DR. MARK M CASILLAS M.D.
NPI 1598709305
Orthopaedic Surgery - Foot and Ankle Surgery in San Antonio, TX

Active since June 15, 2006PECOS EnrolledAccepts Medicare Assignment
100/100
CMS Quality Rating
1139 E SONTERRA BLVD STE 205, SAN ANTONIO, TX 78258(210) 874-3359 Get Directions Write a Review

NPPES record last updated: February 10, 2022. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Feb 10, 2022, Dec 13, 2019, Nov 19, 2019 and 1 more (4 updates tracked since 2019).

About Dr. Mark M Casillas M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARK M CASILLAS M.D. (NPI 1598709305) is an individual foot and ankle surgery provider in San Antonio, Texas, licensed in Texas (J1917) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Peterson Regional Medical Center, and is a graduate of University Of Texas Medical School At San Antonio (1991).

NPPES Registry Identity

NPI1598709305
Entity TypeIndividualMale
Primary Taxonomy207XX0004X
Provider Legal NameDR. MARK M CASILLASCredential: M.D.
Location Address1139 E SONTERRA BLVD STE 205San Antonio, TX 78258-4349
Mailing Address1139 E Sonterra Blvd Ste 205San Antonio, TX 78258-4349 · (210) 874-3359 · Fax (210) 874-3369
Sole ProprietorNo
Medical School CMSUniversity Of Texas Medical School At San AntonioGraduated 1991
Enumeration DateJune 15, 2006
Last NPPES UpdateFebruary 10, 20224 updates tracked since enumeration
NPPES CertifiedDecember 13, 2019
NPI 1598709305 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyOrthopaedic Surgery · Foot and Ankle SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207XX0004X
License Licensed in TX · J1917
Definition
Recognized by several state medical boards as a fellowship subspecialty program of orthopaedic surgery, foot and ankle surgeons deal with adult reconstructive foot and ankle surgery, adult foot and ankle trauma, sports medicine foot and ankle, and children's foot and ankle reconstructive surgery.
Also ListedOrthopaedic SurgeryTaxonomy 207X00000X · License J1917 (TX)
1139 E SONTERRA BLVD STE 205, San Antonio, TX 78258

Other Identifiers 5

Other1676698TX · Cigna
OtherP00088532TX · Railroad Medicare
Medicaid048005502TX
Other5972563TX · Aetna
Other8K6270TX · Bcbs

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Dr. Mark M Casillas M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID446152284
PECOS Enrollment IDI20040122001026
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 14

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

X-ray of foot, minimum of 3 views 73630
An X-ray of the foot, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones and tissues in your foot. This helps to identify fractures, infections, or other abnormalities. Multiple views ensure a comprehensive examination.
338 services230 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
303 services196 patients
X-ray of ankle, minimum of 3 views 73610
An ankle X-ray is a quick, painless imaging test. It involves capturing at least three different images or 'views' of your ankle using small amounts of radiation. These images help identify any abnormalities or injuries, such as fractures or arthritis.
219 services167 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
124 services124 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
64 services51 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
58 services58 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Peterson Regional Medical Center

Acute Care Hospitals · Kerrville, TX
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450007
Location551 Hill Country DriveKerrville, TX 78028 · Kerr County
Emergency services Birthing friendly

Baptist Medical Center

Acute Care Hospitals · San Antonio, TX
4/5 CMS rating
OwnershipProprietary
CMS Certification Number450058
Location111 Dallas StreetSan Antonio, TX 78205 · Bexar County
Emergency services Birthing friendly

Methodist Hospital Stone Oak

Acute Care Hospitals · San Antonio, TX
4/5 CMS rating
OwnershipProprietary
CMS Certification Number670055
Location1139 E Sonterra Blvd,San Antonio, TX 78258 · Bexar County
Emergency services Birthing friendly

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Promoting Interoperability100
Improvement Activities40

