Dr. Kathleen J. Dennis-Zarate, MD
- Medicare services, 2024
- 3,390
- Medicare patients, 2024
- 1,175
- Part D claims, 2024
- 4,558
- MIPS score, 2024
- 75
- Industry payments
- $8,208
- Practice address
- 222 W Eulalia St, Glendale, CA 91204
- Practice phone
- Call (818) 244-8161
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Colorectal Surgery Institute
Glendale, California
Find Dr. Dennis-Zarate's professional email, personal email and mobile number
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Dr. Kathleen J. Dennis-Zarate is an ophthalmologist in Glendale, California
Dr. Dennis-Zarate practices at Colorectal Surgery Institute in Glendale, California.
Dr. Dennis-Zarate's NPI, 1760450399, was assigned on March 9, 2006. Dr. Dennis-Zarate graduated from Warren Alpert Medical School of Brown University in 1991. Dr. Dennis-Zarate holds California license G81715.
- NPI
- 1760450399NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1759362643
- NPI enumeration date
- March 9, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (818) 244-8161
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Kathleen J. Dennis-Zarate practices at Colorectal Surgery Institute in Glendale, California
Dr. Dennis-Zarate's primary practice is Colorectal Surgery Institute, at 222 W Eulalia St, Glendale, CA 91204 in Los Angeles County. The practice phone is (818) 244-8161.
- Colorectal Surgery Institute222 W Eulalia St, Glendale, CA 91204 · Los Angeles CountyPhone(818) 244-8161
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Kathleen J. Dennis-Zarate is affiliated with 2 sites of care and 1 medical group
Dr. Dennis-Zarate's primary practice is Colorectal Surgery Institute in Glendale, California. Dmand AI also links Dr. Dennis-Zarate to 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Kathleen J. Dennis-Zarate's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Dennis-Zarate practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Colorectal Surgery Institute | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Kathleen J. Dennis-Zarate is one of 2,621 ophthalmologists in California
Ophthalmology is Dr. Dennis-Zarate's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Dennis-Zarate is licensed in California.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
Ophthalmologists near Dr. Dennis-Zarate
Counts of ophthalmologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Kathleen J. Dennis-Zarate billed Medicare for 3,390 services in 2024
CMS data shows 3,390 Medicare services from Dr. Dennis-Zarate across 14 procedure codes in 2024, for 1,175 Medicare patients. Medicare paid $317,634 for them.
Dr. Dennis-Zarate's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 2,6512024: 3,01214%
- Surgery
- 2023: 2172024: 27125%
- Office and hospital visits
- 2023: 1032024: 1074%
Where Dr. Dennis-Zarate's Medicare services took place, 2024
- In an office3,23295%
- In a facility1585%
Dr. Dennis-Zarate compared with the California median for ophthalmologists, 2024
- Dr. Dennis-Zarate
- California median
- Medicare services
- 3,390vs 1,0793.1 times
- Medicare patients
- 1,175vs 4212.8 times
- Part D claims
- 4,410vs 6187.1 times
Medians across 2,568 ophthalmologists in California with Dmand AI profiles that report each measure.
Dr. Dennis-Zarate's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Dennis-Zarate and other ophthalmologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Kathleen J. Dennis-Zarate treated 1,175 Medicare patients in 2024, average age 77
CMS counts 1,175 Medicare patients who saw Dr. Dennis-Zarate in 2024. The largest group is 75 to 84, with 495 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 53% are also on Medicaid. Their average risk score is 1.40, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Dennis-Zarate's median patient age at 72, with 65% women.
Dr. Dennis-Zarate's Medicare patients by age, 2024
Dr. Dennis-Zarate's Medicare patients by sex, 2024
- Women75464%
- Men42136%
Chronic conditions among Dr. Dennis-Zarate's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis59%
- Diabetes50%
- Ischemic heart disease37%
- Chronic kidney disease28%
- Osteoporosis26%
- Mood disorders23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Dennis-Zarate's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women65%
- Men34%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Kathleen J. Dennis-Zarate wrote 4,558 Medicare Part D claims in 2024
In 2024, Dr. Dennis-Zarate wrote 4,558 Medicare Part D claims for 891 patients. 40% of them were for generic drugs. CMS names the drug for 4,410 of them, across 40 drugs with 11 or more claims each, at $1,055,028 in total drug cost. In 2023, CMS named 4,087 claims across 37 drugs.
