DR. MARK M CASILLAS (M.D.) – Orthopaedic Foot and Ankle Surgery Physician, NPI 1598709305
Orthopaedic Foot and Ankle Surgery Physician
Main info
Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
2,187 ORTHOPEDIC SURGERY in TX
Provider Addresses for DR. MARK M CASILLAS (M.D.)
1139 E SONTERRA BLVD STE 205
SAN ANTONIO, TX 782584349
Phone: (210) 874-3359
Fax: (210) 874-3369
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $36.
Total Amount is formed as General ($36) + Research ($0) + Ownership ($0) = $36.
Last reported payment date: 2023-11-28 • Largest payer in this snapshot: Sanara MedTech Inc. ($18).
Total Amount
$36
General + Research + Ownership
Payments
2
Total payment records
General Amount
$36
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-11-28
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Sanara MedTech Inc. | $18 |
| Medtronic, Inc. | $18 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2004-01-22
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20040122001026 | I | Orthopedic Surgery | TX | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 73630 | X-ray of foot, minimum of 3 views | 273 | 187 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 184 | 135 | $0 |
| 73610 | X-ray of ankle, minimum of 3 views | 148 | 112 | $0 |
| 99212 | Established patient office or other outpatient visit, 10-19 minutes | 80 | 65 | $0 |
| 99203 | New patient office or other outpatient visit, 30-44 minutes | 66 | 66 | $0 |
Insurance plans in this area (ZIP 78258)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| ORTHOPEDIC SURGERY | TX | 73630 | X-ray of foot, minimum of 3 views | 272 | 177 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| P O D I A T R Y | TX | |
| Certified Clinical Nurse Specialist (Cns) | TX | |
| - | TX | |
| General Surgery | TX | |
| Pediatric Medicine, Cardiovascular Disease (Cardiology) | TX | |
| Medical Oncology, Hematology, Internal Medicine | TX | |
| Internal Medicine | TX | |
| Nurse Practitioner | TX | |
| Urology, General Surgery, Urology | TX | |
| General Surgery | TX |
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