Karen Stewart, M.D.
NPI 1295755981 · Internal Medicine Physician · Helotes, TX
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Stewart, M.D. is a Internal Medicine Physician provider in Helotes, TX (NPI 1295755981).
Provider details
- NPI number
- 1295755981
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 12842 (PR)
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
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,802 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 269 | $122 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 175 | $16 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 161 | $10 |
| Hemoglobin A1c Level83036 | 142 | $9 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 131 | $13 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 96 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 273 | 92 |
| Levothyroxine Sodium | 237 | 75 |
| Rosuvastatin Calcium | 205 | 79 |
| Lisinopril | 164 | 58 |
| Amlodipine Besylate | 155 | 50 |
| Losartan Potassium | 133 | 47 |
| Gabapentin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,385 across 77 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)
- Carr. 110 Km. 21.6Bo. AceitunasMoca, PR 00676Phone: (787) 997-4790Fax: (787) 997-4790
Registry dates
- Enumerated
- 2006-07-19
- Last updated
- 2022-10-18
- Certified
- 2022-10-18
Frequently asked questions
- What is Karen Stewart's NPI number?
- Karen Stewart's National Provider Identifier (NPI) is 1295755981, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Stewart's specialty?
- Karen Stewart is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Stewart located?
- Karen Stewart's practice location on file with NPPES is 12952 Bandera Rd Ste 105, Helotes, TX 78023-4690.
- What is Karen Stewart's phone number?
- The practice phone number listed in the NPPES registry for Karen Stewart is (210) 436-8400.
- Does Karen Stewart accept Medicare?
- Karen Stewart is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Stewart's NPI active?
- Yes — Karen Stewart's NPI (1295755981) is active in the NPPES registry as of the last update on 2022-10-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.