1. Home
  2. Directory
  3. Texas
  4. San Antonio
  5. Nurse Practitioner
  6. NPI Profile

MARK ANTHONY CASTILLO
NPI 1760368435
Nurse Practitioner - Gerontology in San Antonio, TX

Active since August 15, 2025PECOS EnrolledAccepts Medicare Assignment
3422 MAGUEY TRL, SAN ANTONIO, TX 78245(210) 885-2985 Get Directions Write a Review

NPPES record last updated: September 15, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 15, 2025, Aug 15, 2025 (2 updates tracked since 2025).

About Mark Anthony Castillo NPPES

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

MARK ANTHONY CASTILLO (NPI 1760368435) is an individual gerontology provider in San Antonio, Texas, licensed in Texas (1209358) and active in the NPI registry since August 2025. He is enrolled in Medicare PECOS, is affiliated with University Health System, and maintains a secondary practice location in San Antonio.

NPPES Registry Identity

NPI1760368435
Entity TypeIndividualMale
Primary Taxonomy363LG0600X
Provider Legal NameMARK ANTHONY CASTILLO
Location Address3422 MAGUEY TRLSan Antonio, TX 78245-2437
Mailing Address3422 Maguey TrlSan Antonio, TX 78245-2437 · (210) 885-2985
Phone(210) 885-2985
Sole ProprietorYes
Medical School CMSOtherGraduated 2025
Enumeration DateAugust 15, 2025
Last NPPES UpdateSeptember 15, 20252 updates tracked since enumeration
NPPES CertifiedSeptember 15, 2025
✔ NPI 1760368435 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · GerontologyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LG0600X
License✔ Licensed in TX · 1209358
3422 MAGUEY TRL, San Antonio, TX 78245
Open in Google Maps ↗

Secondary Practice Location 1

Location 14502 Medical DrSan Antonio, TX 78229-4492 · Phone (210) 358-4000

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, Community First, Imperial Insurance Companies, Inc. and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mark Anthony Castillo 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 ID3274038310
PECOS Enrollment IDI20250927000597
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.

Medicare Billing Reassignments

2

Medicare enrollment records show Mark Castillo reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Community Medicine Associates
13 mi
Family Medicine
903 W MARTIN ST # MS 49-2
San Antonio, TX 78207
  • Reassigned Medicare billing, Texas enrollment
  • 1,129 clinicians in this Medicare group
NPI 1245313329 (210) 358-3401
Jlyb, LLC
20 mi
Physician Assistant
21222 GATHERING OAK STE 101
San Antonio, TX 78260
  • Reassigned Medicare billing, Texas enrollment
  • 5 clinicians in this Medicare group
NPI 1033685029 (210) 993-2473

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare

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

University Health System

Acute Care Hospitals · San Antonio, TX
3/5 CMS rating
OwnershipGovernment - Hospital District or Authority
CMS Certification Number450213
Location4502 Medical DrSan Antonio, TX 78229 · Bexar County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78245 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$84.92 typical visit price
range $54.84 – $166.88
Typical copayment $21.23 (range $13.71 – $41.72)
Most-billed visit code 99203
Established Patient
$97.05 typical visit price
range $17.52 – $136.11
Typical copayment $24.26 (range $4.38 – $34.02)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Castillo's NPI number?

The NPI number for Mark Castillo is 1760368435. It was assigned to this individual provider in the NPPES registry on August 15, 2025.

Where is Mark Castillo located?

Mark Castillo practices at 3422 Maguey Trl, San Antonio, TX 78245. The listed phone number is (210) 885-2985.

What is Mark Castillo's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Gerontology, with taxonomy code 363LG0600X.

Is Mark Castillo enrolled in Medicare?

Yes. Mark Castillo 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.

Which organizations bill Medicare for Mark Castillo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Castillo reassigns Medicare benefits to 2 organizations: Community Medicine Associates (San Antonio, TX) and Jlyb, LLC (San Antonio, TX). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mark Castillo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mark Castillo accept?

Health plans from Blue Cross and Blue Shield of Texas, Community First, Imperial Insurance Companies, Inc., UnitedHealthcare and WellPoint list Mark Castillo 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 Castillo affiliated with any hospitals?

According to CMS data, Mark Castillo is affiliated with University Health System.

When was this NPI record last updated?

The NPPES record for Mark Castillo was last updated on September 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months 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.