Medicare Enrolled
Dr. Asaf Klein, M.D.
Rheumatology · Hewlett, NY
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. Klein 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. Klein
Dr. Asaf Klein is a rheumatology specialist in Hewlett, NY, with 15 years of NPI registration. Based on federal Medicare data, Dr. Klein performed 96,777 Medicare services across 13,015 unique beneficiaries.
Between the years covered by Open Payments, Dr. Klein received a total of $25,788 from 48 pharmaceutical and/or device companies across 1324 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in rheumatology. 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. Klein 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.
✓ 15 years in practice
▲ Top 5% volume in NY
$25,788 industry payments
Medicare Practice Summary
Medicare Utilization ↗96,777
Medicare services
Top 5% in NY for rheumatology
13,015
Unique beneficiaries
$9
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~6,452 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 |
|---|---|---|---|
| Certolizumab injection (Cimzia) An injection of certolizumab pegol administered under the direct supervision of a physician. |
44,800 | $4 | $13 |
| Joint lubricant injection (Gel-Syn) An injection of hyaluronan or its derivative into a joint space to supplement joint fluid. |
14,616 | $1 | $3 |
| Denosumab injection (Prolia/Xgeva) | 9,122 | $19 | $33 |
| Joint lubricant injection (Durolane) An injection of hyaluronan or its derivative, specifically Durolane, administered directly into a joint space. |
2,822 | $5 | $20 |
| Autoimmune disorder antibody test A laboratory test that measures antibodies in the blood to help assess for autoimmune disorders. |
2,322 | $18 | $41 |
| Immunoglobulin level test A blood test that measures the level of gammaglobulins, which are immune system proteins. |
1,602 | $9 | $28 |
| 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. |
877 | $111 | $200 |
| Complement and antigen measurement A laboratory test to measure levels of complement proteins and antigens in the blood. |
742 | $12 | $40 |
| Steroid injection (triamcinolone) A 10 mg injection of triamcinolone acetonide, a corticosteroid medication. This code specifies the drug and dosage administered. |
730 | $1 | $10 |
| COVID-19 antibody test A blood test that measures antibodies to severe acute respiratory syndrome coronavirus 2 (COVID-19). It detects the presence of immune response markers to the virus. |
695 | $41 | $85 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
675 | $8 | $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. |
674 | $6 | $22 |
| 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. |
673 | $6 | $25 |
| 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. |
673 | $4 | $20 |
| C-reactive protein test (inflammation marker) A blood test that measures the level of C-reactive protein to detect the presence of infection or inflammation in the body. |
673 | $5 | $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. |
672 | $8 | $40 |
| 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. |
669 | $4 | $35 |
| 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. |
666 | $5 | $20 |
| Basic metabolic blood panel A blood test that measures a group of basic chemicals, including total calcium levels. |
663 | $8 | $30 |
| Nucleotidase 5' enzyme level test A blood test that measures the level of the nucleotidase 5' enzyme. This test is used to evaluate enzyme activity in the body. |
645 | $11 | $35 |
| Autoimmune disorder screening test A laboratory test used to screen for the presence of autoimmune disorders. |
598 | $12 | $45 |
| Rheumatoid arthritis antibody test A blood test to measure antibodies used in assessing rheumatoid arthritis. |
593 | $13 | $75 |
| Rheumatoid factor analysis | 589 | $6 | $45 |
| Beta 2 glycoprotein 1 antibody (autoantibody) measurement | 426 | $25 | $45 |
| Cardiolipin antibody (tissue antibody) measurement | 426 | $25 | $45 |
| Immunoassay substance analysis, multiple step method A laboratory test that uses an immunoassay technique to analyze a substance. The process involves multiple steps to detect or measure the target material. |
368 | $11 | $75 |
| Limited ultrasound of joint or extremity A focused ultrasound exam of a specific joint or other structure in the arm or leg, excluding blood vessels. |
367 | $38 | $200 |
| Interleukin-6 level test A blood test that measures the amount of interleukin-6, a protein involved in the body's immune response and inflammation. |
