Mary Castro, MD
NPI 1942301130 · Family Medicine Physician · Nederland, TX
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Castro, MD is a Family Medicine Physician provider in Nederland, TX (NPI 1942301130).
Provider details
- NPI number
- 1942301130
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- N1576 (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
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,477 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 | 227 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 220 | $119 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 197 | $10 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 194 | $13 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 188 | $7 |
| Urinalysis Using Microscope81015 | 90 | $3 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 238 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 1,071 | 324 |
| Amlodipine Besylate | 861 | 263 |
| Levothyroxine Sodium | 832 | 226 |
| Lovastatin | 738 | 220 |
| Losartan Potassium | 684 | 213 |
| Gabapentin | 655 | 191 |
| Omeprazole | 561 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$422 across 22 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
Registry dates
- Enumerated
- 2006-09-26
- Last updated
- 2022-07-28
- Certified
- 2022-07-28
Frequently asked questions
- What is Mary Castro's NPI number?
- Mary Castro's National Provider Identifier (NPI) is 1942301130, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Castro's specialty?
- Mary Castro is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Castro located?
- Mary Castro's practice location on file with NPPES is 2400 Highway 365, Nederland, TX 77627-6249.
- What is Mary Castro's phone number?
- The practice phone number listed in the NPPES registry for Mary Castro is (409) 833-9797.
- Does Mary Castro accept Medicare?
- Mary Castro is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Castro's NPI active?
- Yes — Mary Castro's NPI (1942301130) is active in the NPPES registry as of the last update on 2022-07-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.