Medicare Enrolled
Dr. Mark Harris, M.D.
Rheumatology · Wilmington, NC
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
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. Harris 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. Harris
Dr. Mark Harris is a rheumatology specialist in Wilmington, NC, with 21 years of NPI registration. Based on federal Medicare data, Dr. Harris performed 241,490 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Harris received a total of $29,963 from 19 pharmaceutical and/or device companies across 59 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Harris 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.
✓ 21 years of NPI registration
▲ Top 3% volume in NC
$29,963 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗241,490
Medicare services
Top 3% in NC for rheumatology
Not available
Unique patients (not deduplicated)
$12
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
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 |
|---|---|---|---|
| Tocilizumab injection (Actemra) | 114,560 | $5 | $7 |
| Abatacept infusion (Orencia) An injection of abatacept administered under the direct supervision of a physician. This code is used for Medicare when the drug is not self-administered. |
39,400 | $33 | $80 |
| Golimumab infusion (Simponi Aria) Administration of golimumab medication directly into a vein. This code specifies the dosage amount of 1 milligram for intravenous delivery. |
32,500 | $10 | $45 |
| Certolizumab injection (Cimzia) An injection of certolizumab pegol administered under the direct supervision of a physician. |
31,600 | $4 | $18 |
| Infliximab infusion (Remicade) An injection of infliximab, excluding biosimilar versions, administered in a 10 mg dose. |
5,710 | $26 | $138 |
| Denosumab injection (Prolia/Xgeva) | 3,840 | $18 | $30 |
| Infliximab-abda biosimilar injection, 10 mg This code represents the administration of a 10 mg dose of infliximab-abda, a biosimilar medication. It covers the injection of this specific pharmaceutical product. |
2,300 | $30 | $85 |
| 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. |
1,176 | $8 | $21 |
| 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. |
1,134 | $5 | $45 |
| Intravenous chemotherapy infusion, 1 hour or less Administration of chemotherapy medication directly into a vein. The procedure takes one hour or less to complete. |
1,090 | $98 | $330 |
| 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. |
1,082 | $88 | $150 |
| Liver function blood test panel | 1,079 | $8 | $60 |
| Blood creatinine level test A blood test that measures the amount of creatinine, a waste product from muscle wear and tear, to help assess kidney function. |
1,015 | $5 | $21 |
| Autoimmune disorder antibody test A laboratory test that measures antibodies in the blood to help assess for autoimmune disorders. |
893 | $18 | $35 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
512 | $7 | $7 |
| Non-hormonal chemotherapy injection This procedure involves administering non-hormonal anti-neoplastic chemotherapy medication via injection into the skin or muscle tissue. |
264 | $54 | $120 |
| Basic metabolic blood panel A blood test that measures a group of basic chemicals, including total calcium levels. |
262 | $8 | $38 |
| Vitamin D level test A blood test to measure the amount of Vitamin D-3 in your body. |
231 | $29 | $63 |
| 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. |
229 | $40 | $85 |
| 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. |
229 | $5 | $20 |
| Tuberculosis test, enumeration of t-cells A blood test that counts T-cells to help detect tuberculosis infection. |
201 | $97 | $125 |
| 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. |
170 | $11 | $50 |
| X-ray of hand, 2 views An X-ray imaging test of the hand using two different angles to visualize the bones and joints. |
166 | $15 | $40 |
| Total calcium level test A blood test that measures the total amount of calcium in your body. |
153 | $5 | $21 |
| 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. |
127 | $58 | $95 |
| 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. |
121 | $13 | $30 |
| Measurement of dna antibody, single stranded | 121 | $12 | $30 |
| X-ray of foot, 2 views An X-ray imaging test of the foot using two different angles to create pictures of the bones and joints. |
105 | $14 | $40 |
| Additional hour of intravenous chemotherapy This code represents the administration of chemotherapy medication into a vein for each additional hour beyond the initial period. |
99 | $21 | $50 |
| Complete ultrasound scan of joint An ultrasound exam that uses sound waves to create detailed images of a joint. This procedure allows for the visualization of the joint's internal structures. |
98 | $8 | $200 |
| Rheumatoid factor level | 88 | $6 | $12 |
| Bone density scan (DEXA) A test that uses low-dose X-rays to measure bone mineral density in the hip, pelvis, and spine. It helps assess bone strength and risk of fractures. |
84 | $36 | $150 |
| 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. |
82 | $4 | $20 |
| Rheumatoid arthritis antibody test A blood test to measure antibodies used in assessing rheumatoid arthritis. |
79 | $13 | $28 |
| Methylprednisolone acetate injection, 80 mg An injection of 80 mg of methylprednisolone acetate, a corticosteroid medication. |
72 | $9 | $20 |
| Complement and antigen measurement A laboratory test to measure levels of complement proteins and antigens in the blood. |
67 | $12 | $55 |
| Complement function test A blood test that measures the activity of complement proteins, which are part of the immune system. |
67 | $12 | $55 |
| Joint injection, major joint Removal of fluid from a large joint and/or injection of medication into the joint space. |
46 | $41 | $125 |
| 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. |
43 | $6 | $26 |
