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JAVIER CASTILLO M.D.
NPI 1427386804
Obstetrics & Gynecology - Maternal & Fetal Medicine in San Antonio, TX

Active since November 24, 2009PECOS EnrolledAccepts Medicare Assignment
5414 FREDERICKSBURG RD, SAN ANTONIO, TX 78229(210) 614-2209(210) 614-5714 Get Directions Write a Review

NPPES record last updated: July 20, 2015. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Javier Castillo M.d. NPPES

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

JAVIER CASTILLO M.D. (NPI 1427386804) is an individual maternal & fetal medicine provider in San Antonio, Texas, licensed in Texas (N6209) and active in the NPI registry since November 2009. He is enrolled in Medicare PECOS and is a graduate of University Of Texas Medical School At San Antonio (2008).

NPPES Registry Identity

NPI1427386804
Entity TypeIndividualMale
Primary Taxonomy207VM0101X
Provider Legal NameJAVIER CASTILLOCredential: M.D.
Location Address5414 FREDERICKSBURG RDSan Antonio, TX 78229
Mailing Address5414 Fredericksburg RdSan Antonio, TX 78229 · (210) 614-2209 · Fax (210) 614-5714
Phone(210) 614-2209
Fax(210) 614-5714
Sole ProprietorNo
Medical School CMSUniversity Of Texas Medical School At San AntonioGraduated 2008
Enumeration DateNovember 24, 2009
Last NPPES UpdateJuly 20, 2015
✔ NPI 1427386804 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & Gynecology · Maternal & Fetal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207VM0101X
License✔ Licensed in TX · N6209
Definition
An obstetrician/gynecologist who cares for, or provides consultation on, patients with complications of pregnancy. This specialist has advanced knowledge of the obstetrical, medical and surgical complications of pregnancy and their effect on both the mother and the fetus. The specialist also possesses expertise in the most current diagnostic and treatment modalities used in the care of patients with complicated pregnancies.
Also ListedObstetrics & GynecologyTaxonomy 207V00000X · License BP10031004 (TX), 22022 (MS)
5414 FREDERICKSBURG RD, San Antonio, TX 78229
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Other Identifiers 2

Medicaid08503514MS
Medicare PIN372148YS8TMS

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections 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

Javier Castillo 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 ID1254552540
PECOS Enrollment IDI20150515001872
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 Javier Castillo reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Magella Medical Associates Billing, Inc.
86 mi
Neonatal-Perinatal Medicine
2400 ROUND ROCK AVE
Round Rock, TX 78681
  • Reassigned Medicare billing, Texas enrollment
  • 432 clinicians in this Medicare group
NPI 1083631071 (512) 341-1000
Children's Physician Services Of South Texas
141 mi
Plastic Surgery
3533 S ALAMEDA ST
Corpus Christi, TX 78411
  • Reassigned Medicare billing, Texas enrollment
  • 510 clinicians in this Medicare group
NPI 1568658227 (361) 694-4444

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78229 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
$126.40 typical visit price
range $54.84 – $166.88
Typical copayment $31.60 (range $13.71 – $41.72)
Most-billed visit code 99204
Established Patient
$68.55 typical visit price
range $17.52 – $136.11
Typical copayment $17.13 (range $4.38 – $34.02)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

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

ANN MARIE WINN NNP
Nurse Practitioner (Neonatal, Critical Care)
5414 FREDERICKSBURG RD, SUITE 100
SAN ANTONIO, TX 78229
Bexar County (210) 541-8281
PATRICIA A WENDORF NNP
Nurse Practitioner (Neonatal, Critical Care)
5414 FREDERICKSBURG RD, SUITE 100
SAN ANTONIO, TX 78229
Bexar County (210) 541-8281
DR. BLANCA CANTU MOLINA MD
Pediatrics (Neonatal-Perinatal Medicine)
5414 FREDERICKSBURG RD, SUITE 100
SAN ANTONIO, TX 78229
Bexar County (210) 541-8281
VIRGINIA MAZELIN NNP
Nurse Practitioner (Neonatal, Critical Care)
5414 FREDERICKSBURG RD, SUITE 100
SAN ANTONIO, TX 78229
Bexar County (210) 541-8281
DR. KELLY MEYERING PSYD
Psychologist
5414 FREDERICKSBURG RD, SUITE 250
SAN ANTONIO, TX 78229
Bexar County (210) 541-8281
MRS. MOFESOLA OLAOLUWA ADEOLA
Social Worker (Clinical)
5414 FREDERICKSBURG RD
SAN ANTONIO, TX 78229
Bexar County (726) 219-1019
ANNA MANGIAFICO NNP
Nurse Practitioner (Neonatal, Critical Care)
5414 FREDERICKSBURG RD, SUITE 100
SAN ANTONIO, TX 78229
Bexar County (210) 541-8281
MRS. DARRAH D FOWLER NNP
Pediatrics (Neonatal-Perinatal Medicine)
5414 FREDERICKSBURG RD, SUITE 100
SAN ANTONIO, TX 78229
Bexar County (210) 541-8281

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 Javier Castillo's NPI number?

The NPI number for Javier Castillo is 1427386804. It was assigned to this individual provider in the NPPES registry on November 24, 2009.

Where is Javier Castillo located?

Javier Castillo practices at 5414 Fredericksburg Rd, San Antonio, TX 78229. The listed phone number is (210) 614-2209.

What is Javier Castillo's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Maternal & Fetal Medicine, with taxonomy code 207VM0101X.

Is Javier Castillo enrolled in Medicare?

Yes. Javier 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 Javier Castillo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Javier Castillo reassigns Medicare benefits to 2 organizations: Magella Medical Associates Billing, Inc. (Round Rock, TX) and Children's Physician Services Of South Texas (Corpus Christi, 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 Javier Castillo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Javier Castillo accept?

Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 6 other insurers list Javier 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.

When was this NPI record last updated?

The NPPES record for Javier Castillo was last updated on July 20, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.