |
118 | $1 | $2 |
| Magnesium level test A blood test to measure the amount of magnesium in your body. This helps check for magnesium deficiency or excess. |
114 | $7 | $23 |
| Thyroid stimulating hormone (TSH) test A blood test that measures the level of thyroid stimulating hormone to evaluate thyroid function. |
101 | $16 | $57 |
| Vitamin D level test A blood test to measure the amount of Vitamin D-3 in your body. |
97 | $29 | $101 |
| Intravenous infusion of new drug or substance, 1 hour or less This procedure involves administering a new medication or substance directly into a vein through an existing access site. The infusion is completed within one hour or less. |
83 | $46 | $142 |
| Prothrombin time test (blood clotting) A laboratory test that measures how long it takes for blood to clot. This procedure evaluates the body's coagulation process. |
80 | $4 | $13 |
| Vitamin B-12 level test A blood test that measures the amount of vitamin B-12 in your body. |
59 | $15 | $51 |
| Additional sequential IV infusion, 1 hour or less This code represents an additional intravenous infusion administered sequentially to a primary infusion. It covers the administration time of one hour or less. |
59 | $21 | $66 |
| Intravenous infusion, 1 hour or less Administration of medication or fluid directly into a vein for therapeutic, preventive, or diagnostic purposes. The procedure lasts one hour or less. |
58 | $45 | $151 |
| Iron level test | 56 | $6 | $22 |
| Additional hour of intravenous infusion This code represents each additional hour of intravenous infusion beyond the initial hour for therapy, prevention, or diagnosis. |
56 | $15 | $41 |
| Intravenous push injection of new drug or substance A healthcare provider injects a new medication or substance directly into a vein using a push technique. |
56 | $41 | $100 |
| Unclassified drug A medication that does not fit into standard HCPCS or CPT classification categories. |
53 | $1 | $2 |
| Intravenous drug injection A procedure involving the administration of a medication or substance directly into a vein. |
49 | $24 | $83 |
| Transferrin level test A blood test that measures the amount of transferrin, a protein that binds to and transports iron in the body. |
48 | $12 | $40 |
| Folic acid level test A blood test that measures the amount of folic acid in the serum. |
41 | $14 | $50 |
| Prolonged intravenous chemotherapy administration This procedure involves the administration of chemotherapy medication directly into a vein over an extended period. |
31 | $94 | $220 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
30 | $122 | $285 |
| Hospital follow-up visit, moderate complexity Follow-up hospital visit for an existing patient involving moderate medical decision making. The visit requires at least 35 minutes of time spent on the date of service. |
30 | $61 | $126 |
| Additional hour of intravenous hydration This code represents each additional hour of intravenous fluid administration beyond the initial hour. It is used to bill for extended hydration therapy. |
24 | $9 | $26 |
| Initial hospital admission, high complexity Initial hospital inpatient or observation care for a new patient involving high-level medical decision making, with at least 75 minutes total time on the date of the encounter. |
21 | $134 | $304 |
| Normal saline infusion, 1000 cc Administration of 1000 cc of normal saline solution into a vein. This procedure involves the intravenous delivery of a sterile saltwater solution. |
21 | $2 | $4 |
| Serum immunofixation test A laboratory test that analyzes a blood serum sample to identify specific abnormal proteins. The procedure uses an immunologic technique to detect and characterize these proteins. |
20 | $22 | $62 |
| Hospital discharge management, 30+ min This service covers the care provided by a physician or qualified healthcare professional on the day a patient is discharged from the hospital. It requires more than 30 minutes of total time spent on the day of discharge. |
20 | $88 | $236 |
| Hepatitis B surface antigen test A blood test that uses an immunoassay technique to detect the presence of the hepatitis B surface antigen. This test identifies whether the hepatitis B virus is currently present in the body. |
18 | $10 | $26 |
| Hepatitis B core antibody test A blood test that measures the level of antibodies to the hepatitis B core antigen. This test helps determine if a person has been infected with the hepatitis B virus. |
17 | $12 | $30 |
| Routine 12-lead electrocardiogram (ECG) A test that records the electrical activity of the heart using at least 12 leads to produce a tracing. |
17 | $4 | $22 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
17 | $128 | $264 |
| Manual urinalysis with microscopic examination A urine test performed manually without automated equipment. The sample is examined under a microscope to check for abnormalities. |
15 | $4 | $11 |
| Hemoglobin A1c test (diabetes monitoring) A blood test that measures your average blood sugar levels over the past two to three months. |
15 | $10 | $33 |
| Intravenous hydration infusion, 31-60 minutes Administration of fluids into a vein to maintain hydration. This procedure involves an infusion lasting between 31 and 60 minutes. |
13 | $24 | $84 |
| Hepatitis B surface antibody test A blood test that measures the level of antibodies against the hepatitis B surface antigen. This test is used to check for immunity to hepatitis B or to verify the effectiveness of the hepatitis B vaccine. |
12 | $11 | $27 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.
