Quick answers
- Does Annette Chang Sims accept Medicare assignment?
- Yes. Medicare's clinician data says Annette Chang Sims 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 Annette Chang Sims see?
- In 2024, CMS data shows 913 Original Medicare patients and 2,488 services for Annette Chang Sims. This counts Original Medicare only and measures volume, not quality.
- What is Annette Chang Sims's NPI number?
- 1528262706. 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 Annette Chang Sims, 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 | 913 |
|---|---|
| Services billed to Medicare | 2,488 |
| Different services or procedures | 34 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)757 services
- Imaging of optic nerve (92133)404 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)404 services
- Exam of visual field with extended testing (92083)329 services
- Measurement of corneal curvature and depth of eye (92136)156 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 cholesterol65%
- High blood pressure61%
- Arthritis41%
- Diabetes24%
- Chronic kidney disease19%
- Depression18%
Practice locations
Addresses where Annette Chang Sims is enrolled with Medicare (CMS data updated October 2, 2026).
- 1007 Harlow Rd, Suite 100Springfield, OR 97477 (541) 687‑2110
Group practices
Medicare enrollment lists Annette Chang Sims as a member of this group (CMS data updated October 2, 2026).
- DRS Fine Hoffman and Sims LLC4 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Oregon
Clinicians with the same Medicare primary specialty in Oregon — not a recommendation.
Other clinicians in DRS Fine Hoffman and Sims LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of South Florida College Of Medicine |
| Graduation year | 2002 (24 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1528262706 |
| 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