Maria Chapa, MD
NPI 1457443012 · Internal Medicine Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maria Chapa, MD is a Internal Medicine Physician provider in San Antonio, TX (NPI 1457443012).
Provider details
- NPI number
- 1457443012
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- M5096 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
786 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 237 | $113 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 141 | $75 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 101 | $164 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 69 | $87 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 67 | $124 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 143 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 227 | 58 |
| Gabapentin | 201 | 44 |
| Amlodipine Besylate | 157 | 42 |
| Montelukast Sodium | 152 | 36 |
| Atorvastatin Calcium | 137 | 45 |
| Metformin Hcl | 131 | 33 |
| Trazodone Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$937 across 40 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
- 2006-09-29
- Last updated
- 2024-10-30
- Certified
- 2024-10-30
Frequently asked questions
- What is Maria Chapa's NPI number?
- Maria Chapa's National Provider Identifier (NPI) is 1457443012, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maria Chapa's specialty?
- Maria Chapa is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Maria Chapa located?
- Maria Chapa's practice location on file with NPPES is 8004 West Ave Ste 1, San Antonio, TX 78213-1870.
- What is Maria Chapa's phone number?
- The practice phone number listed in the NPPES registry for Maria Chapa is (210) 340-0801.
- Does Maria Chapa accept Medicare?
- Maria Chapa is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maria Chapa's NPI active?
- Yes — Maria Chapa's NPI (1457443012) is active in the NPPES registry as of the last update on 2024-10-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.