Dr. Timothy Andrew Zaki, MD
- Part D claims, 2024
- 20
- Publications
- 2
- Hospital affiliations
- 1
- Industry payments
- $2,703
- State license
- 1
- Practice address
- 14445 Olive View Drive, Sylmar, CA 91342
- Practice phone
- Call (818) 364-1555
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Zaki's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Timothy Andrew Zaki is a gastroenterologist in Sylmar, California
Dr. Zaki practices at Olive View-UCLA Medical Center in Sylmar, California, part of County of Los Angeles.
Dr. Zaki's NPI, 1790312486, was assigned on March 24, 2020. Dr. Zaki graduated from New York University Grossman School of Medicine in 2020. Dr. Zaki holds California license 185201.
- NPI
- 1790312486NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7315403169
- NPI enumeration date
- March 24, 2020
- NPI status
- Active
- Practice phone
- (818) 364-1555
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Timothy Andrew Zaki practices at Olive View-UCLA Medical Center in Sylmar, California
Dr. Zaki's primary practice is Olive View-UCLA Medical Center, at 14445 Olive View Drive, Sylmar, CA 91342 in Los Angeles County. The practice phone is (818) 364-1555.
- Olive View-UCLA Medical Center14445 Olive View Drive, Sylmar, CA 91342 · Los Angeles CountyPhone(818) 364-1555
Source: Dmand AI Affiliation Data
Dr. Timothy Andrew Zaki is affiliated with 1 site of care
Dr. Zaki's primary practice is Olive View-UCLA Medical Center in Sylmar, California, part of County of Los Angeles. Dr. Zaki's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Timothy Andrew Zaki's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zaki practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Olive View-UCLA Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Timothy Andrew Zaki is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Zaki's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Zaki is board certified in internal medicine by the American Board of Internal Medicine. Dr. Zaki is licensed in California.
Specialties and state licenses
- Gastroenterology, CaliforniaPrimary
Gastroenterologists near Dr. Zaki
Counts of gastroenterologists 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. Timothy Andrew Zaki's patients have a median age of 60
Across all payers, Dmand AI patient panel data puts Dr. Zaki's median patient age at 60, with 50% women.
Dr. Zaki's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. Timothy Andrew Zaki wrote 20 Medicare Part D claims in 2024
In 2024, Dr. Zaki wrote 20 Medicare Part D claims. 100% of them were for generic drugs. CMS names the drug for 12 of them, across 1 drug with 11 or more claims each, at $83 in total drug cost.
Dr. Zaki's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
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
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Dr. Timothy Andrew Zaki has 2 publications on record
Dmand AI links 2 papers to Dr. Zaki, published from 2019 to 2021. Dr. Zaki's most frequent co-authors are Shivam Joshi, MD, Michelle McMacken, MD and Amit Singal, MD.
Dr. Zaki's most frequent co-authors
Recent publications by Dr. Zaki
See who Dr. Zaki researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Zaki works with, so you can find a warm path to the right gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Timothy Andrew Zaki received $2,703 in industry payments from 2023 to 2025
CMS Open Payments shows 24 general payments to Dr. Zaki from 11 drug and device companies from 2023 to 2025. Food and beverage make up the largest share, 100% of the total. Gilead Sciences, Inc. paid the most, $754.
General payments to Dr. Zaki by program year, 2023 to 2025
Companies that paid Dr. Zaki the most, 2023 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Timothy Andrew Zaki graduated from New York University Grossman School of Medicine
Dr. Zaki graduated from New York University Grossman School of Medicine in 2020. Dr. Zaki is a member of ACG and AGA.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Sources for Dr. Timothy Andrew Zaki'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Timothy Andrew Zaki
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. Timothy Andrew Zaki's NPI number?
Dr. Timothy Andrew Zaki's NPI number is 1790312486. It was assigned on March 24, 2020, and it is active in the NPI Registry.
What kind of doctor is Dr. Timothy Andrew Zaki?
Dr. Timothy Andrew Zaki is a gastroenterologist in Sylmar, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Timothy Andrew Zaki practice?
Dr. Zaki practices at 14445 Olive View Drive, Sylmar, CA 91342. Dr. Zaki's primary practice is Olive View-UCLA Medical Center in Sylmar, California, part of County of Los Angeles.
What is Dr. Timothy Andrew Zaki's office phone number?
The practice phone on file for Dr. Zaki is (818) 364-1555.
What is Dr. Timothy Andrew Zaki's medical license number?
Dr. Zaki holds California license 185201.
Which hospitals is Dr. Timothy Andrew Zaki affiliated with?
Dr. Zaki practices at Olive View-UCLA Medical Center in Sylmar, California.
Is Dr. Timothy Andrew Zaki board certified?
Yes. Dr. Zaki is board certified in internal medicine by the American Board of Internal Medicine.
Where did Dr. Timothy Andrew Zaki go to medical school?
Dr. Zaki graduated from New York University Grossman School of Medicine in 2020.
What drugs does Dr. Timothy Andrew Zaki prescribe most?
In 2023 Medicare Part D data, Dr. Zaki's most prescribed drugs by claims were Alendronate Sodium.
Has Dr. Timothy Andrew Zaki received payments from drug or device companies?
CMS Open Payments shows $2,703 in general payments to Dr. Zaki from 11 companies from 2023 to 2025. The largest total came from Gilead Sciences, Inc.
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How long has Dr. Timothy Andrew Zaki been practicing?
Dr. Zaki graduated from medical school in 2020, 6 years ago.
Does Dr. Timothy Andrew Zaki do research?
Dmand AI links 2 publications to Dr. Zaki, published from 2019 to 2021.
Who does Dr. Timothy Andrew Zaki publish with?
Dr. Zaki's most frequent co-authors are Shivam Joshi, MD (1 shared paper), Michelle McMacken, MD (1 shared paper) and Amit Singal, MD (1 shared paper).
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