Quick answers
- Does Christina Koh accept Medicare assignment?
- Yes. Medicare's clinician data says Christina Koh accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Christina Koh's NPI number?
- 1821438649. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Christina Koh works
Medicare's Facility Affiliation Data lists Christina Koh at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Houston Methodist West HospitalHouston, TX · Acute Care Hospital · Medicare rating: 5 of 5 stars · CCN 670077
Practice locations
Addresses where Christina Koh is enrolled with Medicare (CMS data updated October 2, 2026).
- 18400 Katy Fwy, Suite 560Houston, TX 77094 (832) 522‑3240
- 18500 Katy FwyHouston, TX 77094 (832) 522‑8560
- 6445 Main St, Suite 2500Houston, TX 77030 (713) 441‑3150
- 7575 San Felipe St, Suite 155Houston, TX 77063 (713) 266‑9955
Group practices
Medicare enrollment lists Christina Koh as a member of these groups (CMS data updated October 2, 2026).
- TMH Physician Associates PLLC1,690 clinicians in the group
- Houston Methodist Specialty Physicians1,528 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Houston
Clinicians with the same Medicare primary specialty in Houston, TX — not a recommendation.
Other clinicians in TMH Physician Associates PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2013 (13 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1821438649 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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