Doctor profile · Federal record
Dr. Mark Casillas, M.D.
Orthopaedic Foot and Ankle Surgery Physician (CMS: Orthopedic Surgery) · Orthopaedic Surgery Physician · San Antonio, TX
- NPI 1598709305
- Accepts Medicare
- MIPS 100.0 / 100 · 2023
- 35 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1139 E Sonterra Blvd Ste 205
San Antonio, TX 782584349
(210) 874-3359
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- February 10, 2022
- Year of graduation
- 1991 — 35 yrs since
- Specialty taxonomy
- 207XX0004X — NUCC code
- State license (1)
- Texas #J1917
- Medicaid
- TX #048005502
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1598709305. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
927
Distinct HCPCS
10
Medicare allowed
$83,661
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
73630 |
X-ray of foot, minimum of 3 views | 273 | 187 | $33 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 184 | 135 | $86 | |
73610 |
X-ray of ankle, minimum of 3 views | 148 | 112 | $36 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 80 | 65 | $53 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 66 | 66 | $108 | |
99202 |
New patient office or other outpatient visit, 15-29 minutes | 48 | 48 | $70 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 47 | 47 | $161 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 26 | 26 | $124 | |
27702 |
Reconstruction of ankle joint with prosthesis | 16 | 16 | $831 | |
20680 |
Removal of deep implant from bone | 14 | 11 | $217 |
In context: peer comparison
Among 4 peers in this city , average services per provider: 112. This provider delivers 8.3× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
38
Patients
31
Total drug cost
$327
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 38 | 31 | $327 |
Hospital affiliations
Frequently asked questions
What is Dr. Mark Casillas's medical specialty?
Dr. Mark Casillas practices Orthopaedic Foot and Ankle Surgery Physician in San Antonio, TX.
Where does Dr. Mark Casillas practice?
Dr. Mark Casillas practices at 1139 E Sonterra Blvd Ste 205, San Antonio, TX 782584349. Office phone: 2108743359.
What is Dr. Mark Casillas's NPI?
Dr. Mark Casillas's National Provider Identifier (NPI) is 1598709305, issued by NPPES.
Does Dr. Mark Casillas accept Medicare assignment?
Yes. Dr. Mark Casillas accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Casillas commonly perform?
Top Medicare-reported procedures in 2023: X-ray of foot, minimum of 3 views (HCPCS 73630); Established patient office or other outpatient visit (HCPCS 99213); X-ray of ankle, minimum of 3 views (HCPCS 73610). Source: CMS Medicare Physician & Other Practitioners file.