Internal Medicine, Hematology & Oncology · Denver, CO
NPI
1134103476
Since 2005
Specialty
Internal Medicine, Hematology & Oncology
Code 207RH0003X
Group practices
2
Medicare group memberships
Hospitals
2
Hospital affiliations
1800 N Williams St Ste 200
Denver, CO, 80218
Phone (303) 388-4876
Groups this clinician bills Medicare through
Medicare paid, 2024
$3.4M
115,315 services
Medicare patients, 2024
808
Average age 74
Drug cost, 2024
$3.0M
999 prescriptions
Company payments, 2025
$6,586
From 11 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Robert M Rifkin was code J9271 (injection, pembrolizumab, 1 mg), 17,400 times for 15 patients. In total Robert M Rifkin billed 115,315 services in 176 codes, and Medicare paid $3.4M.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2025-02-04.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| J9271 Injection, pembrolizumab, 1 mg | Office | 17,400 | 15 | $44.63 | $777K |
| J1930 Injection, lanreotide, 1 mg | Office | 10,170 | 19 | $38.55 | $392K |
| J1453 Injection, fosaprepitant, 1 mg | Office | 4,200 | 15 | $0.11 | $464 |
| J0185 Injection, aprepitant, 1 mg | Office | 3,510 | 13 | $1.34 | $4,695 |
| Q9967 Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml | Office | 2,955 | 30 | $0.10 | $300 |
| J1568 Injection, immune globulin, (octagam), intravenous, non-lyophilized (e.g., liquid), 500 mg | Office | 2,260 | 14 | $35.73 | $81K |
| J1100 Injection, dexamethasone sodium phosphate, 1 mg | Office | 1,590 | 45 | $0.09 | $140 |
| J0897 Injection, denosumab, 1 mg | Office | 1,260 | 11 | $20.39 | $26K |
| 80053 Clinical Chemistry | Office | 1,053 | 303 | $10.27 | $11K |
| 36415 Venipuncture Blood Collection | Office | 1,051 | 415 | $8.65 | $9,091 |
| 99214 Office E&M - Established | Office | 1,021 | 369 | $90.32 | $92K |
| 85025 Blood Count | Office | 958 | 277 | $7.56 | $7,243 |
| 83615 Clinical Chemistry | Office | 940 | 275 | $5.87 | $5,521 |
| 85046 Blood Count | Office | 909 | 270 | $5.42 | $4,928 |
| 82784 Immunoassay | Office | 853 | 105 | $9.11 | $7,773 |
By year: 2022 $4.0M for 164,284 services; 2023 $4.5M for 186,629 services; 2024 $3.4M for 115,315 services.
Lab tests billed to Medicare, 2024
| Test code | Tests | Patients | Paid per test | Medicare paid |
|---|---|---|---|---|
| 80053 Clinical Chemistry | 1,053 | 303 | $10.27 | $11K |
| 36415 Venipuncture Blood Collection | 1,051 | 415 | $8.65 | $9,091 |
| 85025 Blood Count | 958 | 277 | $7.56 | $7,243 |
| 83615 Clinical Chemistry | 940 | 275 | $5.87 | $5,521 |
| 85046 Blood Count | 909 | 270 | $5.42 | $4,928 |
| 82784 Immunoassay | 853 | 105 | $9.11 | $7,773 |
| 83521 Immunoassay | 497 | 76 | $16.82 | $8,360 |
| 84165 Clinical Chemistry | 259 | 77 | $10.47 | $2,713 |
| 86334 Immunoassay | 252 | 76 | $21.79 | $5,492 |
| 82232 Clinical Chemistry | 236 | 73 | $15.82 | $3,733 |
Medicare prescription drug claims, 2024
In 2024, the drug Robert M Rifkin prescribed most often to Medicare patients was Acyclovir, with 103 prescriptions and refills. In total Robert M Rifkin wrote 999 Medicare prescriptions that cost $3.0M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Acyclovir Generic | 103 | 180 | 25 | $1,644 |
| Warfarin Sodium Generic | 65 | 188 | 21 | $949 |
| Eliquis Apixaban | 63 | 109 | 14 | $64K |
| Xarelto Rivaroxaban | 60 | 96 | Under 11 | $51K |
| Lenalidomide Generic | 53 | 53 | Under 11 | $680K |
| Potassium Chloride Generic | 43 | 67 | Under 11 | $736 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 34 | 51 | Under 11 | $270 |
| Anastrozole Generic | 32 | 92 | Under 11 | $627 |
| Allopurinol Generic | 23 | 56 | Under 11 | $434 |
| Prednisone Generic | 23 | 30 | Under 11 | $104 |
| Hydroxyurea Generic | 21 | 40 | Under 11 | $505 |
| Imbruvica Ibrutinib | 20 | 20 | Under 11 | $289K |
| Gabapentin Generic | 20 | 44 | Under 11 | $2,694 |
| Methylprednisolone Generic | 18 | 21 | Under 11 | $296 |
| Valacyclovir Valacyclovir Hcl | 17 | 31 | Under 11 | $935 |
Brand drugs: 250 claims; generic drugs: 749 claims; opioid claims: 16.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Robert M Rifkin $6,586 ($6,586 in general payments such as food, travel and fees) from 11 companies. The largest payer was Regeneron Healthcare Solutions, Inc. with $2,493.
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.