Christopher Ta, MD
NPI 1609903020 · Ophthalmology Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christopher Ta, MD is a Ophthalmology Physician provider in Stanford, CA (NPI 1609903020).
Provider details
- NPI number
- 1609903020
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A54687 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
1,151 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 | 553 | $111 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 152 | $164 |
| Closure of Tear Duct Opening Using Plug68761 | 125 | $118 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 105 | $75 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 68 | $19 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Erythromycin Basebrand: Erythromycin | 186 | 115 |
| Doxycycline Hyclate | 106 | 28 |
| Cyclosporinebrand: Restasis | 91 | 34 |
| Moxifloxacin Hclbrand: Moxifloxacin | 78 | 43 |
| Valacyclovir Hclbrand: Valacyclovir | 71 | 23 |
| Lifitegrastbrand: Xiidra | 62 | 16 |
| Prednisolone Acetate | 52 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$428 across 4 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
- 2007-02-27
- Last updated
- 2024-04-04
- Certified
- 2024-04-04
Frequently asked questions
- What is Christopher Ta's NPI number?
- Christopher Ta's National Provider Identifier (NPI) is 1609903020, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Ta's specialty?
- Christopher Ta is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Christopher Ta located?
- Christopher Ta's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Christopher Ta's phone number?
- The practice phone number listed in the NPPES registry for Christopher Ta is (650) 723-4000.
- Does Christopher Ta accept Medicare?
- Christopher Ta is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christopher Ta's NPI active?
- Yes — Christopher Ta's NPI (1609903020) is active in the NPPES registry as of the last update on 2024-04-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.