Stewart Niefield, MD
NPI 1255336871 · Internal Medicine Physician · Houston, TX
Stewart Niefield, MD is a Internal Medicine Physician provider in Houston, TX (NPI 1255336871).
Provider details
- NPI number
- 1255336871
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- F8258 (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
21 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
361 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) |
|---|---|---|
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 52 | $10 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 51 | $8 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 44 | $13 |
| 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 | 41 | $16 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 33 | $128 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent Visit |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 57 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 253 | 121 |
| Losartan Potassium | 149 | 66 |
| Levothyroxine Sodium | 128 | 63 |
| Amlodipine Besylate | 99 | 48 |
| Rosuvastatin Calcium | 88 | 41 |
| Metformin Hcl | 85 | 38 |
| Simvastatin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$187 across 8 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
- 2005-06-20
- Last updated
- 2013-09-25
Frequently asked questions
- What is Stewart Niefield's NPI number?
- Stewart Niefield's National Provider Identifier (NPI) is 1255336871, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stewart Niefield's specialty?
- Stewart Niefield is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Stewart Niefield located?
- Stewart Niefield's practice location on file with NPPES is 4543 Post Oak Place Drive, Houston, TX 77027.
- What is Stewart Niefield's phone number?
- The practice phone number listed in the NPPES registry for Stewart Niefield is (713) 797-1087.
- Is Stewart Niefield's NPI active?
- Yes — Stewart Niefield's NPI (1255336871) is active in the NPPES registry as of the last update on 2013-09-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.