MARK CASILLAS, M.D.
Surgery Physician · KNOXVILLE, TN
Individual Active NPI 1245458082
Medicare payment data Part B · 2024
| Year | Beneficiaries | Services | Submitted | Allowed | Paid |
|---|---|---|---|---|---|
| 2024 | 166 | 440 | $272,840 | $88,025 | $69,072 |
| 2023 | 160 | 443 | $297,735 | $94,489 | $74,502 |
| 2022 | 185 | 530 | $356,970 | $122,518 | $96,783 |
Top procedures (2024)
| HCPCS | Description | Services | Avg allowed | Avg paid |
|---|---|---|---|---|
| 46600 | Diagnostic exam of anus using an endoscope | 55 | $108 | $81 |
| 99213 | Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | 45 | $83 | $57 |
| 45384 | Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery | 36 | $132 | $99 |
| 99203 | New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | 36 | $106 | $80 |
| 45300 | Diagnostic exam of rectum and lower large bowel using an endoscope | 21 | $115 | $88 |
| 99204 | New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | 21 | $159 | $123 |
| 99205 | New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | 20 | $202 | $163 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 14 | $187 | $143 |
| 99214 | Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | 12 | $122 | $90 |
| 15860 | Injection of agent into vein to assess blood flow of skin graft or flap | 11 | $49 | $40 |
Taxonomy & licensure
| Specialty | Code | Primary | License | State |
|---|---|---|---|---|
| Surgery Physician | 208600000X | ✓ | LP00968 | RI |
| Colon & Rectal Surgery Physician | 208C00000X | 48676 | TN |
Medicare participation
Enrolled in Medicare
CMS lists this provider as eligible to order and refer under Medicare. They billed Medicare Part B in 2024.
Enrolment status from public CMS files — not a guarantee of coverage for any particular patient or plan. We hold no commercial-insurance network data; confirm with the provider and your insurer before an appointment.
- Part B
- Yes
- DME
- Yes
- Home health
- Yes
- Power mobility
- Yes
- Hospice
- Yes
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Source: NPPES (public domain) and CMS Medicare Physician & Other Practitioners data. Not affiliated with CMS, NPPES, or any government agency.