Christopher Hsu, MD
NPI 1336167618 · Ophthalmology Physician · El Cajon, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christopher Hsu, MD is a Ophthalmology Physician provider in El Cajon, CA (NPI 1336167618).
Provider details
- NPI number
- 1336167618
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A65973 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
3,146 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,011 | $137 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 537 | $97 |
| Imaging of Retina92134 | 497 | $44 |
| Imaging of Optic Nerve92133 | 188 | $40 |
| Photography of the Retina92250 | 173 | $41 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 113 | $177 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 35 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 904 | 207 |
| Timolol Maleate | 465 | 111 |
| Prednisolone Acetate | 365 | 209 |
| Moxifloxacin Hclbrand: Moxifloxacin | 322 | 193 |
| Bimatoprostbrand: Lumigan | 284 | 56 |
| Erythromycin Basebrand: Erythromycin | 233 | 117 |
| Ketorolac Tromethamine | 230 | 153 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,580 across 45 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
Registry dates
- Enumerated
- 2006-07-17
- Last updated
- 2021-04-01
- Certified
- 2021-04-01
Frequently asked questions
- What is Christopher Hsu's NPI number?
- Christopher Hsu's National Provider Identifier (NPI) is 1336167618, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Hsu's specialty?
- Christopher Hsu is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Christopher Hsu located?
- Christopher Hsu's practice location on file with NPPES is 225 W Madison Ave, El Cajon, CA 92020.
- What is Christopher Hsu's phone number?
- The practice phone number listed in the NPPES registry for Christopher Hsu is (619) 442-0844.
- Does Christopher Hsu accept Medicare?
- Christopher Hsu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christopher Hsu's NPI active?
- Yes — Christopher Hsu's NPI (1336167618) is active in the NPPES registry as of the last update on 2021-04-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.