Dr. Louis Avvento, MD
What this data tells you about Dr. Avvento
Dr. Louis Avvento is a hematology & oncology specialist in Southampton, NY, with 20 years of NPI registration. Based on federal Medicare data, Dr. Avvento performed 206,976 Medicare services across 18,190 unique beneficiaries.
Between the years covered by Open Payments, Dr. Avvento received a total of $1,422 from 22 pharmaceutical and/or device companies across 35 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. Avvento 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.
Medicare Practice Summary
Medicare Utilization ↗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 |
|---|---|---|---|
| Iron infusion (Injectafer) An intravenous injection of ferric carboxymaltose, an iron replacement medication. |
68,250 | $1 | $5 |
| Darbepoetin injection (Aranesp) for anemia An injection of darbepoetin alfa used for non-end-stage renal disease purposes. |
26,000 | $2 | $20 |
| Daratumumab injection (Darzalex) An injection containing daratumumab and hyaluronidase-fihj administered under the skin. |
16,200 | $38 | $135 |
| Iron sucrose injection (Venofer) An injection of iron sucrose used to replenish iron levels in the body. |
13,000 | $0 | $1 |
| Denosumab injection (Prolia/Xgeva) | 11,520 | $19 | $90 |
| Pembrolizumab injection (Keytruda) | 9,800 | $43 | $100 |
| Flow cytometry, additional marker An additional marker is tested during a flow cytometry procedure to analyze DNA or cells. This step adds specific data points to the initial analysis. |
7,913 | $23 | $108 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
4,171 | $8 | $20 |
| 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. |
4,127 | $8 | $150 |
| Bortezomib injection, 0.1 mg Administration of a 0.1 mg dose of bortezomib medication via injection. |
3,344 | $4 | $150 |
| Comprehensive metabolic blood panel A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers. |
3,202 | $10 | $60 |
| Immune globulin infusion (Octagam) This procedure involves the administration of immune globulin medication directly into a vein. It is provided in a non-lyophilized liquid form. |
2,820 | $33 | $110 |
| Magnesium level test A blood test to measure the amount of magnesium in your body. This helps check for magnesium deficiency or excess. |
2,323 | $7 | $75 |
| 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. |
2,274 | $6 | $30 |
| Dexamethasone injection (steroid) An injection of dexamethasone sodium phosphate, a corticosteroid medication, administered in a dose of 1 milligram. |
2,273 | $0 | $10 |
| 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. |
2,157 | $4 | $50 |
| 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. |
1,933 | $118 | $457 |
| Ferritin level test (iron stores) A blood test that measures the level of ferritin, a protein that stores iron in the body. |
1,913 | $13 | $150 |
| Iron level test | 1,853 | $6 | $70 |
| Iron binding capacity test A blood test that measures the amount of iron in the blood and the blood's ability to bind and transport iron. |
1,813 | $9 | $125 |
| Chronic care management, first 20 min/month This service covers the first 20 minutes of clinical staff time directed by a healthcare professional each calendar month to manage chronic conditions. |
1,625 | $55 | $150 |
| 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. |
1,618 | $5 | $50 |
| Immunoglobulin level test A blood test that measures the level of gammaglobulins, which are immune system proteins. |
1,563 | $9 | $45 |
| 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. |
1,333 | $165 | $940 |
| Vitamin B-12 level test A blood test that measures the amount of vitamin B-12 in your body. |
1,226 | $15 | $75 |
| Manual red blood cell count A laboratory test that manually counts the number of red blood cells in a blood sample. |
1,090 | $4 | $15 |
| Folic acid level test A blood test that measures the amount of folic acid in the serum. |
1,043 | $14 | $70 |
| Carcinoembryonic antigen (CEA) level test A blood test that measures the level of carcinoembryonic antigen (CEA) protein. This test is used to monitor certain types of cancer. |
875 | $19 | $60 |
| 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. |
827 | $13 | $190 |
| Immunoglobulin light chain measurement A blood test that measures the levels of immunoglobulin light chains, which are proteins produced by plasma cells. |
704 | $17 | $70 |
| PSA test (prostate cancer screening) | 451 | $18 | $50 |
| Thyroid stimulating hormone (TSH) test A blood test that measures the level of thyroid stimulating hormone to evaluate thyroid function. |
433 | $16 | $150 |
| Immunologic analysis for detection of tumor antigen, quantitative; ca 15-3 | 388 | $20 | $70 |
| 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. |
356 | $22 | $110 |
| Flow cytometry DNA or cell analysis, first marker A laboratory test that uses a laser to analyze cells or DNA by detecting a specific marker on the cell surface or within the cell. |
343 | $73 | $300 |
| Serum protein measurement A blood test that measures the total amount of protein in the serum. It helps evaluate overall health and nutritional status. |
335 | $10 | $60 |
| Intravenous chemotherapy infusion, 1 hour or less Administration of chemotherapy medication directly into a vein. The procedure takes one hour or less to complete. |
