Internal Medicine, Medical Oncology · Ann Arbor, MI
NPI
1316023278
Since 2006
Specialty
Internal Medicine, Medical Oncology
Code 207RX0202X
Group practices
1
Medicare group memberships
Hospitals
1
Hospital affiliations
1500 E Medical Center Dr
Ann Arbor, MI, 48109
Phone (734) 936-4000
Groups this clinician bills Medicare through
Medicare paid, 2024
$23K
354 services
Medicare patients, 2024
116
Average age 72
Drug cost, 2024
$1.5M
398 prescriptions
Company payments, 2025
$0
From 1 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Gregory P Kalemkerian was code 99214 (office e&m - established), 122 times for 62 patients. In total Gregory P Kalemkerian billed 354 services in 11 codes, and Medicare paid $23K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2020-03-05.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99214 Office E&M - Established | Facility | 122 | 62 | $72.05 | $8,790 |
| 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 | Facility | 97 | 49 | $12.96 | $1,257 |
| 99215 Office E&M - Established | Facility | 70 | 42 | $107.00 | $7,490 |
| 99205 Office E&M - New | Facility | 22 | 22 | $126.68 | $2,787 |
| 99213 Office E&M - Established | Facility | 15 | 13 | $52.26 | $784 |
By year: 2022 $36K for 364 services; 2023 $32K for 353 services; 2024 $23K for 354 services.
Medicare prescription drug claims, 2024
In 2024, the drug Gregory P Kalemkerian prescribed most often to Medicare patients was Tagrisso (Osimertinib Mesylate), with 68 prescriptions and refills. In total Gregory P Kalemkerian wrote 398 Medicare prescriptions that cost $1.5M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Tagrisso Osimertinib Mesylate | 68 | 68 | Under 11 | $944K |
| Ondansetron Hcl Generic | 43 | 43 | 20 | $334 |
| Prednisone Generic | 31 | 32 | 18 | $101 |
| Eliquis Apixaban | 26 | 50 | Under 11 | $28K |
| Dexamethasone Generic | 16 | 19 | 12 | $421 |
| Omeprazole Generic | 15 | 31 | Under 11 | $144 |
| Prochlorperazine Maleate Generic | 14 | 14 | Under 11 | $390 |
| Levothyroxine Sodium Generic | 11 | 33 | Under 11 | $165 |
| Gavreto Pralsetinib | 11 | 11 | Under 11 | $186K |
Brand drugs: 152 claims; generic drugs: 246 claims; opioid claims: 23.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Gregory P Kalemkerian $0 (- in general payments such as food, travel and fees) from 1 company.
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.