Specialty Directory
Internal Medicine in Waltham, MA
Federal CMS data for 18 internal medicine providers practicing in Waltham, MA. Includes Medicare utilization, Open Payments industry funding, and PECOS enrollment status.
18
Providers
Median industry payments
$150
18
Internal Medicine Providers
in Waltham, MA
$150
Median Industry Payments
per provider (2018–2024)
622
Median Medicare Services
fee-for-service claims
How to read this directory: Providers are listed by Medicare service volume, which reflects only
Medicare fee-for-service patients (typically 65+). This does not represent total practice volume.
Industry payments span multiple years and payment types; disclosure alone establishes neither wrongdoing nor legality.
Internal Medicine includes multiple subspecialties with different practice patterns.
Learn more →
Internal Medicine Providers
NPPES · Open Payments · Medicare| Provider | Medicare Volume | Beneficiaries* | Top Procedure | Industry Payments | Payment Type | Coverage |
|---|---|---|---|---|---|---|
| GAO, CHUANYUN MD | 2,309 | — | Denosumab injection (Prolia/Xgeva) | $1,956 (2018-2024) | — | Very High |
| KHOORY, WISSAM M.D. | 1,866 | — | Office visit, established patient (30-39 min) | $0 | — | High |
| GAPOSCHKIN, DANIEL M.D/PH.D. | 1,246 | — | Office visit, established patient (30-39 min) | $0 | — | High |
| GELEV, CHRISTINA MD | 1,021 | — | Blood draw (venipuncture) | $50 (2021-2024) | — | Very High |
| BALASUBRAMANIAM, DEVASENA M.D. | 1,020 | — | Office visit, established patient, complex (40-54 min) | $0 | — | High |
| SCHAINFELD, ROBERT DO | 922 | — | Office visit, established patient (30-39 min) | $1,740 (2018-2024) | — | Very High |
| MEROLA, HENRY M.D. | 755 | — | Office visit, established patient (20-29 min) | $1,294 (2018-2024) | — | Very High |
| FRY, THOMAS MD | 711 | — | Office visit, established patient (30-39 min) | $0 | — | High |
| VENSEL, LESLIE MD | 623 | — | Office visit, established patient (30-39 min) | $0 | — | High |
| TIRMIZI, HADIA M.D. | 620 | — | Office visit, established patient (30-39 min) | $1,601 (2018-2020) | — | Very High |
| ZACARIAN, ALICE M.D. | 511 | — | Office visit, established patient (30-39 min) | $249 (2018-2022) | — | Very High |
| MCDONOUGH, ALLISON MD | 433 | — | Office visit, established patient (30-39 min) | $0 | — | High |
| STECKER, ELISSA M.D, | 355 | — | Office visit, established patient (30-39 min) | $1,559 (2018-2024) | — | Very High |
| EHRLICH, BARRY M.D. | 253 | — | Office visit, established patient (20-29 min) | $0 | — | High |
| DREWS, MARK MD | 107 | — | Hemoglobin A1c test (diabetes monitoring) | $395 (2021-2024) | — | Very High |
| PFEFFER, JULIE MD | 57 | — | Office visit, established patient (30-39 min) | $13 (2022-2022) | — | Very High |
| KANNER, STEVEN MD | 43 | — | Office visit, established patient (30-39 min) | $3,763 (2018-2019) | — | Very High |
| BUSICK, EDWARD M.D. | — | — | — | $5,400 (2018-2021) | — | High |
Note: Internal Medicine encompasses multiple subspecialties with different practice patterns.
Differences in payment amounts and procedure volumes may reflect subspecialty focus
rather than practice quality. Consider viewing individual profiles for full context.
By Practice Pattern
Internal Medicine encompasses multiple practice patterns. Comparing providers within the same pattern provides more meaningful context.
Clinical Cardiology (16)
| Provider | Medicare Volume | Industry Payments |
|---|---|---|
| GAO, CHUANYUN | 2,309 | $1,956 |
| KHOORY, WISSAM | 1,866 | $0 |
| GAPOSCHKIN, DANIEL | 1,246 | $0 |
| GELEV, CHRISTINA | 1,021 | $50 |
| BALASUBRAMANIAM, DEVASENA | 1,020 | $0 |
| SCHAINFELD, ROBERT | 922 | $1,740 |
| MEROLA, HENRY | 755 | $1,294 |
| FRY, THOMAS | 711 | $0 |
| VENSEL, LESLIE | 623 | $0 |
| TIRMIZI, HADIA | 620 | $1,601 |
Remote Monitoring (1)
| Provider | Medicare Volume | Industry Payments |
|---|---|---|
| DREWS, MARK | 107 | $395 |
General Practice (1)
| Provider | Medicare Volume | Industry Payments |
|---|---|---|
| BUSICK, EDWARD | 0 | $5,400 |