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Ophthalmologists
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Medicare + 7 Networks
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About Dr. Kathleen J. Dennis-Zarate
Background and practice information
Dr. Kathleen J. Dennis-Zarate is an ophthalmologist with over 35 years of clinical experience serving patients in the Montrose, CA area. She completed her medical training at Warren Alpert Medical School Of Brown University and has been in practice since 1991. She currently practices at Kathleen J Dennis-zarate Md A Medical Corp.
Dr. Kathleen J. Dennis-Zarate's clinical practice focuses on treating patients with glaucoma and high eye pressure, glaucoma, as well as performing cataract removal procedures.
Dr. Kathleen J. Dennis-Zarate is in-network with 7 insurance providers, including Aetna, Blue Shield of California, Centene, and 4 more. Patients are encouraged to verify coverage with her office before scheduling an appointment.
At a Glance
Education
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1 location
Kathleen J Dennis-Zarate Md A Medical Corp
Primary2330 Honolulu Ave
Montrose, CA 91020
(818) 249-6447
Affiliations
Hospital and facility affiliations
Treatment & Experience
Clinical practice and procedure experience for Dr. Kathleen J. Dennis-Zarate
Dr. Kathleen Dennis-Zarate is an experienced ophthalmologist in Montrose, CA with a demonstrated track record in cataract removal procedures. Based on verified procedure data reported to the Centers for Medicare & Medicaid Services (CMS), Dr. Dennis-Zarate has significant surgical experience across key procedures.
Cataract surgery
Dr. Dennis-Zarate has performed 304 cataract removal procedures, placing among the top 10% of surgeons nationwide for this procedure. This exceptionally high volume of experience is a meaningful indicator when choosing a cataract surgeon in Montrose, CA, as medical research has consistently linked higher procedure volumes with improved patient outcomes and lower complication rates.
Services & Procedures
Dr. Kathleen J. Dennis-Zarate's clinical practice encompasses office visits, diagnostic imaging, eye care. Based on Medicare utilization data, Dr. Kathleen J. Dennis-Zarate has provided a substantial volume of services, reflecting an active and established practice in ophthalmology.
Office Visits
103 servicesDr. Kathleen J. Dennis-Zarate provides patient consultations ranging from routine follow-ups to comprehensive evaluations, including follow-up visit and new patient visit. Medicare patients typically pay significantly less than the standard charge for these services, with Medicare-approved rates averaging 49% below the billed amount.
Diagnostic Imaging
96 servicesDr. Kathleen J. Dennis-Zarate utilizes diagnostic imaging to evaluate and monitor patient conditions, with ct scan of cornea being a key part of her practice. Medicare patients typically pay significantly less than the standard charge for these services, with Medicare-approved rates averaging 55% below the billed amount.
Eye Care
2,772 servicesDr. Kathleen J. Dennis-Zarate provides comprehensive eye care including examinations, imaging, and disease monitoring, including comprehensive eye exam, removal of recurring cataract in lens capsule using a laser, and other related services. Medicare patients typically pay significantly less than the standard charge for these services, with Medicare-approved rates averaging 56% below the billed amount.
Treatment Approach
Dr. Kathleen J. Dennis-Zarate's treatment approach includes prescribing Cyclosporine (Restasis), Latanoprost, Timolol Maleate for her patients. These medications are commonly used for treating glaucoma and high eye pressure, glaucoma. She prescribing profile reflects experience across a wide range of treatments, addressing multiple aspects of patient care within her specialty. Dr. Kathleen J. Dennis-Zarate has treated a significant number of Medicare patients, demonstrating an established practice in this area.
Source: CMS Medicare Provider Utilization and Payment Data, 2023.
Insurance Networks
Accepted insurance plans and networks
Dr. Kathleen J. Dennis-Zarate accepts 37 plans from 7 insurers, including Cigna, Humana, Aetna.
Source: CMS Transparency in Coverage filings (March 2026). Network participation may change — verify with the provider's office before scheduling.
