Quick answers
- Does Claire H. Chang accept Medicare assignment?
- Yes. Medicare's clinician data says Claire H. Chang 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 Claire H. Chang see?
- In 2024, CMS data shows 191 Original Medicare patients and 888 services for Claire H. Chang. This counts Original Medicare only and measures volume, not quality.
- What is Claire H. Chang's NPI number?
- 1568423200. 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 Claire H. Chang, 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 | 191 |
|---|---|
| Services billed to Medicare | 888 |
| Different services or procedures | 25 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)193 services
- Photography of the retina (92250)146 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)97 services
- Imaging of retina (92134)86 services
- Imaging of optic nerve (92133)83 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%
- Arthritis46%
- Diabetes40%
- Ischemic heart disease29%
- Chronic kidney disease29%
Practice locations
Addresses where Claire H. Chang is enrolled with Medicare (CMS data updated October 2, 2026).
- 18850 S Memorial BlvdHumble, TX 77338 (281) 446‑7900
- 5115 Main StHouston, TX 77002 (713) 580‑2550
Group practices
Medicare enrollment lists Claire H. Chang as a member of this group (CMS data updated October 2, 2026).
- Mann Eye Center, PA48 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Humble
Clinicians with the same Medicare primary specialty in Humble, TX — not a recommendation.
Other clinicians in Mann Eye Center, PA
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Baylor College Of Medicine |
| Graduation year | 1995 (31 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1568423200 |
| 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
- 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