Internal Medicine, Infectious Disease · Southampton, PA
NPI
1003880071
Since 2006
Specialty
Internal Medicine, Infectious Disease
Code 207RI0200X
Group practices
1
Medicare group memberships
Hospitals
5
Hospital affiliations
729 Grove Ave Unit 4
Southampton, PA, 18966
Phone (215) 355-9634
Groups this clinician bills Medicare through
Medicare paid, 2024
$187K
3,081 services
Medicare patients, 2024
1,021
Average age 75
Drug cost, 2024
$1.8M
1,017 prescriptions
Company payments, 2025
$480
From 7 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Donald K Marcus was code 99232 (hospital e&m - subsequent), 772 times for 541 patients. In total Donald K Marcus billed 3,081 services in 23 codes, and Medicare paid $187K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2021-05-18.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99232 Hospital E&M - Subsequent | Facility | 772 | 541 | $67.81 | $52K |
| 99233 Hospital E&M - Subsequent | Facility | 329 | 266 | $101.16 | $33K |
| 99222 Hospital E&M - Initial | Facility | 326 | 312 | $113.44 | $37K |
| 99223 Hospital E&M - Initial | Facility | 167 | 164 | $148.96 | $25K |
| 99214 Office E&M - Established | Office | 94 | 78 | $106.66 | $10K |
| 99231 Hospital E&M - Subsequent | Facility | 89 | 81 | $43.08 | $3,834 |
| 99215 Office E&M - Established | Office | 22 | 18 | $159.02 | $3,498 |
| 36415 Venipuncture Blood Collection | Office | 15 | 13 | $8.65 | $130 |
| 99205 Office E&M - New | Office | 13 | 13 | $193.77 | $2,519 |
| 99204 Office E&M - New | Office | 13 | 13 | $136.20 | $1,771 |
By year: 2022 $198K for 5,410 services; 2023 $192K for 4,265 services; 2024 $187K for 3,081 services.
Lab tests billed to Medicare, 2024
| Test code | Tests | Patients | Paid per test | Medicare paid |
|---|---|---|---|---|
| 36415 Venipuncture Blood Collection | 15 | 13 | $8.65 | $130 |
Medicare prescription drug claims, 2024
In 2024, the drug Donald K Marcus prescribed most often to Medicare patients was Biktarvy (Bictegrav/Emtricit/Tenofov Ala), with 95 prescriptions and refills. In total Donald K Marcus wrote 1,017 Medicare prescriptions that cost $1.8M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Biktarvy Bictegrav/Emtricit/Tenofov Ala | 95 | 95 | 17 | $367K |
| Triumeq Abacavir/Dolutegravir/Lamivudi | 52 | 54 | Under 11 | $204K |
| Cephalexin Generic | 51 | 69 | 18 | $455 |
| Ceftriaxone Ceftriaxone Sodium | 43 | 43 | Under 11 | $3,169 |
| Genvoya Elviteg/Cob/Emtri/Tenof Alafen | 42 | 50 | Under 11 | $197K |
| Tivicay Dolutegravir Sodium | 36 | 38 | Under 11 | $118K |
| Amoxicillin Generic | 34 | 54 | 13 | $426 |
| Vancomycin Hcl Generic | 33 | 34 | 21 | $4,343 |
| Juluca Dolutegravir/Rilpivirine | 33 | 33 | Under 11 | $125K |
| Dovato Dolutegravir Sodium/Lamivudine | 26 | 26 | Under 11 | $82K |
| Darunavir Generic | 20 | 24 | Under 11 | $28K |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 20 | 33 | 11 | $200 |
| Lamivudine Generic | 20 | 21 | Under 11 | $1,068 |
| Symtuza Darunavir/Cob/Emtri/Tenof Alaf | 19 | 19 | Under 11 | $92K |
| Venlafaxine Hcl Er Venlafaxine Hcl | 18 | 54 | Under 11 | $268 |
Brand drugs: 443 claims; generic drugs: 574 claims.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Donald K Marcus $480 ($480 in general payments such as food, travel and fees) from 7 companies. The largest payer was Abbvie Inc. with $212.
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.