Dr. Sherif Rezk, M.D.
What this data tells you about Dr. Rezk
Dr. Sherif Rezk is a pathology - anatomic specialist in Orange, CA, with 18 years of NPI registration. Based on federal Medicare data, Dr. Rezk performed 19,770 Medicare services across 8,605 unique beneficiaries.
Between the years covered by Open Payments, Dr. Rezk received a total of $26 from 1 pharmaceutical and/or device company across 1 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in pathology - anatomic. 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. Rezk 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 |
|---|---|---|---|
| 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. |
6,519 | $8 | $52 |
| Comprehensive metabolic blood panel A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers. |
4,692 | $10 | $69 |
| 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. |
1,156 | $6 | $40 |
| Screening test for antibody to noninfectious agent A laboratory test that screens for the presence of antibodies produced in response to a noninfectious agent. |
1,070 | $14 | $75 |
| Magnesium level test A blood test to measure the amount of magnesium in your body. This helps check for magnesium deficiency or excess. |
747 | $7 | $45 |
| Tissue staining for diagnosis, additional An extra laboratory procedure to apply special stains to tissue slides for detailed examination. |
730 | $24 | $130 |
| Basic metabolic blood panel A blood test that measures a group of basic chemicals, including total calcium levels. |
689 | $8 | $55 |
| 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. |
670 | $5 | $31 |
| Special tissue stain and interpretation A laboratory test using special stains to examine tissue samples, including the pathologist's review and written report of the findings. |
504 | $10 | $50 |
| Platelet aggregation function test A blood test that measures how well platelets clump together. It evaluates the function of platelets in the blood clotting process. |
417 | $14 | $107 |
| Complete blood count (CBC), automated An automated laboratory test that measures the levels of red blood cells, white blood cells, and platelets in the blood. |
362 | $6 | $43 |
| 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. |
319 | $71 | $407 |
| Tissue pathology examination, moderate complexity A laboratory test where a pathologist examines tissue samples under a microscope to analyze cellular details. This intermediate complexity procedure involves specialized techniques to identify abnormalities in the tissue. |
295 | $31 | $173 |
| Additional manual multiplex genetic stain A microscopic genetic analysis performed manually using an additional multiplex stain procedure on tissue. |
282 | $54 | $288 |
| 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. |
196 | $4 | $29 |
| Antibody test for noninfectious agent A laboratory test that measures the level of antibodies produced in response to a noninfectious agent. |
177 | $14 | $75 |
| Tissue staining for diagnosis, initial A laboratory test where special stains are applied to tissue slides to help examine the cells and identify specific characteristics. |
145 | $29 | $170 |
| Manual microscopic genetic analysis of tumor A laboratory test that uses a microscope to manually examine tumor tissue for genetic changes. |
125 | $36 | $249 |
| Tissue preparation to remove calcium A laboratory procedure that removes calcium from a tissue sample to prepare it for microscopic examination. |
123 | $10 | $58 |
| Bone marrow smear interpretation A laboratory review of a bone marrow sample slide to examine cell structure and identify abnormalities. |
122 | $41 | $222 |
| Genetic test interpretation and report A healthcare provider reviews the results of genetic testing and provides a written report explaining the findings. |
102 | $28 | $151 |
| Urine total protein level A laboratory test that measures the total amount of protein present in a urine sample. |
62 | $4 | $24 |
| Creatinine test (kidney function) A blood test that measures the amount of creatinine to assess kidney function or detect muscle injury. |
61 | $5 | $34 |
| Genetic sequencing localization, initial procedure This procedure involves the initial process of localizing genetic sequencing. It identifies the specific location of genetic material for further analysis. |
40 | $37 | $236 |
| Manual microscopic genetic analysis of tissue A laboratory test that manually examines tissue samples under a microscope to analyze genetic material. This initial procedure involves direct visual inspection to identify specific genetic characteristics. |
38 | $36 | $260 |
| Hemoglobin electrophoresis test A blood test that separates and measures different types of hemoglobin using an electrical charge. It helps identify abnormal hemoglobin variants or imbalances. |
33 | $15 | $75 |
| Crystal identification from tissue or body fluid Laboratory analysis to identify crystals found in tissue samples or body fluids. |
33 | $14 | $79 |
| Moderately high complexity pathology tissue examination A laboratory test where a pathologist examines tissue samples under a microscope to analyze cellular details. This specific level of complexity involves a moderate to high degree of technical skill and interpretation. |
20 | $70 | $383 |
| Surgical pathology consultation on referred slides A pathologist reviews and reports on tissue slides that were prepared at another facility. This service provides a second opinion or expert analysis of the existing samples. |
15 | $72 | $382 |
| Red blood cell concentration measurement A laboratory test that measures the concentration of red blood cells in the blood. |
13 | $2 | $15 |
| Hemoglobin blood test A blood test that measures the amount of hemoglobin, the protein in red blood cells that carries oxygen. |
13 | $2 | $15 |
Industry Payment Transparency
Open Payments through 2022 ↗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 (2022)
Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
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 2022 |
| 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. Rezk is a mixed practice specialist, with above-average Medicare volume (top 1% in CA), with low-engagement industry engagement, with 18 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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