Quick answers
- Does Tina A. Giang accept Medicare assignment?
- Yes. Medicare's clinician data says Tina A. Giang 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 Tina A. Giang see?
- In 2024, CMS data shows 55 Original Medicare patients and 131 services for Tina A. Giang. This counts Original Medicare only and measures volume, not quality.
- What is Tina A. Giang's NPI number?
- 1811651409. 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 Tina A. Giang, 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 | 55 |
|---|---|
| Services billed to Medicare | 131 |
| Different services or procedures | 11 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Photography of the retina (92250)49 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)35 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)22 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 cholesterol67%
- High blood pressure65%
- Diabetes31%
- Arthritis27%
- Depression22%
- Atrial fibrillation22%
Practice locations
Addresses where Tina A. Giang is enrolled with Medicare (CMS data updated October 2, 2026).
- 94 -1480 Moaniani StWaipahu, HI 96797 (808) 432‑3100
Group practices
Medicare enrollment lists Tina A. Giang as a member of this group (CMS data updated October 2, 2026).
- Hawaii Permanente Medical Group Inc704 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Waipahu
Clinicians with the same Medicare primary specialty in Waipahu, HI — not a recommendation.
Other clinicians in Hawaii Permanente Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Graduation year | 2017 (9 years since optometry school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1811651409 |
| 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