Internal Medicine, Rheumatology · Waukesha, WI
NPI
1407857048
Since 2005
Specialty
Internal Medicine, Rheumatology
Code 207RR0500X
Group practices
1
Medicare group memberships
Hospitals
1
Hospital affiliations
20800 Swenson Dr Ste 175
Waukesha, WI, 53186
Phone (262) 785-0777
Groups this clinician bills Medicare through
Medicare paid, 2024
$989K
87,307 services
Medicare patients, 2024
370
Average age 74
Drug cost, 2024
$2.1M
3,296 prescriptions
Company payments, 2025
$118
From 4 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Mark E Pearson was code J1602 (injection, golimumab, 1 mg, for intravenous use), 37,600 times for 77 patients. In total Mark E Pearson billed 87,307 services in 59 codes, and Medicare paid $989K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2026-02-02.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| J1602 Injection, golimumab, 1 mg, for intravenous use | Office | 37,600 | 77 | $9.08 | $341K |
| J0129 Injection, abatacept, 10 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered) | Office | 4,825 | 21 | $33.94 | $164K |
| J1745 Injection, infliximab, excludes biosimilar, 10 mg | Office | 3,520 | 23 | $24.87 | $88K |
| 36415 Venipuncture Blood Collection | Office | 939 | 329 | $8.57 | $8,052 |
| 85025 Blood Count | Office | 917 | 318 | $7.57 | $6,946 |
| 84450 Clinical Chemistry | Office | 911 | 313 | $5.06 | $4,607 |
| 82565 Clinical Chemistry | Office | 911 | 313 | $5.00 | $4,553 |
| 82040 Clinical Chemistry | Office | 911 | 313 | $4.83 | $4,398 |
| 84460 Clinical Chemistry | Office | 910 | 313 | $5.17 | $4,702 |
| J0897 Injection, denosumab, 1 mg | Office | 900 | 11 | $20.59 | $19K |
| 99214 Office E&M - Established | Office | 450 | 231 | $79.79 | $36K |
| 85652 Clinical Chemistry | Office | 429 | 268 | $2.62 | $1,126 |
| 86140 Clinical Chemistry | Office | 428 | 267 | $5.03 | $2,154 |
| G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's | Office | 408 | 230 | $11.11 | $4,535 |
| 96413 Chemotherapy Administration | Office | 385 | 142 | $88.80 | $34K |
By year: 2022 $1.3M for 98,464 services; 2023 $1.1M for 95,219 services; 2024 $989K for 87,307 services.
Lab tests billed to Medicare, 2024
| Test code | Tests | Patients | Paid per test | Medicare paid |
|---|---|---|---|---|
| 36415 Venipuncture Blood Collection | 939 | 329 | $8.57 | $8,052 |
| 85025 Blood Count | 917 | 318 | $7.57 | $6,946 |
| 84450 Clinical Chemistry | 911 | 313 | $5.06 | $4,607 |
| 82040 Clinical Chemistry | 911 | 313 | $4.83 | $4,398 |
| 82565 Clinical Chemistry | 911 | 313 | $5.00 | $4,553 |
| 84460 Clinical Chemistry | 910 | 313 | $5.17 | $4,702 |
| 85652 Clinical Chemistry | 429 | 268 | $2.62 | $1,126 |
| 86140 Clinical Chemistry | 428 | 267 | $5.03 | $2,154 |
| 82784 Immunoassay | 189 | 61 | $8.96 | $1,694 |
| 86160 Immunoassay | 72 | 31 | $11.76 | $847 |
Medicare prescription drug claims, 2024
In 2024, the drug Mark E Pearson prescribed most often to Medicare patients was Methotrexate (Methotrexate Sodium), with 1,178 prescriptions and refills. In total Mark E Pearson wrote 3,296 Medicare prescriptions that cost $2.1M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Methotrexate Methotrexate Sodium | 1,178 | 2,803 | 286 | $32K |
| Prednisone Generic | 410 | 707 | 126 | $2,635 |
| Hydroxychloroquine Sulfate Generic | 326 | 867 | 93 | $18K |
| Folic Acid Generic | 258 | 640 | 68 | $2,678 |
| Allopurinol Generic | 153 | 408 | 34 | $1,691 |
| Leflunomide Generic | 149 | 331 | 38 | $7,001 |
| Enbrel Sureclick Etanercept | 64 | 69 | Under 11 | $540K |
| Meloxicam Generic | 63 | 166 | 22 | $399 |
| Humira(Cf) Pen Adalimumab | 59 | 66 | Under 11 | $552K |
| Leucovorin Calcium Generic | 51 | 105 | 13 | $1,007 |
| Methylprednisolone Generic | 51 | 51 | 33 | $290 |
| Tramadol Hcl Generic | 50 | 56 | Under 11 | $302 |
| Celecoxib Generic | 48 | 87 | 12 | $1,843 |
| Sulfasalazine Generic | 32 | 62 | Under 11 | $709 |
| Diclofenac Sodium Generic | 31 | 63 | Under 11 | $511 |
Brand drugs: - claims; generic drugs: 2,967 claims; opioid claims: 77.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Mark E Pearson $118 ($118 in general payments such as food, travel and fees) from 4 companies. The largest payer was Abbvie Inc. with $41.02.
Official US government data on Original Medicare services, Medicare prescription drug plans and the payments drug and device companies must report. Services with fewer than 11 patients and drugs with fewer than 11 claims are not published. Procedure codes are shown by number with their public category.