Dr. Zachary Alexander Warren, MD
- Part D claims, 2024
- 80
- Hospital affiliations
- 2
- Industry payments
- $2,836
- Medical group
- 1
- State licenses
- 2
- Practice address
- 5601 De Soto Avenue, Woodland Hills, CA 91367
- Practice phone
- Call (818) 719-3800
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Warren'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. Zachary Alexander Warren is an otolaryngic allergy physician in Woodland Hills, California
Dr. Warren practices at Kaiser Permanente Woodland Hills Medical Center in Woodland Hills, California, part of Kaiser Permanente.
Dr. Warren's NPI, 1669933222, was assigned on March 27, 2019. Dr. Warren holds Georgia license 100647.
- NPI
- 1669933222NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2860938636
- NPI enumeration date
- March 27, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (818) 719-3800
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Zachary Alexander Warren practices at Kaiser Permanente Woodland Hills Medical Center in Woodland Hills, California
Dr. Warren's primary practice is Kaiser Permanente Woodland Hills Medical Center, at 5601 De Soto Avenue, Woodland Hills, CA 91367 in Los Angeles County. The practice phone is (818) 719-3800.
- Kaiser Permanente Woodland Hills Medical Center5601 De Soto Avenue, Woodland Hills, CA 91367 · Los Angeles CountyPhone(818) 719-3800
Source: Dmand AI Affiliation Data
Dr. Zachary Alexander Warren is affiliated with 3 sites of care and 1 medical group
Dr. Warren's primary practice is Kaiser Permanente Woodland Hills Medical Center in Woodland Hills, California, part of Kaiser Permanente. Dr. Warren is also affiliated with University of Chicago Medical Center. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Warren to 1 more dialysis center, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Zachary Alexander Warren's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Warren practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente Woodland Hills Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Zachary Alexander Warren is one of 11 otolaryngic allergy physicians in California
Otolaryngic allergy is Dr. Warren's primary specialty in the NPI Registry, under taxonomy code 207YX0602X. Dmand AI has Dr. Warren's licenses on file in 2 states: Georgia and Illinois.
Specialties and state licenses
- Otolaryngic allergy, GeorgiaPrimary
- Illinois license
Otolaryngic allergy physicians near Dr. Warren
Counts of otolaryngic allergy physicians 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. Zachary Alexander Warren's patients have a median age of 56
Across all payers, Dmand AI patient panel data puts Dr. Warren's median patient age at 56, with 53% women.
Dr. Warren's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 56
Patient panel by sex, all payers
- Women53%
- Men46%
Source: Dmand AI Patient Panel Data
Dr. Zachary Alexander Warren wrote 80 Medicare Part D claims in 2024
In 2024, Dr. Warren wrote 80 Medicare Part D claims for 50 patients. 100% of them were for generic drugs. CMS names the drug for 28 of them, across 2 drugs with 11 or more claims each, at $44 in total drug cost. In 2023, CMS named 37 claims across 3 drugs.
Dr. Warren'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. Warren's Part D claims, 2024
- Opioids36%29 of 80 claims
- Antibiotics26%21 of 80 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: 372024: 2824%
Drugs named by CMS: 2 in 2024, 3 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
How Dr. Zachary Alexander Warren takes part in Medicare
Dr. Warren accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Zachary Alexander Warren received $2,836 in industry payments from 2020 to 2024
CMS Open Payments shows 21 general payments to Dr. Warren from 5 drug and device companies from 2020 to 2024. Travel and lodging make up the largest share, 74% of the total. Stryker Corporation paid the most, $2,499.
General payments to Dr. Warren by program year, 2020 to 2024
General payments to Dr. Warren by kind, 2020 to 2024
- Travel and lodging$2,10274%
- Food and beverage$60721%
- Education$1274%
Companies that paid Dr. Warren the most, 2020 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Zachary Alexander Warren'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Zachary Alexander Warren
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. Zachary Alexander Warren's NPI number?
Dr. Zachary Alexander Warren's NPI number is 1669933222. It was assigned on March 27, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Zachary Alexander Warren?
Dr. Zachary Alexander Warren is an otolaryngic allergy physician in Woodland Hills, California. The primary specialty in the NPI Registry is Otolaryngic Allergy Physician (taxonomy code 207YX0602X).
Where does Dr. Zachary Alexander Warren practice?
Dr. Warren practices at 5601 De Soto Avenue, Woodland Hills, CA 91367. Dr. Warren's primary practice is Kaiser Permanente Woodland Hills Medical Center in Woodland Hills, California, part of Kaiser Permanente. Dmand AI also links Dr. Warren to 1 dialysis center.
What is Dr. Zachary Alexander Warren's office phone number?
The practice phone on file for Dr. Warren is (818) 719-3800.
What is Dr. Zachary Alexander Warren's medical license number?
Dr. Warren holds Georgia license 100647, one of the licenses on file in 2 states.
Which states has Dr. Zachary Alexander Warren been licensed in?
Dmand AI has state licenses on file for Dr. Warren in Georgia and Illinois.
Which hospitals is Dr. Zachary Alexander Warren affiliated with?
Dr. Warren practices at Kaiser Permanente Woodland Hills Medical Center in Woodland Hills, California. Dr. Warren is also affiliated with University of Chicago Medical Center.
What medical group is Dr. Zachary Alexander Warren part of?
Dr. Warren is linked to Southern California Permanente Medical Group.
Does Dr. Zachary Alexander Warren accept Medicare?
Yes. CMS lists Dr. Warren as accepting Medicare assignment.
What drugs does Dr. Zachary Alexander Warren prescribe most?
In 2024 Medicare Part D data, Dr. Warren's most prescribed drugs by claims were Tramadol HCl and Hydrocodone-Acetaminophen.
Has Dr. Zachary Alexander Warren received payments from drug or device companies?
CMS Open Payments shows $2,836 in general payments to Dr. Warren from 5 companies from 2020 to 2024. The largest total came from Stryker Corporation.
How long has Dr. Zachary Alexander Warren been practicing?
Dr. Warren graduated from medical school in 2019, 7 years ago.
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