Dain Zylstra, DO
Psychiatry Physician · Barstow, CA
Dain Zylstra, DO is a psychiatry physician with a practice address in Barstow, California, and NPI 1538531330, issued on Oct 20, 2015. Check the license (California 20A16351, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Dain Zylstra
- Credential
- DO
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 20A16351 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1841 E Main St, Barstow, CA 92311
- Phone
- (760) 255-5700
- Enumerated
- Oct 20, 2015
- Record last updated
- Aug 10, 2020 (not updated in 6 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 1841 E Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lynda AndersonMarriage & Family Therapist1538719406
- Penny Carroll, CADC II ,ICADCAddiction (Substance Use Disorder) Counselor1780993857
- Carlos CastilloCase Manager/Care Coordinator1821751934
- Michael Ann Cline, CADC LL -CAAddiction (Substance Use Disorder) Counselor1316237720
- Samantha Culhane, LCSWClinical Social Worker1710458054
- Cindy DiazMarriage & Family Therapist1619701091
Verify Dain Zylstra in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A16351Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average psychiatry physician in 2024
133 Medicare Part D claims for 22 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Clozapine17 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $41.54
2 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Pharmaceuticals, Inc. The 13,693 providers of this specialty with any payment received $4,954.93 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Dain Zylstra among 8,673 psychiatry physician records in California
Dain Zylstra, DO is one of 8,673 psychiatry physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 74% of them.
- NPI issued2015 · 74% of these records are older, 23% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2020 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in California
There are 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Barstow → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Anthony Shin, M.D.Grand Terrace, CA 923131982628756
- Trevinder Ahluwalia, MDApple Valley, CA 923071164530440
- Ronald Blustein, M.D.Big Bear Lake, CA 923151023129335
- Kyle Brown, D.O.Apple Valley, CA 923071275073017
- Anish Dube, M.D., M.P.H, M.L.S.Apple Valley, CA 923071962714618
- Harry Goldwasser, MDBig Bear Lake, CA 923151255370680
- Arif Husain, MDApple Valley, CA 923071043276918
- Kevork Iskenderian, M.D.Apple Valley, CA 923071932112455
Common questions
What is Dain Zylstra, DO's NPI number?
Dain Zylstra, DO's National Provider Identifier (NPI) is 1538531330, issued on Oct 20, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Dain Zylstra, DO located?
The NPPES record lists a practice address at 1841 E Main St, Barstow, CA, 92311. Phone: (760) 255-5700. Providers update this record themselves, so call before visiting.
How can I verify Dain Zylstra, DO's license?
NPPES lists California license number 20A16351, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Dain Zylstra, DO prescribe under Medicare Part D?
In 2024, Dain Zylstra, DO had 133 Medicare Part D claims for 22 beneficiaries; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.