Mark Barak, MD
NPI 1467594838 · Ophthalmology Physician · La Verne, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Barak, MD is a Ophthalmology Physician provider in La Verne, CA (NPI 1467594838).
Provider details
- NPI number
- 1467594838
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G74472 (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
1,254 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 Problem Focused Exam of Visual System92012 | 276 | $98 |
| Imaging of Retina92134 | 227 | $44 |
| Established Patient Complete Exam of Visual System92014 | 194 | $138 |
| Complete Ultrasound of Within the Brain Blood Flow93886 | 71 | $307 |
| Ultrasound of Within the Brain Blood Flow Following Medication93890 | 71 | $318 |
| Ultrasound of Within the Brain Blood Flow for Blood Clots93892 | 71 | $182 |
| Injection of Drug Into Eye |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 627 | 140 |
| Tobramycin/Dexamethasonebrand: Tobramycin-Dexamethasone | 562 | 290 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 399 | 99 |
| Prednisolone Acetate | 305 | 159 |
| Ketorolac Tromethamine | 242 | 138 |
| Timolol Maleate | 185 | 54 |
| Neomycin/Polymyxin B/Dexamethabrand: Neomycin-Polymyxin-Dexameth | 68 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$626 across 29 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
- 2007-02-13
- Last updated
- 2020-02-14
- Certified
- 2020-02-14
Frequently asked questions
- What is Mark Barak's NPI number?
- Mark Barak's National Provider Identifier (NPI) is 1467594838, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Barak's specialty?
- Mark Barak is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Barak located?
- Mark Barak's practice location on file with NPPES is 1911 Foothill Blvd, La Verne, CA 91750-3516.
- What is Mark Barak's phone number?
- The practice phone number listed in the NPPES registry for Mark Barak is (909) 596-5900.
- Does Mark Barak accept Medicare?
- Mark Barak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Barak's NPI active?
- Yes — Mark Barak's NPI (1467594838) is active in the NPPES registry as of the last update on 2020-02-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.