Dr. Dennis-Zarate's Part D claims by kind of drug, 2024
- Generic1,818 claims40%
- Brand-name2,740 claims60%
Dr. Dennis-Zarate's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Dennis-Zarate's Part D claims, 2024
- Antibiotics0%20 of 4,558 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 4,0872024: 4,4108%
Drugs named by CMS: 40 in 2024, 37 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Kathleen J. Dennis-Zarate scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Dennis-Zarate for performance year 2024, reported individually. Dr. Dennis-Zarate accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 244 procedures of cataract surgery by Dr. Dennis-Zarate, more than 86% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- MIPS final score, 2024
- 75 of 100
Where Dr. Dennis-Zarate ranks in Medicare procedure volume
- Cataract surgery
- 86th percentile244 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Kathleen J. Dennis-Zarate received $8,208 in industry payments from 2016 to 2025
CMS Open Payments shows 340 general payments to Dr. Dennis-Zarate from 27 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 98% of the total. Alcon Laboratories Inc paid the most, $1,248.
General payments to Dr. Dennis-Zarate by program year, 2016 to 2025
General payments to Dr. Dennis-Zarate by kind, 2016 to 2025
- Food and beverage$8,05898%
- Speaker and faculty fees$1502%
Companies that paid Dr. Dennis-Zarate the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Kathleen J. Dennis-Zarate graduated from Warren Alpert Medical School of Brown University
Dr. Dennis-Zarate graduated from Warren Alpert Medical School of Brown University in 1991.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Kathleen J. Dennis-Zarate's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Kathleen J. Dennis-Zarate
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Kathleen J. Dennis-Zarate's NPI number?
Dr. Kathleen J. Dennis-Zarate's NPI number is 1760450399. It was assigned on March 9, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Kathleen J. Dennis-Zarate?
Dr. Kathleen J. Dennis-Zarate is an ophthalmologist in Glendale, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Kathleen J. Dennis-Zarate practice?
Dr. Dennis-Zarate practices at 222 W Eulalia St, Glendale, CA 91204. Dr. Dennis-Zarate's primary practice is Colorectal Surgery Institute in Glendale, California. Dmand AI also links Dr. Dennis-Zarate to 1 group practice or clinic and 1 medical group.
What is Dr. Kathleen J. Dennis-Zarate's office phone number?
The practice phone on file for Dr. Dennis-Zarate is (818) 244-8161.
What is Dr. Kathleen J. Dennis-Zarate's medical license number?
Dr. Dennis-Zarate holds California license G81715.
Does Dr. Kathleen J. Dennis-Zarate accept Medicare?
Yes. CMS data shows Dr. Dennis-Zarate billed Medicare for 3,390 services in 2024, and Dr. Dennis-Zarate accepts Medicare assignment.
What is Dr. Kathleen J. Dennis-Zarate's MIPS score?
Dr. Dennis-Zarate's MIPS final score for performance year 2024 is 75 out of 100, reported individually.
How many Medicare patients does Dr. Kathleen J. Dennis-Zarate see?
CMS counts 1,175 Medicare patients who saw Dr. Dennis-Zarate in 2024, with an average age of 77.
What services does Dr. Kathleen J. Dennis-Zarate bill to Medicare?
In 2024, Dr. Dennis-Zarate's most billed Medicare services were eye exam or test (92012), eye exam or test (92014) and eye exam or test (92083).
Where did Dr. Kathleen J. Dennis-Zarate go to medical school?
Dr. Dennis-Zarate graduated from Warren Alpert Medical School of Brown University in 1991.
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What drugs does Dr. Kathleen J. Dennis-Zarate prescribe most?
In 2024 Medicare Part D data, Dr. Dennis-Zarate's most prescribed drugs by claims were Latanoprost, Cyclosporine and Restasis.
Has Dr. Kathleen J. Dennis-Zarate received payments from drug or device companies?
CMS Open Payments shows $8,208 in general payments to Dr. Dennis-Zarate from 27 companies from 2016 to 2025. The largest total came from Alcon Laboratories Inc.
How long has Dr. Kathleen J. Dennis-Zarate been practicing?
Dr. Dennis-Zarate graduated from medical school in 1991, 35 years ago.
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