322 | $129 | $550 |
| Intravenous injection of additional new drug or substance Administration of an additional new medication or substance directly into a vein. |
319 | $15 | $95 |
| Vitamin D level test A blood test to measure the amount of Vitamin D-3 in your body. |
309 | $29 | $150 |
| Vitamin B-12 injection An injection of vitamin B-12 (cyanocobalamin) with a dose of up to 1000 mcg. |
293 | $1 | $10 |
| Principal care management for high-risk disease, first 30 minutes This service covers the initial 30 minutes of clinical staff time per calendar month to manage a single high-risk disease. It is directed by a healthcare professional. |
263 | $56 | $226 |
| 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. |
254 | $28 | $120 |
| Non-hormonal chemotherapy injection This procedure involves administering non-hormonal anti-neoplastic chemotherapy medication via injection into the skin or muscle tissue. |
242 | $72 | $220 |
| Beta-2 microglobulin level test A blood test that measures the level of beta-2 microglobulin, a protein produced by cells in the body. |
216 | $16 | $50 |
| 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. |
193 | $62 | $500 |
| Free thyroxine (T4) test A blood test that measures the level of free thyroxine, a thyroid hormone, in the bloodstream. |
163 | $9 | $30 |
| Total cortisol level test A blood test that measures the total amount of cortisol hormone in your body. Cortisol is a hormone produced by the adrenal glands. |
160 | $16 | $75 |
| Intravenous drug injection A procedure involving the administration of a medication or substance directly into a vein. |
155 | $36 | $190 |
| Diphenhydramine injection, up to 50 mg An injection of diphenhydramine hydrochloride, an antihistamine medication, administered in a dose of up to 50 milligrams. |
152 | $1 | $10 |
| Thyroxine (T4) level test A blood test that measures the total amount of thyroxine, a thyroid hormone, in your body. |
140 | $7 | $35 |
| Erythrocyte sedimentation rate (ESR) test A blood test that measures how quickly red blood cells settle in a test tube to detect inflammation in the body. This specific method is performed manually rather than using an automated machine. |
137 | $4 | $20 |
| 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. |
124 | $84 | $300 |
| 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. |
118 | $12 | $80 |
| 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. |
112 | $111 | $380 |
| Total testosterone level test A blood test that measures the total amount of testosterone in your body. This hormone is important for various bodily functions in both men and women. |
110 | $25 | $300 |
| Haptoglobin level test A blood test that measures the amount of haptoglobin, a protein in the serum. It helps evaluate red blood cell breakdown. |
105 | $12 | $75 |
| 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. |
105 | $4 | $30 |
| Hemoglobin A1c test (diabetes monitoring) A blood test that measures your average blood sugar levels over the past two to three months. |
102 | $10 | $50 |
| Urinalysis, manual A manual laboratory examination of a urine sample to check for various substances and cells. |
101 | $3 | $50 |
| 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. |
94 | $31 | $200 |
| Additional hour of intravenous infusion This code represents each additional hour of intravenous infusion beyond the initial hour for therapy, prevention, or diagnosis. |
90 | $19 | $75 |
| Immunologic analysis for detection of tumor antigen, quantitative; ca 125 | 83 | $20 | $50 |
| Venipuncture for blood collection A procedure to draw blood from a vein for medical testing or analysis. |
79 | $91 | $400 |
| Acute hepatitis panel A blood test that screens for markers of acute viral hepatitis infection. |
69 | $47 | $175 |
| 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. |
64 | $64 | $420 |
| Additional hour of intravenous chemotherapy This code represents the administration of chemotherapy medication into a vein for each additional hour beyond the initial period. |
63 | $27 | $125 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
62 | $36 | $40 |
| Normal saline infusion, 250 cc Administration of 250 cubic centimeters of normal saline solution into a vein. This procedure involves the intravenous delivery of a sterile saltwater fluid. |
62 | $0 | $20 |
| New patient office visit, complex (60-74 min) | 58 | $188 | $780 |
| CA 19-9 tumor antigen test A blood test that measures the level of CA 19-9, a substance that can be found in the blood of some people with cancer. This quantitative analysis detects and measures the specific tumor antigen. |
55 | $20 | $50 |
| Office visit for established patient An office visit for an existing patient that may not require the healthcare professional to be present. |
55 | $22 | $100 |
| Normal saline infusion, 500 ml Administration of sterile normal saline solution through an intravenous line. This procedure involves the infusion of a 500 ml unit of the solution. |
55 | $1 | $10 |
| 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. |
48 | $2 | $10 |
| Basic blood chemical test (calcium, ionized) A blood test that measures basic chemical levels, specifically including calcium and ionized calcium. |
47 | $13 | $75 |
| Coagulation function measurement, d-dimer; quantitative | 44 | $10 | $75 |
