Steven Corwin, MD
NPI 1720089964 · Ophthalmology Physician · Thousand Oaks, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Steven Corwin, MD is a Ophthalmology Physician provider in Thousand Oaks, CA (NPI 1720089964).
Provider details
- NPI number
- 1720089964
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G139740 (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
20 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
3,247 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 Complete Exam of Visual System92014 | 438 | $137 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 412 | $136 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 391 | $95 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 329 | $549 |
| Imaging of Retina92134 | 294 | $44 |
| Closure of Tear Duct Opening Using Plug68761 | 275 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisolone Acetate | 423 | 273 |
| Latanoprost | 286 | 54 |
| Ketorolac Tromethamine | 277 | 196 |
| Moxifloxacin Hclbrand: Moxifloxacin | 276 | 198 |
| Cyclosporinebrand: Restasis | 139 | 59 |
| Cyclosporine | 125 | 38 |
| Timolol Maleate | 100 | 32 |
| Lifitegrastbrand: Xiidra |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$958 across 30 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
- 2005-08-10
- Last updated
- 2021-03-09
- Certified
- 2021-03-09
Frequently asked questions
- What is Steven Corwin's NPI number?
- Steven Corwin's National Provider Identifier (NPI) is 1720089964, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steven Corwin's specialty?
- Steven Corwin is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Steven Corwin located?
- Steven Corwin's practice location on file with NPPES is 351 Rolling Oaks Dr Ste 102, Thousand Oaks, CA 91361-1279.
- What is Steven Corwin's phone number?
- The practice phone number listed in the NPPES registry for Steven Corwin is (805) 497-3744.
- Does Steven Corwin accept Medicare?
- Steven Corwin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Steven Corwin's NPI active?
- Yes — Steven Corwin's NPI (1720089964) is active in the NPPES registry as of the last update on 2021-03-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.