Quick answers
- Does Cheng-Huai Ruan accept Medicare assignment?
- Yes. Medicare's clinician data says Cheng-Huai Ruan 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 Cheng-Huai Ruan see?
- In 2024, CMS data shows 206 Original Medicare patients and 8,116 services for Cheng-Huai Ruan. This counts Original Medicare only and measures volume, not quality.
- What is Cheng-Huai Ruan's NPI number?
- 1629210927. 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 Cheng-Huai Ruan, 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 | 206 |
|---|---|
| Services billed to Medicare | 8,116 |
| Different services or procedures | 54 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Injection, magnesium sulfate, per 500 mg (J3475)959 services
- Remote assessment of recorded video and/or images submitted by an established patient (e.g., store and forward), including interpretation with follow-up with the patient within 24 business hours, not originating from a related service provided within the p (G2250)790 services
- Brief communication technology-based service, e.g. virtual check-in, by a physician or other qualified health care professional who can report evaluation and management services, provided to an established patient, not originating from a related e/m servic (G2252)789 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)575 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)380 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 cholesterol75%
- High blood pressure60%
- Anxiety41%
- Arthritis37%
- Diabetes23%
- Ischemic heart disease22%
Hospitals where Cheng-Huai Ruan works
Medicare's Facility Affiliation Data lists Cheng-Huai Ruan 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.
- Memorial Hermann - Texas Medical CenterHouston, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · CCN 450068
- Memorial Hermann Katy HospitalKaty, TX · Acute Care Hospital · Medicare rating: 3 of 5 stars · CCN 450847
- Memorial Hermann Memorial City HospitalHouston, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · CCN 450610
Practice locations
Addresses where Cheng-Huai Ruan is enrolled with Medicare (CMS data updated October 2, 2026).
- 333 W Loop N, Suite 250Houston, TX 77024 (713) 690‑1991
Group practices
Medicare enrollment lists Cheng-Huai Ruan as a member of this group (CMS data updated October 2, 2026).
- Ruan Medical Group3 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Houston
Clinicians with the same Medicare primary specialty in Houston, TX — not a recommendation.
Other clinicians in Ruan Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2009 (17 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1629210927 |
| 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