| 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. |
43 | $155 | $595 |
| Chronic care management, additional 20 min/month This service covers an extra 20 minutes of clinical staff time directed by a healthcare professional for managing two or more chronic conditions each calendar month. |
42 | $41 | $175 |
| Flu vaccine, high-dose High-dose seasonal influenza vaccine for adults aged 65 and older. Contains four times the antigen of standard-dose flu vaccines (60 mcg per strain), split-virus formulation, preservative-free, single-dose syringe. |
40 | $72 | $175 |
| Lipid panel (cholesterol and triglycerides) A blood test that measures cholesterol and triglyceride levels. |
39 | $13 | $300 |
| Red blood cell concentration measurement A laboratory test that measures the concentration of red blood cells in the blood. |
39 | $2 | $50 |
| Injection, fosnetupitant 235 mg and palonosetron 0.25 mg | 38 | $335 | $2,100 |
| IgE level test A blood test that measures the level of immunoglobulin E (IgE) proteins in the immune system. |
36 | $16 | $50 |
| Subcutaneous or intramuscular chemotherapy injection This procedure involves administering anti-cancer hormonal medication through an injection into the tissue under the skin or into a muscle. |
35 | $33 | $120 |
| Direct bilirubin level test A blood test that measures the amount of direct bilirubin in your body. Direct bilirubin is the form of the waste product processed by the liver. |
23 | $5 | $25 |
| High-sensitivity C-reactive protein test A blood test that measures high-sensitivity C-reactive protein to detect infection or inflammation. |
23 | $12 | $50 |
| Parathyroid hormone level test A blood test that measures the amount of parathyroid hormone in your body. This hormone helps regulate calcium levels in the blood and bones. |
22 | $40 | $150 |
| Rheumatoid factor level | 22 | $6 | $30 |
| Alpha-fetoprotein (AFP) level test A blood test that measures the amount of alpha-fetoprotein in the serum. This test is used to monitor certain health conditions. |
21 | $16 | $40 |
| Blood glucose level test A test that measures the amount of sugar in your blood. |
21 | $4 | $50 |
| Quadrivalent influenza vaccine, cell-culture derived A flu shot containing four strains of influenza virus, produced using cell culture technology rather than eggs. This formulation is free from preservatives and antibiotics. |
21 | $33 | $90 |
| Irrigation of implanted venous access device This procedure involves flushing an implanted venous access device to clear blockages or maintain patency. It ensures the device remains functional for delivering medications or fluids. |
21 | $25 | $260 |
| Lyme disease antibody test A blood test that checks for antibodies to the bacteria that causes Lyme disease. |
18 | $17 | $250 |
| Bone marrow biopsy and aspiration A procedure to remove a small sample of bone marrow and liquid for laboratory testing. The sample is analyzed to help diagnose various medical conditions. |
17 | $170 | $875 |
| Blood smear for iron A laboratory test that examines a drop of blood under a microscope to evaluate iron levels and red blood cell characteristics. |
17 | $7 | $20 |
| Cardiac enzyme level (CK-MB) test A blood test that measures the total level of creatine kinase, specifically the cardiac enzyme fraction, to help evaluate heart muscle damage. |
16 | $6 | $25 |
| Coagulation assessment blood test A blood test that measures how long it takes for blood to clot. The sample can be plasma or whole blood. |
15 | $6 | $35 |
| Drug screening test A laboratory test that uses a chemistry analyzer to detect the presence of drugs in a sample. |
14 | $61 | $250 |
| Total bilirubin level test A blood test that measures the total amount of bilirubin, a waste product from the breakdown of red blood cells, in your body. |
13 | $5 | $15 |
| 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. |
13 | $162 | $410 |
| Stool test for blood to screen for colon tumors A test that analyzes a stool sample to detect hidden blood, which is used to screen for colon tumors. |
12 | $4 | $10 |
| HIV-1 antigen and HIV-1/2 antibody test A laboratory test using immunoassay techniques to detect HIV-1 antigens and antibodies for both HIV-1 and HIV-2. |
12 | $24 | $96 |
| Flow cytometry, 16 or more markers A laboratory test that uses lasers to analyze cells or DNA using 16 or more different markers. This technique helps identify and characterize specific cell types based on their physical and chemical properties. |
12 | $52 | $300 |
| Transitional care management, high complexity Coordination of care for a patient transitioning from a short-term hospital stay or other facility to home or another care setting. This service addresses a high-complexity medical problem. |
12 | $262 | $580 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2024)
All-time payments by company (2018-2024) ›
Associated products mentioned in payments ›
Most payments (90%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
11.6 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. Avvento is a mixed practice specialist, with above-average Medicare volume (top 2% in NY), 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
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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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