| 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. |
41 | $123 | $185 |
| Methylprednisolone injection, up to 40 mg An injection of methylprednisolone sodium succinate, a corticosteroid medication, administered in a dose of up to 40 mg. |
39 | $3 | $40 |
| Total T3 thyroid hormone test A blood test that measures the total amount of triiodothyronine (T3) hormone in your body. T3 is a thyroid hormone that helps regulate metabolism and energy levels. |
37 | $14 | $65 |
| Intravenous injection of additional new drug or substance Administration of an additional new medication or substance directly into a vein. |
37 | $12 | $65 |
| 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. |
35 | $19 | $55 |
| 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. |
33 | $18 | $55 |
| Free thyroxine (T4) test A blood test that measures the level of free thyroxine, a thyroid hormone, in the bloodstream. |
33 | $9 | $115 |
| Thyroid stimulating hormone (TSH) test A blood test that measures the level of thyroid stimulating hormone to evaluate thyroid function. |
33 | $16 | $70 |
| 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. |
32 | $130 | $180 |
| Vitamin B-12 level test A blood test that measures the amount of vitamin B-12 in your body. |
21 | $15 | $57 |
| X-ray of lower and sacral spine, 2-3 views An X-ray imaging test that captures 2 to 3 views of the lower back and sacral spine to visualize the bones and joints in this area. |
20 | $20 | $72 |
| Methylprednisolone acetate injection, 20 mg A 20 mg injection of methylprednisolone acetate, a corticosteroid medication. This code specifies the drug and dosage administered. |
20 | $3 | $5 |
| X-ray of upper spine, 6 or more views An X-ray imaging test of the upper spine using six or more separate views to capture detailed images of the bones and structures in that area. |
14 | $36 | $90 |
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. These counts do not measure clinical quality or years of experience.
32.6% high complexity
63.3% medium
4.1% routine
Industry Payment Transparency
Open Payments through 2024 ↗$29,963
Total received (2018-2024)
Avg $4,280/year across 7 years
Top 13% in NC for rheumatology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
19
Companies
59
Payment records
Payments are publicly reported; disclosure does not establish legality · Not evidence of wrongdoing · How to interpret →
Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$268
2023
$113
2022
$18
2021
$3,909
2020
$17,515
2019
$246
2018
$7,893
Payments by company (2024)
Janssen Biotech, Inc.
$117
ABBVIE INC.
$56
Fresenius Kabi USA, LLC
$23
GENZYME CORPORATION
$23
Boehringer Ingelheim Pharmaceuticals, Inc.
$18
E.R. Squibb & Sons, L.L.C.
$16
Amgen Inc.
$14
Top 3 companies account for 73.3% of 2024 payments
All-time payments by company (2018-2024) ›
United Rheumatology
$28,750
AbbVie, Inc.
$210
Genentech USA, Inc.
$191
Janssen Biotech, Inc.
$157
ABBVIE INC.
$98
UCB, Inc.
$95
Amgen Inc.
$92
Boehringer Ingelheim Pharmaceuticals, Inc.
$84
E.R. Squibb & Sons, L.L.C.
$56
Novartis Pharmaceuticals Corporation
$46
Horizon Therapeutics plc
$28
GlaxoSmithKline, LLC.
$24
AbbVie Inc.
$24
Fresenius Kabi USA, LLC
$23
GENZYME CORPORATION
$23
Ultragenyx Pharmaceutical Inc.
$18
Flexion Therapeutics, Inc.
$17
Lilly USA, LLC
$14
Merck Sharp & Dohme Corporation
$14
Top 3 companies account for 97.3% of all-time payments
Associated products mentioned in payments ›
Actemra · BENLYSTA · COSENTYX · CYLTEZO · Cimzia · Crysvita · EVENITY · Enbrel · Humira · IDACIO · KEVZARA · KRYSTEXXA · OFEV · ORENCIA · Prolia · RINVOQ · Rinvoq · Rituxan · SIMPONI ARIA · SKYRIZI · TALTZ · TREMFYA · Zilretta
Should you be concerned? Industry payments are disclosed through CMS Open Payments. Disclosure alone does not establish their purpose, legality, or effect on care. 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 →
Geographic Context
Rheumatologists in nearby ZIP areas
12
County median income
$72,892
Nearest hospital to ZIP centroid (approximate)
WILMINGTON TREATMENT CENTER
0.0 mi
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not included | 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. Harris is a mixed practice specialist, with above-average Medicare volume (top 3% in NC), with 21 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. Harris experienced with tocilizumab injection (actemra)?
Based on Medicare claims data, Dr. Harris performed 114,560 tocilizumab injection (actemra) services. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Dr. Harris receive payments from pharmaceutical companies?
Yes. Dr. Harris received a total of $29,963 from 19 companies across 59 payment records. A record can group multiple payments. These transfers are publicly disclosed through CMS Open Payments. Disclosure alone does not establish their legality or effect on care. 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. Harris's costs compare to other rheumatologists in Wilmington?
Dr. Harris's average Medicare payment per service is $12. 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. Harris) 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 the presence of registry, enrollment, activity or payment records, not verified experience or clinical quality. 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?
Source publication dates and the snapshots loaded on this site can differ. Rebuilding a page does not refresh its source records. Check the Medicare reporting year and the payment interval shown above; consult the linked official sources for newer releases and current registry details. See our data freshness policy →
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About this page
This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: 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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