356 | $17 | $44 |
| Ultrasound-guided large joint aspiration or injection This procedure uses ultrasound imaging to guide the removal of fluid from or the injection of medication into a large joint. |
323 | $78 | $250 |
| Liver function blood test panel | 310 | $8 | $75 |
| Urinalysis, manual A manual laboratory examination of a urine sample to check for various substances and cells. |
298 | $3 | $10 |
| Thyroid hormone evaluation A blood test to measure the levels of thyroid hormones in the body. This evaluation helps assess how well the thyroid gland is functioning. |
290 | $6 | $35 |
| Thyroxine (T4) level test A blood test that measures the total amount of thyroxine, a thyroid hormone, in your body. |
289 | $7 | $20 |
| Thyroid stimulating hormone (TSH) test A blood test that measures the level of thyroid stimulating hormone to evaluate thyroid function. |
289 | $16 | $75 |
| Alkaline phosphatase level test A blood test that measures the level of alkaline phosphatase, an enzyme found in the liver and bones. |
288 | $5 | $25 |
| Liver enzyme (SGOT) level test A blood test that measures the level of the liver enzyme SGOT to help assess liver health. |
285 | $5 | $15 |
| Liver enzyme (SGPT) level test A blood test that measures the level of the liver enzyme SGPT to assess liver function. |
285 | $5 | $15 |
| Albumin level test A blood test that measures the amount of albumin, a protein made by the liver, in your body. |
284 | $5 | $25 |
| Autoimmune disorder antibody titer test A blood test that measures the level of specific antibodies to help assess autoimmune disorders. |
274 | $11 | $35 |
| 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. |
272 | $40 | $110 |
| 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. |
257 | $5 | $25 |
| 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. |
257 | $5 | $12 |
| Vitamin D level test A blood test to measure the amount of Vitamin D-3 in your body. |
257 | $29 | $105 |
| 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. |
209 | $13 | $75 |
| Non-hormonal chemotherapy injection This procedure involves administering non-hormonal anti-neoplastic chemotherapy medication via injection into the skin or muscle tissue. |
206 | $72 | $150 |
| Epstein-Barr virus antibody test A blood test that measures antibodies to the Epstein-Barr virus, also known as the mononucleosis virus. |
186 | $18 | $50 |
| DNA antibody test (native or double-stranded) A blood test that measures the level of antibodies targeting native or double-stranded DNA. This test is used to detect the presence of these specific antibodies in the body. |
185 | $13 | $50 |
| Magnesium level test A blood test to measure the amount of magnesium in your body. This helps check for magnesium deficiency or excess. |
178 | $7 | $25 |
| Hemoglobin A1c test (diabetes monitoring) A blood test that measures your average blood sugar levels over the past two to three months. |
167 | $10 | $30 |
| Angiotensin l - converting enzyme (ace) level | 158 | $14 | $41 |
| Lipid panel (cholesterol and triglycerides) A blood test that measures cholesterol and triglyceride levels. |
153 | $13 | $55 |
| LDL cholesterol level test A blood test that measures the amount of low-density lipoprotein (LDL) cholesterol in your blood. LDL is often referred to as "bad" cholesterol. |
153 | $10 | $31 |
| Ferritin level test (iron stores) A blood test that measures the level of ferritin, a protein that stores iron in the body. |
130 | $13 | $50 |
| Haptoglobin level test A blood test that measures the amount of haptoglobin, a protein in the serum. It helps evaluate red blood cell breakdown. |
130 | $12 | $45 |
| Iron level test | 130 | $6 | $45 |
| 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. |
130 | $9 | $45 |
| Lyme disease antibody test A blood test that checks for antibodies to the bacteria that causes Lyme disease. |
125 | $17 | $45 |
| 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. |
123 | $146 | $300 |
| Screening test for antibody to noninfectious agent A laboratory test that screens for the presence of antibodies produced in response to a noninfectious agent. |
118 | $12 | $35 |
| White blood cell antibody identification test A laboratory test used to identify specific antibodies present in the blood that target white blood cells. |
114 | $15 | $50 |
| Immunoglobulin light chain measurement A blood test that measures the levels of immunoglobulin light chains, which are proteins produced by plasma cells. |
96 | $17 | $45 |
| Rheumatoid factor level | 94 | $6 | $25 |