Quality & Safety
CMS quality performance and patient safety measures
Below Average
CMS Quality Score · Out of 100
Dr. Dennis-Zarate received a quality score of 8.0 out of 100 from the Centers for Medicare & Medicaid Services (CMS). CMS evaluates ophthalmologists through the Merit-based Incentive Payment System (MIPS) across clinical quality, cost efficiency, and care coordination. Patients in Montrose, CA may wish to discuss quality metrics and care approaches directly with the provider.
Clinical Quality
0.0/100Measures the quality of care provided based on clinical outcomes and patient safety
Cost Efficiency
26.7/100Evaluates how efficiently healthcare resources are used while maintaining quality
Care Improvement
0.0/40Reflects participation in activities that improve clinical practice and patient engagement
Source: CMS Merit-based Incentive Payment System
Financial Transparency
Industry payment disclosures
Pharmaceutical and medical device companies disclosed $1.1K in payments to Dr. Kathleen J. Dennis-Zarate in 2024, primarily from Alcon Vision LLC for food and beverage. These disclosures are required by federal law under the Physician Payments Sunshine Act.
Top Paying Companies
Source: CMS Open Payments, 2024.
Patient Reviews
Reviews and ratings from patients
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About Ophthalmology
Specialty overview and common conditions
An ophthalmologist is a medical doctor who specializes in the comprehensive medical and surgical care of the eyes. Unlike optometrists who primarily provide vision care and prescribe glasses, ophthalmologists are physicians who diagnose and treat all eye diseases, perform eye surgery (cataract surge...
Common conditions treated by ophthalmology specialists:
- Cataracts
- Glaucoma
- Age-Related Macular Degeneration (AMD)
- Diabetic Retinopathy
Frequently Asked Questions
Common questions about Kathleen J. Dennis-Zarate
Does Dr. Dennis-Zarate accept Medicare?
Yes, Dr. Dennis-Zarate accepts Medicare assignment. Patients with Medicare coverage can see Dr. Dennis-Zarate and typically pay less out of pocket when using a provider who accepts Medicare assignment.
What insurance does Dr. Dennis-Zarate accept?
Dr. Dennis-Zarate is in-network with 7 insurance providers, including Aetna, Blue Shield of California, Centene, Cigna, Humana, and 2 more. Insurance networks can change, so patients should verify their specific plan coverage directly with Dr. Dennis-Zarate's office before scheduling.
Does Dr. Dennis-Zarate offer telehealth or virtual appointments?
Dr. Dennis-Zarate does not currently list telehealth services. For virtual care options, contact the office directly or consider other ophthalmology providers in Montrose who offer telehealth.
What conditions does Dr. Dennis-Zarate treat?
As a ophthalmology specialist, Dr. Dennis-Zarate commonly treats conditions including cataracts, glaucoma, age-related macular degeneration (amd), diabetic retinopathy, dry eye disease, and other related health concerns. Contact the office to discuss your specific healthcare needs.
What medications does Dr. Dennis-Zarate commonly prescribe?
Based on Medicare prescribing data, Dr. Dennis-Zarate commonly prescribes medications including Cyclosporine, Latanoprost, Timolol Maleate. The specific medications prescribed depend on each patient's individual diagnosis and health needs. Patients should discuss treatment options directly with Dr. Dennis-Zarate during their consultation.
What is Dr. Dennis-Zarate's quality rating?
Dr. Dennis-Zarate has received a quality score of 8.0 out of 100 from the Centers for Medicare & Medicaid Services (CMS) through the Merit-based Incentive Payment System (MIPS). This score reflects performance across quality measures, promoting interoperability, improvement activities, and cost efficiency.
Where did Dr. Dennis-Zarate go to medical school?
Dr. Dennis-Zarate completed medical training at Warren Alpert Medical School Of Brown University and has been practicing since 1991, bringing over 35 years of clinical experience.
Where is Dr. Dennis-Zarate's office located?
Dr. Dennis-Zarate practices at 2330 HONOLULU AVE, Montrose, CA 91020 at KATHLEEN J DENNIS-ZARATE MD A MEDICAL CORP. You can reach the office by calling (818) 249-6447.
How do I make an appointment with Dr. Dennis-Zarate?
To schedule an appointment with Dr. Dennis-Zarate, call the office at (818) 249-6447. New patients should have their insurance information and medical records ready when calling.
Data source: CMS National Provider Registry ·
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