Quick answers
- Does Bach Kim Nguyen accept Medicare assignment?
- Medicare's clinician data says Bach Kim Nguyen may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Bach Kim Nguyen see?
- In 2024, CMS data shows 105 Original Medicare patients and 182 services for Bach Kim Nguyen. This counts Original Medicare only and measures volume, not quality.
- What is Bach Kim Nguyen's NPI number?
- 1942235734. 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 Bach Kim Nguyen, 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 | 105 |
|---|---|
| Services billed to Medicare | 182 |
| Different services or procedures | 15 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- New patient complete exam of visual system (92004)40 services
- Established patient complete exam of visual system (92014)37 services
- Photography of the retina (92250)36 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)20 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 cholesterol69%
- High blood pressure58%
- Arthritis31%
- Diabetes25%
- Ischemic heart disease22%
- Anxiety18%
Practice locations
Addresses where Bach Kim Nguyen is enrolled with Medicare (CMS data updated October 2, 2026).
- 1844 San Miguel Dr, Suite 312Walnut Creek, CA 94596 (925) 934‑4313
Specialties
- Optometryprimary
Other optometrists in Walnut Creek
Clinicians with the same Medicare primary specialty in Walnut Creek, CA — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Optometry school | University Of California - School Of Optometry |
| Graduation year | 1995 (31 years since optometry school) |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1942235734 |
| 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