Reported Quality Measures

Documentation of Current Medications in the Medical Record
Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.
100%2,629 patients5/55-star benchmark: 100%
Health Information Exchange
The MIPS eligible clinician that transitions or refers their patient to another setting of care or health care clinician (1) uses CEHRT to create a summary of care record; and (2) electronically transmits such summary to a receiving health care clinician for…
77%919 patients4/55-star benchmark: 88%
Medication Reconciliation
The MIPS eligible clinician performs medication reconciliation for at least one transition of care in which the patient is transitioned into the care of the MIPS eligible clinician.
100%754 patients5/55-star benchmark: 100%
Patient-Specific Education
The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.
49%1,627 patients3/55-star benchmark: 97%
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…
30%1,389 patients2/55-star benchmark: 97%
Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention
Percentage of patients aged 18 years and older who were screened for tobacco use one or more times within 24 months AND who received tobacco cessation intervention if identified as a tobacco user
Patients screenedForUse: 60% · 505 patients
Patients tobacco: 17% · 24 patients
54%505 patients3/55-star benchmark: 98%
Provide Patient Access
At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…
86%1,627 patients4/55-star benchmark: 100%
Secure Messaging
For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of CEHRT to the patient (or the patient-authorized representative), or in response to a secure…
14%1,627 patients1/55-star benchmark: 89%
View, Download, or Transmit (VDT)
At least one patient seen by the MIPS eligible clinician during the performance period (or patient-authorized representative) views, downloads or transmits their health information to a third party during the performance period.
47%1,627 patients
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 5

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Ankle foot orthosis, posterior solid ankle, plastic, custom fabricated L1960
DME-Orthotic Devices · category DF003N
3 suppliers15 claims15 services$432.19 avg. paid by Medicare
Addition to lower extremity, varus/valgus correction ('t') strap, padded/lined or malleolus pad L2270
DME-Orthotic Devices · category DF000N
1 supplier13 claims13 services$41.86 avg. paid by Medicare
Addition to lower extremity, varus/valgus correction, plastic modification, padded/lined L2275
DME-Orthotic Devices · category DF000N
3 suppliers15 claims15 services$101.87 avg. paid by Medicare
Addition to lower extremity orthosis, high strength, lightweight material, all hybrid lamination/prepreg composite, per segment, for custom fabricated orthosis only L2755
DME-Orthotic Devices · category DF000N
2 suppliers14 claims25 services$109.56 avg. paid by Medicare
Addition to lower extremity orthosis, soft interface for molded plastic, below knee section L2820
DME-Orthotic Devices · category DF000N
2 suppliers15 claims15 services$67.81 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Family Medicine (Sports Medicine)
1139 E SONTERRA BLVD STE 205
SAN ANTONIO, TX 78258
Obstetrics & Gynecology
1139 E SONTERRA BLVD STE 205
SAN ANTONIO, TX 78258
Nurse Practitioner (Family)
1139 E SONTERRA BLVD STE 205
SAN ANTONIO, TX 78258
Physician Assistant
1139 E SONTERRA BLVD STE 205
SAN ANTONIO, TX 78258
Obstetrics & Gynecology
1139 E SONTERRA BLVD STE 205
SAN ANTONIO, TX 78258
Obstetrics & Gynecology
1139 E SONTERRA BLVD STE 205
SAN ANTONIO, TX 78258

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark Casillas's NPI number?

The NPI number for Mark Casillas is 1598709305. It was assigned to this individual provider in the NPPES registry on June 15, 2006.

Where is Mark Casillas located?

Mark Casillas practices at 1139 E Sonterra Blvd Ste 205, San Antonio, TX 78258. The listed phone number is (210) 874-3359.

What is Mark Casillas's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Foot and Ankle Surgery, with taxonomy code 207XX0004X.

Is Mark Casillas enrolled in Medicare?

Yes. Mark Casillas is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Mark Casillas accept?

Health plans from Ambetter Health, Ambetter from Superior HealthPlan, Blue Cross and Blue Shield of Texas, Molina Healthcare and Oscar Insurance Company list Mark Casillas as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Mark Casillas affiliated with any hospitals?

According to CMS data, Mark Casillas is affiliated with Peterson Regional Medical Center, Baptist Medical Center and Methodist Hospital Stone Oak.

When was this NPI record last updated?

The NPPES record for Mark Casillas was last updated on February 10, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.