Marcos Daniel Villarreal, MD
Internal Medicine · Fredericksburg, VA
At a glance
1101 Sam Perry Blvd Ste 305, Fredericksburg, VA 22401-4465
NPPES record updated Dec 16, 2025. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
1101 Sam Perry Blvd Ste 305Fredericksburg, VA 22401-4465
Additional reported practice locations
1 Medical Center DrLebanon, NH 037561000
Phone: 6036505000
Fax: 6036401228 232 Mitchell St Unit 102
Millsboro, DE 199669412
Phone: 3026487999
Fax: 3026457698 12100 Black Swan Dr Ste 104
Lewes, DE 199584991
Phone: 3026452244
Fax: 8889879645 Ut Austin Dell Medical School Seton Internal Medicine
1500 Red River (Dell Seton Medical Center)
Austin, TX 787011918
Phone: 5123248355
Education & affiliations
- Medical / professional school
- University Of Texas Southwestern Medical School At Dallas
- Graduation year
- 2019
- CMS specialties
- Endocrinology · Internal Medicine
CMS reports telehealth services for this clinician. Confirm current services and availability with the practice.
Practice groups
Reported hospital affiliations
- Alice Peck Day Memorial Hospital Lebanon, NH
- Beebe Medical Center Lewes, DE
- Cheshire Medical Center Keene, NH
- Mary Hitchcock Memorial Hospital Lebanon, NH
- Mary Washington Hospital Fredericksburg, VA
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Service-mix comparison is unavailable for this NPI in the imported Medicare service file.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Food and beverage | $465.15 |
Reporting companies
| Company | Amount |
|---|---|
| CORCEPT THERAPEUTICS | $155.52 |
| AMGEN INC. | $111.86 |
| MEDTRONIC, INC. | $39.89 |
| INSULET CORPORATION | $38.50 |
| NOVO NORDISK INC | $32.40 |
| TANDEM DIABETES CARE, INC. | $26.11 |
| LILLY USA, LLC | $23.55 |
| BIOTRONIK NRO, INC. | $23.13 |
| Other reporting companies | $14.19 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Internal Medicine
- Taxonomy code
- 207R00000X
- Enumeration date
- Apr 16, 2019
- Record updated
- Dec 16, 2025
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD
Reported taxonomies and licenses
207R00000X · Primary
License reported: 35091 NH
207R00000X
License reported: 0101284157 VA
207R00000X
License reported: BP10067181 TX
207RE0101X
License reported: C1-0028811 DE
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
1101 Sam Perry Blvd Ste 305Fredericksburg, VA 22401-4465
- Phone
- (540) 374-3290
Mailing address
1500 RED RIVER STUT AUSTIN DELL MEDICAL SCHOOL SETON INTERNAL MEDICINE
AUSTIN, TX 787011918
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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