NPPES file of Aug 9, 2026

William Robert Loesch, M.D.

Internal Medicine Physician · Brenham, TX

William Robert Loesch, M.D. is an internal medicine physician with a practice address in Brenham, Texas, and NPI 1225296437, issued on May 26, 2008. Check the license (Texas M8802, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1225296437
Name
William Robert Loesch
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
M8802 TX
Self-reported in NPPES; status is on the state search
Practice location
600 N Park St, Brenham, TX 77833
Phone
(979) 836-6153
Enumerated
May 26, 2008
Record last updated
Oct 8, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicaid ID
202986602 TX
Medicare enrollment
Enrolled (PECOS I20090625000301); accepts Medicare assignment
Medical or professional school
University Of Texas Medical Branch At Galveston, 2006
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 600 N Park St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Brianne Addicks, ANPAdult Health Nurse Practitioner1790983062
  2. Eric Alford, MDFamily Medicine Physician1235424029
  3. Katherine Alford, PA-CPhysician Assistant1063699866
  4. Mark Asmussen, P.A.Physician Assistant1134427602
  5. Kenneth Baker, MDPediatrics Physician1619970720
  6. Cassandra Bryant, MDPediatrics Physician1174526263

Verify William Robert Loesch in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license M8802
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Texas license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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6.5 times the Medicare Part D claims of the average internal medicine physician in 2024

20,587 Medicare Part D claims for 1,192 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 657 claims were for opioids.

  1. William Loesch20,587
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium1,330 claims
  2. Amlodipine Besylate811 claims
  3. Levothyroxine Sodium672 claims
  4. Lisinopril659 claims
  5. Losartan Potassium530 claims
  6. Pantoprazole Sodium502 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $212.36

2 payments; by number, the most common kind was food and beverage; the largest payer was Edwards Lifesciences Corporation. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. William Loesch$212.36
  2. Specialty average$1,303.06

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Scott And White ClinicCollege Station, TX

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

William Robert Loesch among 9,175 internal medicine physician records in Texas

William Robert Loesch, M.D. is one of 9,175 internal medicine physician records with a practice address in Texas. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 50% of them.

  • NPI issued2008 · 50% of these records are older, 46% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated2006 · median 2004 among the 6,088 with a school on file
  • Record last updated2020 · 49% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

5 internal medicine physician records list a practice address in Brenham

They are 5 of the 305 NPPES records with a practice address in Brenham, and 9,175 internal medicine physician records in Texas.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Kenneth Landgraf, MDBrenham, TX 778331457354847
  2. Bobby Marek, MDBrenham, TX 778331063415149
  3. Michael Schlabach, MDBrenham, TX 778331336107549
  4. Iqbal Singh, M.D.Brenham, TX 778331659754414
  5. Amina Alikhan, MDCollege Station, TX 778401518124171
  6. Bill Covington, M.D.College Station, TX 778401912168279
  7. Jadie Guo, M. D.College Station, TX 778401619156056
  8. Manuel Jose, M.D.College Station, TX 778401427018001

Common questions

What is William Robert Loesch, M.D.'s NPI number?

William Robert Loesch, M.D.'s National Provider Identifier (NPI) is 1225296437, issued on May 26, 2008. An NPI identifies a provider in billing; it is not a license.

Where is William Robert Loesch, M.D. located?

The NPPES record lists a practice address at 600 N Park St, Brenham, TX, 77833. Phone: (979) 836-6153. Providers update this record themselves, so call before visiting.

How can I verify William Robert Loesch, M.D.'s license?

NPPES lists Texas license number M8802, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does William Robert Loesch, M.D. prescribe under Medicare Part D?

In 2024, William Robert Loesch, M.D. had 20,587 Medicare Part D claims for 1,192 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.