William Loesch, M.D.
NPI 1225296437 · Internal Medicine Physician · Brenham, TX
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Loesch, M.D. is a Internal Medicine Physician provider in Brenham, TX (NPI 1225296437).
Provider details
- NPI number
- 1225296437
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- M8802 (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
18 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
3,157 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 | 2,047 | $9 |
| Automated Urinalysis Test81003 | 379 | $2 |
| 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 | 226 | $16 |
| 2019-Ncov Coronavirus, Sars-Cov-2/2019-Ncov (covid-19), Any Technique, Multiple Types Or Subtypes (includes All Targets), Non-CdcU0002 | 146 | $50 |
| Detection Test By Nucleic Acid for Strep (streptococcus, Group A), Amplified Probe Technique87651 | 139 | $34 |
| Detection Test By Nucleic Acid for Multiple Types Influenza Virus |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 223 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 1,330 | 357 |
| Amlodipine Besylate | 811 | 233 |
| Levothyroxine Sodium | 672 | 166 |
| Lisinopril | 659 | 187 |
| Losartan Potassium | 530 | 148 |
| Pantoprazole Sodium | 502 | 138 |
| Metformin Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$212 across 2 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
- 2008-05-26
- Last updated
- 2020-10-08
- Certified
- 2020-10-08
Frequently asked questions
- What is William Loesch's NPI number?
- William Loesch's National Provider Identifier (NPI) is 1225296437, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Loesch's specialty?
- William Loesch is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Loesch located?
- William Loesch's practice location on file with NPPES is 600 N Park St, Brenham, TX 77833-2610.
- What is William Loesch's phone number?
- The practice phone number listed in the NPPES registry for William Loesch is (979) 836-6153.
- Does William Loesch accept Medicare?
- William Loesch is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Loesch's NPI active?
- Yes — William Loesch's NPI (1225296437) is active in the NPPES registry as of the last update on 2020-10-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.