DR. MARCOS DANIEL VILLARREAL (MD) – Internal Medicine Physician, NPI 1265095160

DR. MARCOS DANIEL VILLARREAL (MD) is a healthcare provider. based in Austin, Texas. specializing in INTERNAL MEDICINE, ENDOCRINOLOGY. They hold the professional credentials MD. They hold a License No. 35091 (NH). The NPI Number for DR. MARCOS DANIEL VILLARREAL (MD) is 1265095160

Main info

Male
7 Years Of Experience
Accepts Medicare Assignment
Name
DR. MARCOS DANIEL VILLARREAL (MD)
NPI
1265095160
Phone
(512) 324-8355
Address
UT AUSTIN DELL MEDICAL SCHOOL SETON INTERNAL MEDICINE
Enumeration Date
16 April 2019
Last Update Date
16 December 2025

Doctor Profile

Medical School Name
UNIVERSITY OF TEXAS SOUTHWESTERN MEDICAL SCHOOL AT DALLAS
Secondary Phone
3026451315
Graduation Year
2019 (7 years ago)
PAC ID
3779012869
Group Practice PAC ID
5496744864
Professional Enrollment ID
I20251212002607
Address ID
DE199584991LE12100DRXX400
Telehealth
Yes
Data current as of
20 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience65
Completeness85
Years active:7State licenses:4Digital endpointsOther names

13,290 INTERNAL MEDICINE in TX

Provider Addresses for DR. MARCOS DANIEL VILLARREAL (MD)

  • UT AUSTIN DELL MEDICAL SCHOOL SETON INTERNAL MEDICINE

    1500 RED RIVER (DELL SETON MEDICAL CENTER)

    AUSTIN, TX 787011918

    Phone: (512) 324-8355

    Type: Location

  • 232 Mitchell St Unit 102

    Millsboro, DE 199669412

    Phone: (302) 648-7999

    Fax: (302) 645-7698

    Type: Location

  • UT Austin Dell Medical School Seton Internal Medicine

    1500 Red River (Dell Seton Medical Center)

    Austin, TX 787011918

    Phone: (512) 324-8355

    Type: Location

  • 1 Medical Center Dr

    Lebanon, NH 037561000

    Phone: (603) 650-5000

    Fax: (603) 640-1228

    Type: Location

  • 12100 Black Swan Dr Ste 104

    Lewes, DE 199584991

    Phone: (302) 645-2244

    Fax: (888) 987-9645

    Type: Location

  • 1101 SAM PERRY BLVD STE 305

    FREDERICKSBURG, VA 224014465

    Phone: (540) 374-3290

    Type: Location

  • Dell Seton Medical Center at The University of Texas, 1500, Red River Street, Medical District, Austin, Travis County, Texas, 78701, United States

    UT AUSTIN DELL MEDICAL SCHOOL SETON INTERNAL MEDICINE

    AUSTIN, TX 787011918

    Phone:

    Type: Mailing

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

CMS reports 3 Open Payments records for all available years, with a total value of $168.

Total Amount is formed as General ($168) + Research ($0) + Ownership ($0) = $168.

Last reported payment date: 2023-12-05 • Largest payer in this snapshot: Novo Nordisk Inc ($147).

Total Amount

$168

General + Research + Ownership

Payments

3

Total payment records

General Amount

$168

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2023-12-05

Latest reported date

Top Companies

Largest payers in this snapshot

View all Open Payments →|Open Payments Risk Radar →

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2025-12-12

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking 3 Medicare enrollment records; no due dates published yet.

Enrollment records

3

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20250117001086IEndocrinologyVATBD
I20250731002913IInternal MedicineNHTBD
I20251212002607IEndocrinologyDETBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 78701)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 5496744864View full group profile
NameSpecialtyState
Family PracticeNY
-PA
Internal MedicineDE
-DE
-DE
Internal MedicineDE
Internal MedicineDE
Infectious Disease, Internal MedicineDE
Family PracticeNY
Nurse PractitionerVA

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Frequently asked questions

What number should I use to identify DR. MARCOS DANIEL VILLARREAL (MD) for billing?
Administrative and clinical systems typically use NPI 1265095160 for DR. MARCOS DANIEL VILLARREAL (MD).
Is DR. MARCOS DANIEL VILLARREAL (MD)'s NPI status active today?
Active status means DR. MARCOS DANIEL VILLARREAL (MD)'s NPI record is not deactivated in the public file.
What services align with DR. MARCOS DANIEL VILLARREAL (MD)'s listing?
DR. MARCOS DANIEL VILLARREAL (MD)'s public classification highlights Internal Medicine Physician. Clinical services aligned with this taxonomy classification.
Is DR. MARCOS DANIEL VILLARREAL (MD) tied to Austin, Texas?
If you are local to Austin, Texas, DR. MARCOS DANIEL VILLARREAL (MD) may be relevant to your search.
What is the difference between NPI and a medical license?
An NPI is a federal identifier; a medical license is issued by a state and governs where someone may practice.