1. Home
  2. Directory
  3. Texas
  4. New Braunfels
  5. Internal Medicine
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

ALLYSSA LORIAN CASTILLO DNP
NPI 1780454561
Internal Medicine in New Braunfels, TX

Active since January 03, 2024PECOS Enrolled
598 N UNION AVE STE 250, NEW BRAUNFELS, TX 78130(830) 359-5859 Get Directions Write a Review

NPPES record last updated: July 15, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 15, 2026, Jan 3, 2024 (2 updates tracked since 2024).

About Allyssa Lorian Castillo Dnp NPPES

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

ALLYSSA LORIAN CASTILLO DNP (NPI 1780454561) is an individual internal medicine provider in New Braunfels, Texas, licensed in Texas (1139450) and active in the NPI registry since January 2024. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1780454561
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameALLYSSA LORIAN CASTILLOCredential: DNP
Location Address598 N UNION AVE STE 250New Braunfels, TX 78130-4196
Mailing Address521 Lockwood StSan Marcos, TX 78666-7402 · (512) 214-9946
Phone(830) 359-5859
Sole ProprietorNo
Enumeration DateJanuary 3, 2024
Last NPPES UpdateJuly 15, 20262 updates tracked since enumeration
NPPES CertifiedJuly 15, 2026
✔ NPI 1780454561 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in TX · 1139450
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.
598 N UNION AVE STE 250, New Braunfels, TX 78130
Open in Google Maps ↗

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, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Allyssa Lorian Castillo Dnp 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78130 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
$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.

Other Providers at the Same Location NPPES

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

HILL COUNTRY TRANSITIONAL CARE MEDICINE
Internal Medicine
598 N UNION AVE STE 250
NEW BRAUNFELS, TX 78130
Guadalupe County (830) 359-5859

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 Allyssa Castillo's NPI number?

The NPI number for Allyssa Castillo is 1780454561. It was assigned to this individual provider in the NPPES registry on January 3, 2024.

Where is Allyssa Castillo located?

Allyssa Castillo practices at 598 N Union Ave Ste 250, New Braunfels, TX 78130. The listed phone number is (830) 359-5859.

What is Allyssa Castillo's specialty?

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

Is Allyssa Castillo enrolled in Medicare?

Yes. Allyssa Castillo is registered in the Medicare PECOS enrollment system.

What insurance does Allyssa 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 5 other insurers list Allyssa 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 Allyssa Castillo was last updated on July 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 30 days 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.