Terry Hsieh, MD, PHD
NPI 1497251367 · Ophthalmology Physician · Irvine, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Terry Hsieh, MD, PHD is a Ophthalmology Physician provider in Irvine, CA (NPI 1497251367).
Provider details
- NPI number
- 1497251367
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- No
- License
- A164534 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
8 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
3 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 34 | 14 |
| Latanoprost | 19 | — |
| Timolol Maleate | 17 | — |
| Prednisolone Acetate | 16 | — |
| Ketorolac Tromethamine | 14 | — |
| Brimonidine Tartrate | 12 | — |
| Cyclosporine | 11 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$911 across 8 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 100 Stein PlzLos Angeles, CA 90095-6007Phone: (650) 504-3394
- 1275 York AveNew York, NY 10065-6007Phone: (212) 639-3210
Registry dates
- Enumerated
- 2018-04-01
- Last updated
- 2024-10-25
- Certified
- 2023-01-24
Frequently asked questions
- What is Terry Hsieh's NPI number?
- Terry Hsieh's National Provider Identifier (NPI) is 1497251367, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Terry Hsieh's specialty?
- Terry Hsieh is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Terry Hsieh located?
- Terry Hsieh's practice location on file with NPPES is 850 Health Sciences Rd, Irvine, CA 92617-3058.
- What is Terry Hsieh's phone number?
- The practice phone number listed in the NPPES registry for Terry Hsieh is (949) 824-2020.
- Does Terry Hsieh accept Medicare?
- Terry Hsieh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Terry Hsieh's NPI active?
- Yes — Terry Hsieh's NPI (1497251367) is active in the NPPES registry as of the last update on 2024-10-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.