John Darin, M.D.
NPI 1902801764 · Specialist · Westlake Village, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Darin, M.D. is a Specialist provider in Westlake Village, CA (NPI 1902801764).
Provider details
- NPI number
- 1902801764
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- C29520 (CA)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
21 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
739 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 | 449 | $139 |
| Photography of the Retina92250 | 115 | $41 |
| Imaging of Optic Nerve92133 | 51 | $40 |
| New Patient Complete Exam of Visual System92004 | 48 | $164 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 48 | $98 |
| Removal of Recurring Cataract in Lens Capsule Using a Laser66821 | 28 | $338 |
Typical Medicare-allowed amounts for these services range $40–$338 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 78 | 24 |
| Timolol Maleate | 42 | 16 |
| Tobramycin/Dexamethasonebrand: Tobramycin-Dexamethasone | 32 | 30 |
| Bimatoprostbrand: Lumigan | 25 | — |
| Brimonidine Tartrate | 22 | — |
| Brinzolamide | 14 | — |
| Latanoprostbrand: Xalatan | 13 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$51 across 2 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
- 2005-06-17
- Last updated
- 2013-03-12
Frequently asked questions
- What is John Darin's NPI number?
- John Darin's National Provider Identifier (NPI) is 1902801764, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Darin's specialty?
- John Darin is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is John Darin located?
- John Darin's practice location on file with NPPES is 696 Hampshire Rd, Westlake Village, CA 91361-2699.
- What is John Darin's phone number?
- The practice phone number listed in the NPPES registry for John Darin is (818) 933-6902.
- Does John Darin accept Medicare?
- John Darin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Darin's NPI active?
- Yes — John Darin's NPI (1902801764) is active in the NPPES registry as of the last update on 2013-03-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.