David Gwynn, M.D
NPI 1003837766 · Ophthalmology Physician · Mission Viejo, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Gwynn, M.D is a Ophthalmology Physician provider in Mission Viejo, CA (NPI 1003837766).
Provider details
- NPI number
- 1003837766
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Male
- Sole proprietor
- No
- License
- G86237 (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
625 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 | 196 | $138 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 139 | $98 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 66 | $179 |
| Imaging of Retina92134 | 44 | $41 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 42 | $38 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisolone Acetate | 516 | 353 |
| Ofloxacin | 398 | 282 |
| Latanoprost | 286 | 105 |
| Ketorolac Tromethamine | 235 | 140 |
| Cyclosporinebrand: Restasis | 104 | 48 |
| Timolol Maleate | 80 | 27 |
| Cyclosporine | 77 | 48 |
| Brimonidine Tartrate | 75 | 28 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,230 across 34 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
- 2006-07-21
- Last updated
- 2020-01-10
- Certified
- 2020-01-10
Frequently asked questions
- What is David Gwynn's NPI number?
- David Gwynn's National Provider Identifier (NPI) is 1003837766, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Gwynn's specialty?
- David Gwynn is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is David Gwynn located?
- David Gwynn's practice location on file with NPPES is 22691 Plaza Drive, Mission Viejo, CA 92691.
- What is David Gwynn's phone number?
- The practice phone number listed in the NPPES registry for David Gwynn is (949) 364-0225.
- Does David Gwynn accept Medicare?
- David Gwynn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Gwynn's NPI active?
- Yes — David Gwynn's NPI (1003837766) is active in the NPPES registry as of the last update on 2020-01-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.