Quick answers
- Does Andy S. Chan accept Medicare assignment?
- Yes. Medicare's clinician data says Andy S. Chan 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.
- How many Medicare patients does Andy S. Chan see?
- In 2024, CMS data shows 601 Original Medicare patients and 2,953 services for Andy S. Chan. This counts Original Medicare only and measures volume, not quality.
- What is Andy S. Chan's NPI number?
- 1578643904. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Andy S. Chan, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 601 |
|---|---|
| Services billed to Medicare | 2,953 |
| Different services or procedures | 16 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)928 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)463 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)461 services
- Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)450 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)247 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease70%
- Arthritis68%
- Chronic kidney disease62%
- Heart failure62%
Hospitals where Andy S. Chan works
Medicare's Facility Affiliation Data lists Andy S. Chan 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 HospitalHouston, TX · Acute Care Hospital · Medicare rating: 5 of 5 stars · CCN 450358
- Houston Methodist West HospitalHouston, TX · Acute Care Hospital · Medicare rating: 5 of 5 stars · CCN 670077
Practice locations
Addresses where Andy S. Chan is enrolled with Medicare (CMS data updated October 2, 2026).
- 12001 Shadow Creek PkwyPearland, TX 77584 (713) 434‑3800
- 2130 W HolcombeHouston, TX 77030 (281) 218‑1996
Specialties
Find other Physical Medicine and Rehabilitation doctors in Texas →
Other rehabilitation doctors in Pearland
Clinicians with the same Medicare primary specialty in Pearland, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Boston University School Of Medicine |
| Graduation year | 1998 (28 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1578643904 |
| 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
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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