Antineoplastic Agents, PhytogenicAntioxidantsBreast Neoplasms
Dr. Dain P. Zylstra, DO
NPI1538531330
- Part D claims, 2024
- 133
- Publications
- 3
- Industry payments
- $506
- Affiliated sites
- 1
- Medical groups
- 3
- Practice address
- 455 K St, Crescent City, CA 95531-4107
- Practice phone
- Call (707) 464-0860
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
County Of Del Norte
Behavioral health practice · Crescent City, California
Find Dr. Zylstra'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. Dain P. Zylstra is a psychiatrist in San Leandro, California
Dr. Zylstra practices at County Of Del Norte in Crescent City, California.
Dr. Zylstra's NPI, 1538531330, was assigned on October 20, 2015. Dr. Zylstra graduated from WesternU College of Osteopathic Medicine of the Pacific in 2016. Dr. Zylstra holds California license 20A16351.
NPI and contact details
- NPI
- 1538531330NPI Registry (opens in a new tab)
- NPI enumeration date
- October 20, 2015
- NPI status
- Active
- Practice phone
- (707) 464-0860
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Dain P. Zylstra practices in Crescent City and San Leandro
Dr. Zylstra's primary practice is County of Del Norte, at 455 K St, Crescent City, CA 95531-4107. The practice phone is (707) 464-0860. The NPI Registry lists Dr. Zylstra's practice address as 10948 Bigge St, San Leandro, CA 94577.
- County of Del NortePrimary455 K St, Crescent City, CA 95531-4107Phone(707) 464-0860
- NPI Registry address10948 Bigge St, San Leandro, CA 94577 · Alameda CountyPhone(760) 255-5700
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Dain P. Zylstra is affiliated with 1 site of care and 3 medical groups
Dr. Zylstra's primary practice is County Of Del Norte in Crescent City, California. The medical group on file is TridentCare. Dmand AI also links Dr. Zylstra to 2 more medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Dain P. Zylstra's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zylstra practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| County Of Del Norte | Available with a free account |
| +2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Dain P. Zylstra is one of 6,803 psychiatrists in California
Psychiatry is Dr. Zylstra's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Zylstra is board certified in psychiatry by the American Board of Psychiatry and Neurology. Dr. Zylstra is licensed in California.
Specialties and state licenses
- Psychiatry, CaliforniaPrimary
Psychiatrists near Dr. Zylstra
Counts of psychiatrists 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. Dain P. Zylstra's patients have a median age of 34
Across all payers, Dmand AI patient panel data puts Dr. Zylstra's median patient age at 34, with 42% women.
Dr. Zylstra's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 34
Patient panel by sex, all payers
- Women42%
- Men58%
Source: Dmand AI Patient Panel Data
Dr. Dain P. Zylstra wrote 133 Medicare Part D claims in 2024
In 2024, Dr. Zylstra wrote 133 Medicare Part D claims for 22 patients. 95% of them were for generic drugs. CMS names the drug for 17 of them, across 1 drug with 11 or more claims each, at $193 in total drug cost. In 2023, CMS named 24 claims across 2 drugs.
Part D claims, 2024133
Drugs named by CMS1
Total drug cost$193
Part D patients22
Dr. Zylstra's Part D claims by kind of drug, 2024
- Generic126 claims95%
- Brand-name and other7 claims5%
Dr. Zylstra'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 242024: 1729%
Drugs named by CMS: 1 in 2024, 2 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
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Dr. Dain P. Zylstra has 3 publications on record
Dmand AI links 3 papers to Dr. Zylstra, published from 2015 to 2018. The most frequent topics are Breast Neoplasms, Cell Line, Tumor and MCF-7 Cells. Dr. Zylstra's most frequent co-author is Maheswari Senthil, MD.
Papers3
Years published2015 to 2018
Dr. Zylstra's papers by year, 2015 to 2018
Topics Dr. Zylstra writes about most
- Breast Neoplasms
- Cell Line, Tumor
- MCF-7 Cells
Dr. Zylstra's most frequent co-authors
Recent publications by Dr. Zylstra
Chem Res Toxicol
Antineoplastic AgentsApoptosisBreast
See who Dr. Zylstra researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Zylstra works with, so you can find a warm path to the right psychiatrists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Dain P. Zylstra received $506 in industry payments from 2019 to 2025
CMS Open Payments shows 19 general payments to Dr. Zylstra from 4 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 100% of the total. Otsuka America Pharmaceutical, Inc. paid the most, $415.
General payments to Dr. Zylstra by program year, 2019 to 2025
Companies that paid Dr. Zylstra the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Dain P. Zylstra graduated from WesternU College of Osteopathic Medicine of the Pacific
Dr. Zylstra graduated from WesternU College of Osteopathic Medicine of the Pacific in 2016.
- Medical school
- Board certified in psychiatry
Source: Dmand AI Professional Profile Data
Sources for Dr. Dain P. Zylstra'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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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. Dain P. Zylstra
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. Dain P. Zylstra's NPI number?
Dr. Dain P. Zylstra's NPI number is 1538531330. It was assigned on October 20, 2015, and it is active in the NPI Registry.
What kind of doctor is Dr. Dain P. Zylstra?
Dr. Dain P. Zylstra is a psychiatrist in San Leandro, California. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Dain P. Zylstra practice?
Dr. Zylstra practices at 455 K St, Crescent City, CA 95531-4107. Dr. Zylstra also practices at 10948 Bigge St, San Leandro, CA 94577. Dr. Zylstra's primary practice is County Of Del Norte in Crescent City, California. Dmand AI also links Dr. Zylstra to 2 medical groups.
What is Dr. Dain P. Zylstra's office phone number?
The practice phone on file for Dr. Zylstra is (707) 464-0860.
What is Dr. Dain P. Zylstra's medical license number?
Dr. Zylstra holds California license 20A16351.
What medical group is Dr. Dain P. Zylstra part of?
Dr. Zylstra is linked to TridentCare. Dmand AI links Dr. Zylstra to 2 more medical groups.
Is Dr. Dain P. Zylstra board certified?
Yes. Dr. Zylstra is board certified in psychiatry by the American Board of Psychiatry and Neurology.
Where did Dr. Dain P. Zylstra go to medical school?
Dr. Zylstra graduated from WesternU College of Osteopathic Medicine of the Pacific in 2016.
What drugs does Dr. Dain P. Zylstra prescribe most?
In 2024 Medicare Part D data, Dr. Zylstra's most prescribed drugs by claims were Clozapine.
Has Dr. Dain P. Zylstra received payments from drug or device companies?
CMS Open Payments shows $506 in general payments to Dr. Zylstra from 4 companies from 2019 to 2025. The largest total came from Otsuka America Pharmaceutical, Inc.
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How long has Dr. Dain P. Zylstra been practicing?
Dr. Zylstra graduated from medical school in 2016, 10 years ago.
Does Dr. Dain P. Zylstra do research?
Dmand AI links 3 publications to Dr. Zylstra, published from 2015 to 2018.
Who does Dr. Dain P. Zylstra publish with?
Dr. Zylstra's most frequent co-authors are Maheswari Senthil, MD (1 shared paper).
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