Quick answers
- Which hospitals does John Knecht Iii work at?
- Medicare's official clinician data lists John Knecht Iii at 3 hospitals: HCA Houston Healthcare Clear Lake, Houston Methodist Clear Lake Hospital and UTMB Health League City Campus Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John Knecht Iii see patients?
- Medicare's clinician data lists 5 practice locations, including Alvin, TX, Houston, TX and Webster, TX. Call before your visit to confirm the address.
- What is John Knecht Iii's specialty?
- Medicare lists Medical Oncology as the primary specialty.
- Does John Knecht Iii accept Medicare assignment?
- Yes. Medicare's clinician data says John Knecht Iii accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for John Knecht Iii?
- (832) 554-1005, as listed in official Medicare / NPI Registry data.
- What is John Knecht Iii's NPI number?
- 1639360829. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John Knecht Iii works
Medicare's Facility Affiliation Data lists John Knecht Iii at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- HCA Houston Healthcare Clear LakeWebster, TX · Acute Care Hospital · CCN 450617
- Houston Methodist Clear Lake HospitalNassau Bay, TX · Acute Care Hospital · CCN 450709
- UTMB Health League City Campus HospitalLeague City, TX · Acute Care Hospital · CCN 450018
Practice locations
Addresses where John Knecht Iii is enrolled with Medicare (CMS data updated 2026-10-02).
- 1111 W Adoue StAlvin, TX 77511
- 11914 Astoria Blvd, Suite 125Houston, TX 77089 (832) 554‑1005
- 600 N KobayashiWebster, TX 77598
- 600 N Kobayashi, Suite 310Webster, TX 77598 (281) 724‑1860
- 9303 Pinecroft Dr, Suite 280Shenandoah, TX 77380 (832) 813‑5259
Group practices
Medicare enrollment lists John Knecht Iii as a member of these groups (CMS data updated 2026-10-02).
- CLS Health PLLC180 clinicians in the group
- Stephen F Austin Community Health Center, Inc.97 clinicians in the group
- Texienne Physicians Medical Association PLLC4 clinicians in the group
Specialties
- Medical Oncologyprimary
Other oncologists in Texas
Clinicians with the same Medicare primary specialty in Texas — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2007 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1639360829 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians