Internal Medicine, Rheumatology · Gettysburg, PA
NPI
1982667754
Since 2006
Specialty
Internal Medicine, Rheumatology
Code 207RR0500X
Group practices
1
Medicare group memberships
Hospitals
5
Hospital affiliations
40 V-Twin Dr, Suite 205
Gettysburg, PA, 17325
Phone (717) 339-2790
Groups this clinician bills Medicare through
Medicare paid, 2024
$388K
24,173 services
Medicare patients, 2024
584
Average age 73
Drug cost, 2024
$5.8M
4,570 prescriptions
Company payments, 2025
$12K
From 3 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Mark P Diehl was code J0897 (injection, denosumab, 1 mg), 10,080 times for 100 patients. In total Mark P Diehl billed 24,173 services in 23 codes, and Medicare paid $388K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2016-06-13.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| J0897 Injection, denosumab, 1 mg | Office | 10,080 | 100 | $20.29 | $205K |
| 99214 Office E&M - Established | Office | 457 | 333 | $82.61 | $38K |
| 96372 Injection Administration | Office | 221 | 117 | $10.54 | $2,330 |
| 99213 Office E&M - Established | Office | 159 | 151 | $59.43 | $9,449 |
| 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 | 95 | 94 | $12.36 | $1,174 |
| 99204 Office E&M - New | Office | 81 | 81 | $107.22 | $8,684 |
| 99215 Office E&M - Established | Office | 45 | 42 | $114.44 | $5,150 |
| 99203 Office E&M - New | Office | 22 | 22 | $63.47 | $1,396 |
| 20610 Joint Injection | Office | 14 | 12 | $55.84 | $782 |
By year: 2022 $259K for 12,394 services; 2023 $275K for 12,498 services; 2024 $388K for 24,173 services.
Medicare prescription drug claims, 2024
In 2024, the drug Mark P Diehl prescribed most often to Medicare patients was Prednisone, with 991 prescriptions and refills. In total Mark P Diehl wrote 4,570 Medicare prescriptions that cost $5.8M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Prednisone Generic | 991 | 1,636 | 300 | $6,802 |
| Hydroxychloroquine Sulfate Generic | 644 | 1,468 | 162 | $37K |
| Methotrexate Methotrexate Sodium | 642 | 1,437 | 167 | $18K |
| Sulfasalazine Generic | 379 | 777 | 96 | $12K |
| Leflunomide Generic | 279 | 601 | 72 | $21K |
| Allopurinol Generic | 211 | 503 | 44 | $1,479 |
| Enbrel Sureclick Etanercept | 158 | 167 | 18 | $1.2M |
| Alendronate Sodium Generic | 124 | 290 | 31 | $1,061 |
| Otezla Apremilast | 91 | 101 | 16 | $487K |
| Humira(Cf) Pen Adalimumab | 84 | 102 | 13 | $749K |
| Methylprednisolone Generic | 80 | 121 | 32 | $2,339 |
| Insulin Syringe Syringe And Needle,insulin,1ml | 54 | 125 | 22 | $242 |
| Mycophenolate Mofetil Generic | 53 | 87 | Under 11 | $7,186 |
| Cosentyx Sensoready (2 Pens) Secukinumab | 46 | 62 | Under 11 | $505K |
| Celecoxib Generic | 37 | 53 | 11 | $902 |
Brand drugs: 1,186 claims; generic drugs: 3,307 claims; opioid claims: 17.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Mark P Diehl $12K ($12K in general payments such as food, travel and fees) from 3 companies. The largest payer was Amgen Inc. with $12K.
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.