J. XAVIER CASTILLO MD
NPI 1720013501
Internal Medicine in Houston, TX

Q: What is J. Xavier Castillo's NPI number?

The NPI number for J. Xavier Castillo is 1720013501. It was assigned to this individual provider in the NPPES registry on July 11, 2006. The provider is also known as Joseph Xavier Castillo MD.

Q: What is J. Xavier Castillo's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Active since July 11, 2006PECOS Enrolled

1111 AUGUSTA DR, HOUSTON, TX 77057(713) 442-2400 Get Directions Write a Review

NPPES record last updated: June 5, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jun 5, 2021, Apr 14, 2020, Mar 27, 2018 and 1 more (4 updates tracked since 2016).

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About J. Xavier Castillo Md NPPES

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

J. XAVIER CASTILLO MD (NPI 1720013501) is an individual internal medicine provider in Houston, Texas, licensed in Texas (K4016) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1720013501

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameJ. XAVIER CASTILLOCredential: MD

Location Address1111 AUGUSTA DRHouston, TX 77057-2209

Mailing Address11511 Shadow Creek PkwyPearland, TX 77584-7298 · (713) 442-0000

Phone(713) 442-2400

Sole ProprietorNo

Enumeration DateJuly 11, 2006

Last NPPES UpdateJune 5, 20214 updates tracked since enumeration

NPPES CertifiedJune 5, 2021

✔ NPI 1720013501 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in TX · K4016

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedPreventive Medicine · Public Health & General Preventive MedicineTaxonomy 2083P0901X · License K4016 (TX)

Also ListedPreventive Medicine · Occupational MedicineTaxonomy 2083X0100X · License K4016 (TX)

1111 AUGUSTA DR, Houston, TX 77057

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Other Names 1

Other Name (5)Joseph Xavier Castillo Md

Other Identifiers 3

Medicaid042829401TX

Medicaid042829403TX

Medicaid042829404TX

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

J. Xavier Castillo Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignment

Medicare enrollment records show J. Xavier Castillo reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Kelsey-Seybold Medical Group, PLLC

5.1 mi

Multi-Specialty

2727 W HOLCOMBE BLVD
Houston, TX 77025

Reassigned Medicare billing, Texas enrollment
1,649 clinicians in this Medicare group

NPI 1013915255 (713) 442-0000

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 77057 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

$134.06 typical visit price

range $58.24 – $176.98

Typical copayment $33.51 (range $14.56 – $44.24)

Most-billed visit code 99204

Established Patient

$102.71 typical visit price

range $18.60 – $143.93

Typical copayment $25.67 (range $4.65 – $35.98)

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.

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.

LAURA ZIVLEY OD

Optometrist