| Mononucleosis screening test A laboratory test used to screen for the presence of mononucleosis. It detects markers associated with the infection. |
93 | $5 | $20 |
| Epstein-Barr virus antibody test, early antigen A blood test that measures antibodies to the early antigen of the Epstein-Barr virus. This analysis helps determine if a person has been exposed to the virus. |
93 | $13 | $45 |
| Epstein-Barr virus antibody test A blood test that checks for antibodies to the Epstein-Barr virus, which causes infectious mononucleosis. |
93 | $15 | $40 |
| Bone density scan (DEXA) of hip, pelvis, and spine This test measures bone density in the hip, pelvis, and spine to assess bone strength. It also includes an assessment for spine fractures. |
89 | $63 | $375 |
| 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. |
70 | $1 | $12 |
| X-ray of hand, minimum of 3 views An X-ray imaging test of the hand that captures at least three different angles to visualize the bones and joints. |
68 | $33 | $65 |
| Microsomal antibody test A blood test that measures the level of microsomal antibodies, which are autoantibodies produced by the immune system. |
59 | $14 | $34 |
| Thyroglobulin antibody blood test A blood test that measures the level of antibodies against thyroglobulin, a protein produced by the thyroid gland. |
59 | $16 | $35 |
| Tuberculosis blood test (gamma interferon) A blood test that measures the immune system's response to tuberculosis bacteria using gamma interferon levels. |
45 | $61 | $140 |
| Drug screening test A laboratory test that uses a chemistry analyzer to detect the presence of drugs in a sample. |
44 | $61 | $400 |
| 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. |
39 | $86 | $150 |
| Knee X-ray, 1-2 views An X-ray imaging test of the knee joint using one to two different angles to visualize the bones and surrounding structures. |
38 | $31 | $66 |
| Intravenous chemotherapy infusion, 1 hour or less Administration of chemotherapy medication directly into a vein. The procedure takes one hour or less to complete. |
38 | $129 | $375 |
| Trabecular bone score interpretation Analysis of bone texture to assess fracture risk. The provider interprets the trabecular bone score and generates a report on the patient's risk of fractures. |
31 | $8 | $25 |
| Vitamin B-12 level test A blood test that measures the amount of vitamin B-12 in your body. |
31 | $15 | $45 |
| Folic acid level test A blood test that measures the amount of folic acid in the serum. |
31 | $14 | $44 |
| Office visit, established patient (10-19 min) An office visit for an existing patient lasting 10 to 19 minutes. The visit involves medical evaluation and management of the patient's condition. |
27 | $54 | $90 |
| Total protein blood test A blood test that measures the total amount of protein in your blood. This test helps evaluate your overall health and nutritional status. |
18 | $4 | $12 |
| Trigger point injection, 1-2 muscles A procedure involving the injection of medication into one or two specific muscles to treat trigger points. |
17 | $50 | $125 |
| Shoulder X-ray, 2+ views An X-ray imaging test of the shoulder joint using at least two different angles to visualize the bones and surrounding structures. |
17 | $30 | $100 |
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.
0.1% high complexity
75.7% medium
24.2% routine
Industry Payment Transparency
Open Payments through 2024 ↗$25,788
Total received (2018-2024)
Avg $3,684/year across 7 years
Top 17% in NY for rheumatology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
48
Companies
1,324
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
$25,376 (98.4%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$312 (1.2%)
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$100 (0.4%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$2,889
2023
$4,021
2022
$4,260
2021
$3,619
2020
$3,462
2019
$4,192
2018
$3,345
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Amgen Inc.
$573
Janssen Biotech, Inc.
$431
Novartis Pharmaceuticals Corporation
$403
GlaxoSmithKline, LLC.
$273
PFIZER INC.
$217
AstraZeneca Pharmaceuticals LP
$206
Lilly USA, LLC
$181
UCB, Inc.
$145
Radius Health, Inc.
$139
ABBVIE INC.
$133
Mallinckrodt Hospital Products Inc.
$68
Bioventus LLC
$47
Boehringer Ingelheim Pharmaceuticals, Inc.
$21
Genentech USA, Inc.
$19
Aurinia Pharma U.S., Inc.
$17
Sandoz Inc.
$14
Top 3 companies account for 48.7% of 2024 payments
All-time payments by company (2018-2024) ›
Amgen Inc.
$4,572
Janssen Biotech, Inc.
