Maria Vallejo-Nieto, M.D.
NPI 1962637967 · Family Medicine Physician · Sherman, TX
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maria Vallejo-Nieto, M.D. is a Family Medicine Physician provider in Sherman, TX (NPI 1962637967).
Provider details
- NPI number
- 1962637967
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- P1703 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
2,297 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 365 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 340 | $88 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 277 | $10 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 236 | $13 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 192 | $8 |
| Blood Test, Thyroid Stimulating Hormone (tsh)84443 | 157 | $16 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 84 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 389 | 109 |
| Levothyroxine Sodium | 302 | 74 |
| Amlodipine Besylate | 262 | 81 |
| Lisinopril | 255 | 70 |
| Metformin Hcl | 226 | 64 |
| Losartan Potassium | 204 | 59 |
| Rosuvastatin Calcium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,393 across 71 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 557 W Fm 120Pottsboro, TX 75076-9039Phone: (903) 786-3911Fax: (903) 786-8630
Registry dates
- Enumerated
- 2009-05-19
- Last updated
- 2020-08-21
- Certified
- 2020-08-21
Frequently asked questions
- What is Maria Vallejo-Nieto's NPI number?
- Maria Vallejo-Nieto's National Provider Identifier (NPI) is 1962637967, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maria Vallejo-Nieto's specialty?
- Maria Vallejo-Nieto is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Maria Vallejo-Nieto located?
- Maria Vallejo-Nieto's practice location on file with NPPES is 2907 Overland Trl Ste 200, Sherman, TX 75092-4498.
- What is Maria Vallejo-Nieto's phone number?
- The practice phone number listed in the NPPES registry for Maria Vallejo-Nieto is (903) 416-2650.
- Does Maria Vallejo-Nieto accept Medicare?
- Maria Vallejo-Nieto is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maria Vallejo-Nieto's NPI active?
- Yes — Maria Vallejo-Nieto's NPI (1962637967) is active in the NPPES registry as of the last update on 2020-08-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.