Specialty Directory
Internal Medicine in Sonoma, CA
Federal CMS data for 7 internal medicine providers practicing in Sonoma, CA. Includes Medicare utilization, Open Payments industry funding, and PECOS enrollment status.
7
Providers
Median industry payments
$1,042
7
Internal Medicine Providers
in Sonoma, CA
$1,042
Median Industry Payments
per provider (2018–2024)
1,821
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 — they are legal and do not indicate wrongdoing.
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 |
|---|---|---|---|---|---|---|
| SEBASTIAN, BRIAN MD | 2,862 | 2,008 | Office visit, established patient (30-39 min) | $210 (2020-2024) | Food & Beverage (100%) | Very High |
| LIU, YONG M.D. | 2,166 | 1,487 | Office visit, established patient (20-29 min) | $5,293 (2018-2024) | Food & Beverage (100%) | Very High |
| VERDUCCI, DENNIS MD | 1,974 | 857 | Office visit, established patient (30-39 min) | $932 (2018-2024) | Food & Beverage (100%) | Very High |
| TOBIN, KENNETH DO | 1,821 | 1,734 | Echocardiogram, transthoracic | $3,049 (2018-2023) | Travel (67%) | Very High |
| CAMPBELL, S MD | 1,702 | 873 | Office visit, established patient (30-39 min) | $629 (2018-2024) | Food & Beverage (100%) | Very High |
| DELOREFICE, GUY M.D. | 1,507 | 939 | Office visit, established patient (30-39 min) | $1,042 (2018-2023) | Food & Beverage (100%) | Very High |
| SEPULVEDA-ACOSTA, RAFAEL MD | 822 | 497 | Office visit, established patient, complex (40-54 min) | $2,024 (2018-2024) | Food & Beverage (99%) | Very 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 (6)
| Provider | Medicare Volume | Industry Payments |
|---|---|---|
| SEBASTIAN, BRIAN | 2,862 | $210 |
| LIU, YONG | 2,166 | $5,293 |
| VERDUCCI, DENNIS | 1,974 | $932 |
| CAMPBELL, S | 1,702 | $629 |
| DELOREFICE, GUY | 1,507 | $1,042 |
| SEPULVEDA-ACOSTA, RAFAEL | 822 | $2,024 |
Cardiac & Cardiac (1)
| Provider | Medicare Volume | Industry Payments |
|---|---|---|
| TOBIN, KENNETH | 1,821 | $3,049 |