$2,555
Lilly USA, LLC
$1,981
PFIZER INC.
$1,695
UCB, Inc.
$1,610
Novartis Pharmaceuticals Corporation
$1,498
GlaxoSmithKline, LLC.
$1,413
ABBVIE INC.
$1,304
AbbVie Inc.
$1,168
AbbVie, Inc.
$924
Radius Health, Inc.
$707
E.R. Squibb & Sons, L.L.C.
$705
AstraZeneca Pharmaceuticals LP
$662
Genentech USA, Inc.
$602
Mallinckrodt Hospital Products Inc.
$508
Aurinia Pharma U.S., Inc.
$423
Regeneron Healthcare Solutions, Inc.
$365
Celgene Corporation
$329
Bioventus LLC
$320
Mallinckrodt Enterprises LLC
$320
Horizon Therapeutics plc
$235
Flexion Therapeutics, Inc.
$203
Antares Pharma, Inc.
$198
GENZYME CORPORATION
$194
Boehringer Ingelheim Pharmaceuticals, Inc.
$133
MEDAC PHARMA, INC.
$126
Cepheid
$100
Alexion Pharmaceuticals, Inc.
$100
Mallinckrodt LLC
$96
SANOFI-AVENTIS U.S. LLC
$93
Takeda Pharmaceuticals U.S.A., Inc.
$86
Actelion Pharmaceuticals US, Inc.
$84
Hikma Pharmaceuticals USA
$79
Merck Sharp & Dohme Corporation
$68
Horizon Pharma plc
$54
Allergan, Inc.
$45
Organon LLC
$31
SOBI, INC
$31
Pacira Therapeutics, Inc.
$24
DePuy Synthes Sales Inc.
$20
Averitas Pharma Inc.
$19
Fresenius Kabi USA, LLC
$18
Pacira Pharmaceuticals Incorporated
$16
ANI Pharmaceuticals, Inc.
$15
MEDEXUS PHARMA, INC.
$15
West-Ward Pharmaceuticals
$15
CATALYST PHARMACEUTICALS, INC.
$14
Sandoz Inc.
$14
Top 3 companies account for 35.3% of all-time payments
Associated products mentioned in payments ›
ACTHAR · AMJEVITA · AVSOLA · Actemra · BENLYSTA · CERDELGA · COSENTYX · Cimzia · Durolane · EVENITY · Enbrel · FIRDAPSE · FORTEO · GELSYN 3 · GELSYN-3 · GENEXPERT · HUMIRA · HYRIMOZ · Humira · IDACIO · ILARIS · INFLECTRA · Iovera · KEVZARA · KEVZARA SARILUMAB INJECTION · KINERET · KRYSTEXXA · LUPKYNIS · LYRICA · Mitigare · OCTAGAM IMMUNE GLOBULIN (HUMAN) · OFEV · OLUMIANT · ORENCIA · ORTHOVISC · Otezla · Otrexup · PENNSAID · PURIFIED CORTROPHIN GEL · Prolia · QUTENZA · RAYOS · REMICADE · RENFLEXIS · RINVOQ · Rasuvo · Rinvoq · Rituxan · SAPHNELO · SIMPONI · SIMPONI ARIA · SKYRIZI · STRENSIQ · SYNVISC-ONE · Strensiq · TALTZ · TAVNEOS · TREMFYA · Tavneos · Tymlos · UBRELVY · UPTRAVI · Uloric · XELJANZ · XYOSTED · Zilretta
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 (98%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Rheumatologists within 10 mi
321
Per 100K population
23.1
County median income
$143,408
Nearest hospital
MOUNT SINAI SOUTH NASSAU
3.0 mi
3.0 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. Klein is a mixed practice specialist, with above-average Medicare volume (top 5% in NY), with low-engagement industry engagement in the top 17% of NY peers, with 15 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. Klein experienced with certolizumab injection (cimzia)?
Based on Medicare claims data, Dr. Klein performed 44,800 certolizumab injection (cimzia) 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. Klein receive payments from pharmaceutical companies?
Yes. Dr. Klein received a total of $25,788 from 48 companies across 1,324 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. Klein's costs compare to other rheumatologists in Hewlett?
Dr. Klein's average Medicare payment per service is $9. 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. Klein) 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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