Marcos Villarreal, MD
NPI 1265095160 · Internal Medicine Physician · Fredericksburg, VA
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Provider details
- NPI number
- 1265095160
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 35091 (NH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
5 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Semaglutidebrand: Ozempic | 44 | 24 |
| Levothyroxine Sodium | 33 | 23 |
| Insulin Degludecbrand: Tresiba Flextouch U-100 | 32 | 18 |
| Empagliflozin/Metformin Hclbrand: Synjardy Xr | 24 | 13 |
| Dulaglutidebrand: Trulicity | 18 | — |
| Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar | 17 | 14 |
Practice location
Mailing address
Additional practice locations (4)
- 12100 Black Swan Dr Ste 104Lewes, DE 19958-4991Phone: (302) 645-2244Fax: (888) 987-9645
- 232 Mitchell St Unit 102Millsboro, DE 19966-9412Phone: (302) 648-7999Fax: (302) 645-7698
- 1 Medical Center DrLebanon, NH 03756-1000Phone: (603) 650-5000Fax: (603) 640-1228
- Ut Austin Dell Medical School Seton Internal Medicine1500 Red River (dell Seton Medical Center)Austin, TX 78701-1918Phone: (512) 324-8355
Registry dates
- Enumerated
- 2019-04-16
- Last updated
- 2025-12-16
- Certified
- 2025-12-16
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.