Dr. Jeffery John Zielinski, MD
- Part D claims, 2020
- 23
- Industry payments
- $64
- Medical groups
- 2
- Insurance carriers
- 2
- State license
- 1
- Practice address
- 2888 E Cochran St, Simi Valley, CA 93065
- Practice phone
- Call (323) 343-3342
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Medical group
Find Dr. Zielinski's professional email, personal email and mobile number
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Dr. Jeffery John Zielinski is an emergency medicine physician in Simi Valley, California
Dr. Zielinski practices with MemorialCare Medical Group, a medical group.
Dr. Zielinski's NPI, 1326273244, was assigned on May 20, 2009. Dr. Zielinski graduated from University of Wisconsin-Madison in 1984. Dr. Zielinski holds California license G59479.
- NPI
- 1326273244NPI Registry (opens in a new tab)
- NPI enumeration date
- May 20, 2009
- NPI status
- Active
- Practice phone
- (323) 343-3342
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Jeffery John Zielinski's practice address is in Simi Valley, California
Dr. Zielinski's practice address in the NPI Registry is 2888 E Cochran St, Simi Valley, CA 93065, in Ventura County. The practice phone is (323) 343-3342.
- NPI Registry address2888 E Cochran St, Simi Valley, CA 93065 · Ventura CountyPhone(323) 343-3342
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Jeffery John Zielinski is affiliated with 2 medical groups
Dr. Zielinski is part of MemorialCare Medical Group, a medical group in Fountain Valley, California. The medical group on file is Innercare.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Jeffery John Zielinski's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zielinski practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| MemorialCare Medical Group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across MemorialCare Medical Group and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Jeffery John Zielinski is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Zielinski's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Zielinski is licensed in California.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
Emergency medicine physicians near Dr. Zielinski
Counts of emergency medicine 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. Jeffery John Zielinski wrote 23 Medicare Part D claims in 2020
In 2020, Dr. Zielinski wrote 23 Medicare Part D claims. They cover 2 drugs, with $5,981 in total drug cost. In 2019, CMS named 105 claims across 6 drugs.
Dr. Zielinski's most prescribed drugs by claims, 2020
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, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 1052020: 2378%
Drugs named by CMS: 2 in 2020, 6 in 2019.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Jeffery John Zielinski received $64 in industry payments in 2017
CMS Open Payments shows 1 general payment to Dr. Zielinski from 1 drug or device company in 2017. Food and beverage make up the largest share, 100% of the total. Boston Scientific Corporation paid the most, $64.
Companies that paid Dr. Zielinski the most, 2017 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jeffery John Zielinski graduated from University of Wisconsin-Madison
Dr. Zielinski graduated from University of Wisconsin-Madison in 1984.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Jeffery John Zielinski accepts plans from 2 insurance carriers
Dr. Zielinski is in network with 2 carriers, including United Healthcare and DentaQuest. HMO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- United Healthcare
- DentaQuest
Plan types Dr. Zielinski accepts, by number of carriers
- HMO1
- Medicare1
- POS1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Jeffery John Zielinski'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 | Dmand AI Affiliation Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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 |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Jeffery John Zielinski
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. Jeffery John Zielinski's NPI number?
Dr. Jeffery John Zielinski's NPI number is 1326273244. It was assigned on May 20, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Jeffery John Zielinski?
Dr. Jeffery John Zielinski is an emergency medicine physician in Simi Valley, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Jeffery John Zielinski practice?
Dr. Zielinski practices at 2888 E Cochran St, Simi Valley, CA 93065. Dr. Zielinski's primary practice is MemorialCare Medical Group, a medical group.
What is Dr. Jeffery John Zielinski's office phone number?
The practice phone on file for Dr. Zielinski is (323) 343-3342.
What is Dr. Jeffery John Zielinski's medical license number?
Dr. Zielinski holds California license G59479.
What medical group is Dr. Jeffery John Zielinski part of?
Dr. Zielinski is part of MemorialCare Medical Group in Fountain Valley, California. Dr. Zielinski is also linked to Innercare. Dmand AI links Dr. Zielinski to 2 medical groups in all.
Where did Dr. Jeffery John Zielinski go to medical school?
Dr. Zielinski graduated from University of Wisconsin-Madison in 1984.
What drugs does Dr. Jeffery John Zielinski prescribe most?
In 2020 Medicare Part D data, Dr. Zielinski's most prescribed drugs by claims were Tradjenta and Amoxicillin-Clavulanate Potass.
Has Dr. Jeffery John Zielinski received payments from drug or device companies?
CMS Open Payments shows $64 in general payments to Dr. Zielinski from 1 company from 2017 to 2017. The largest total came from Boston Scientific Corporation.
How long has Dr. Jeffery John Zielinski been practicing?
Dr. Zielinski graduated from medical school in 1984, 42 years ago.
What insurance does Dr. Jeffery John Zielinski accept?
Dr. Zielinski is in network with 2 carriers, including United Healthcare and DentaQuest. HMO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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