7.0% high complexity
64.8% medium
28.2% routine
Industry Payment Transparency
Open Payments through 2024 ↗$1,587
Total received (2018-2024)
Avg $317/year across 5 years
Top 46% in MI for hematology & oncology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
23
Companies
69
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$1,533 (96.6%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$53 (3.4%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$295
2023
$424
2022
$319
2019
$257
2018
$292
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
ABBVIE INC.
$89
E.R. Squibb & Sons, L.L.C.
$57
AstraZeneca Pharmaceuticals LP
$23
Kyowa Kirin, Inc.
$21
Mirati Therapeutics, Inc.
$20
Genentech USA, Inc.
$19
Merck Sharp & Dohme LLC
$18
Novartis Pharmaceuticals Corporation
$18
Celgene Corporation
$16
Gilead Sciences, Inc.
$14
Top 3 companies account for 57.2% of 2024 payments
All-time payments by company (2018-2024) ›
Celgene Corporation
$240
PFIZER INC.
$144
Gilead Sciences, Inc.
$130
AstraZeneca Pharmaceuticals LP
$123
Foundation Medicine, Inc.
$112
E.R. Squibb & Sons, L.L.C.
$100
ABBVIE INC.
$89
Amgen Inc.
$80
Kyowa Kirin, Inc.
$80
Genentech USA, Inc.
$72
ARRAY BIOPHARMA INC
$66
Novartis Pharmaceuticals Corporation
$50
Pharmacyclics LLC, an AbbVie Company
$49
Lilly USA, LLC
$43
Merck Sharp & Dohme LLC
$38
Pharmacyclics LLC, An AbbVie Company
$36
Takeda Pharmaceuticals U.S.A., Inc.
$27
AbbVie Inc.
$21
PharmaEssentia USA Corporation
$20
Mirati Therapeutics, Inc.
$20
Exelixis Inc.
$20
Merck Sharp & Dohme Corporation
$13
Incyte Corporation
$13
Top 3 companies account for 32.4% of all-time payments
Associated products mentioned in payments ›
ALUNBRIG · BESREMI · BRAFTOVI · Blincyto · CALQUENCE · Cabometyx · Columvi · EPKINLY · FOUNDATIONONE · IBRANCE · IMBRUVICA · KEYTRUDA · KRAZATI · LUTATHERA · Lunsumio · MYLOTARG · Nplate · OPDIVO · OPDUALAG · PEMAZYRE · POTELIGEO · Pomalyst · Poteligeo · REBLOZYL · TAGRISSO · Tecentriq · VENCLEXTA · VERZENIO · XTANDI · Zydelig
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Most payments (97%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Hematology & oncology specialists within 10 mi
23
Per 100K population
3.5
County median income
$80,390
Nearest hospital
SPECTRUM HEALTH
0.0 mi
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Brinker is a mixed practice specialist, with above-average Medicare volume (top 15% in MI), with low-engagement industry engagement, with 20 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Brinker experienced with daratumumab injection (darzalex)?
Based on Medicare claims data, Dr. Brinker performed 8,820 daratumumab injection (darzalex) services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Brinker receive payments from pharmaceutical companies?
Yes. Dr. Brinker received a total of $1,587 from 23 companies across 69 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Brinker's costs compare to other hematology & oncology specialists in Grand Rapids?
Dr. Brinker's average Medicare payment per service is $25. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Brinker) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
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About this page
All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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