Dr. Gillian Austin Dorner, MD
- Part D claims, 2024
- 404
- MIPS score, 2024
- 86
- Hospital affiliations
- 1
- Industry payments
- $145
- Medical groups
- 3
- Practice address
- 300 Hillmont Avenue, Ventura, CA 93003
- Practice phone
- Call (805) 652-6075
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Dorner'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. Gillian Austin Dorner is a general practice physician in Ventura, California
Dr. Dorner practices at Ventura County Medical Center in Ventura, California, part of Ventura County Health Care Agency.
Dr. Dorner's NPI, 1508082157, was assigned on April 18, 2007. Dr. Dorner graduated from Carver College of Medicine in 2004. Dr. Dorner holds California license A95216.
- NPI
- 1508082157NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7517018930
- NPI enumeration date
- April 18, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (805) 652-6075
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gillian Austin Dorner practices at Ventura County Medical Center in Ventura, California
Dr. Dorner's primary practice is Ventura County Medical Center, at 300 Hillmont Avenue, Ventura, CA 93003 in Ventura County. The practice phone is (805) 652-6075.
- Ventura County Medical Center300 Hillmont Avenue, Ventura, CA 93003 · Ventura CountyPhone(805) 652-6075
Source: Dmand AI Affiliation Data
Dr. Gillian Austin Dorner is affiliated with 5 sites of care and 3 medical groups
Dr. Dorner's primary practice is Ventura County Medical Center in Ventura, California, part of Ventura County Health Care Agency. The medical group on file is Ventura County Medical Center. Dmand AI also links Dr. Dorner to 3 more group practices and clinics, 2 medical groups and 1 therapy and rehab clinic, each named with a free account. Dr. Dorner'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. Gillian Austin Dorner's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Dorner practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ventura County Medical Center | Available with a free account |
| +4 more sites and 2 medical groups | 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 Ventura County Health Care Agency and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Gillian Austin Dorner is one of 1,526 general practice physicians in California
General practice is Dr. Dorner's primary specialty in the NPI Registry, under taxonomy code 208D00000X. Dr. Dorner is board certified in family medicine by the American Board of Family Medicine. Dr. Dorner is licensed in California.
Specialties and state licenses
- General practice, CaliforniaPrimary
Clinical focus
Dmand AI lists chronic diabetes among the conditions Dr. Dorner treats.
General practice physicians near Dr. Dorner
Counts of general practice 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. Gillian Austin Dorner's patients have a median age of 35
Across all payers, Dmand AI patient panel data puts Dr. Dorner's median patient age at 35, with 93% women.
Dr. Dorner's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 35
Patient panel by sex, all payers
- Women93%
- Men7%
Source: Dmand AI Patient Panel Data
Dr. Gillian Austin Dorner wrote 404 Medicare Part D claims in 2024
In 2024, Dr. Dorner wrote 404 Medicare Part D claims for 24 patients. 90% of them were for generic drugs. CMS names the drug for 178 of them, across 11 drugs with 11 or more claims each, at $1,445 in total drug cost. In 2023, CMS named 182 claims across 12 drugs.
Dr. Dorner's Part D claims by kind of drug, 2024
- Generic364 claims90%
- Brand-name and other40 claims10%
Dr. Dorner'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. Dorner's Part D claims, 2024
- Opioids8%34 of 404 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: 1822024: 1782%
Drugs named by CMS: 11 in 2024, 12 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
Dr. Gillian Austin Dorner scored 86 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 86 out of 100 for Dr. Dorner for performance year 2024, reported as part of a group. Dr. Dorner accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Dorner's MIPS scores, performance year 2024
- 86of 100Final score
- 64.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 72of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Gillian Austin Dorner received $145 in industry payments from 2016 to 2018
CMS Open Payments shows 4 general payments to Dr. Dorner from 2 drug and device companies from 2016 to 2018. Food and beverage make up the largest share, 100% of the total. Bausch Health Americas, Inc. paid the most, $100.
General payments to Dr. Dorner by program year, 2016 to 2018
Companies that paid Dr. Dorner the most, 2016 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gillian Austin Dorner graduated from Carver College of Medicine
Dr. Dorner graduated from Carver College of Medicine in 2004.
- Medical school
- Board certified in family medicine
Source: Dmand AI Professional Profile Data
Dr. Gillian Austin Dorner accepts plans from 16 insurance carriers
Dr. Dorner is in network with 16 carriers, including Elevance, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Aetna
- Alliant Health Plans
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- +8 more carriersWith a free account
Plan types Dr. Dorner accepts, by number of carriers
- PPO10
- HMO7
- Medicare7
- POS5
- EPO3
Source: Dmand AI Insurance Network Data
Sources for Dr. Gillian Austin Dorner'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)Clinician Public Reporting: Overall MIPS Performance (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. Gillian Austin Dorner
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. Gillian Austin Dorner's NPI number?
Dr. Gillian Austin Dorner's NPI number is 1508082157. It was assigned on April 18, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Gillian Austin Dorner?
Dr. Gillian Austin Dorner is a general practice physician in Ventura, California. The primary specialty in the NPI Registry is General Practice Physician (taxonomy code 208D00000X).
Where does Dr. Gillian Austin Dorner practice?
Dr. Dorner practices at 300 Hillmont Avenue, Ventura, CA 93003. Dr. Dorner's primary practice is Ventura County Medical Center in Ventura, California, part of Ventura County Health Care Agency. Dmand AI also links Dr. Dorner to 3 group practices and clinics, 2 medical groups and 1 therapy and rehab clinic.
What is Dr. Gillian Austin Dorner's office phone number?
The practice phone on file for Dr. Dorner is (805) 652-6075.
What is Dr. Gillian Austin Dorner's medical license number?
Dr. Dorner holds California license A95216.
Which hospitals is Dr. Gillian Austin Dorner affiliated with?
Dr. Dorner practices at Ventura County Medical Center in Ventura, California.
What medical group is Dr. Gillian Austin Dorner part of?
Dr. Dorner is linked to Ventura County Medical Center. Dmand AI links Dr. Dorner to 2 more medical groups.
Does Dr. Gillian Austin Dorner accept Medicare?
Yes. CMS lists Dr. Dorner as accepting Medicare assignment.
What is Dr. Gillian Austin Dorner's MIPS score?
Dr. Dorner's MIPS final score for performance year 2024 is 86 out of 100, reported as part of a group.
Is Dr. Gillian Austin Dorner board certified?
Yes. Dr. Dorner is board certified in family medicine by the American Board of Family Medicine.
Show 5 more questionsShow fewer questions
Where did Dr. Gillian Austin Dorner go to medical school?
Dr. Dorner graduated from Carver College of Medicine in 2004.
What drugs does Dr. Gillian Austin Dorner prescribe most?
In 2024 Medicare Part D data, Dr. Dorner's most prescribed drugs by claims were Levothyroxine Sodium, Atorvastatin Calcium and Hydrocodone-Acetaminophen.
Has Dr. Gillian Austin Dorner received payments from drug or device companies?
CMS Open Payments shows $145 in general payments to Dr. Dorner from 2 companies from 2016 to 2018. The largest total came from Bausch Health Americas, Inc.
How long has Dr. Gillian Austin Dorner been practicing?
Dr. Dorner graduated from medical school in 2004, 22 years ago.
What insurance does Dr. Gillian Austin Dorner accept?
Dr. Dorner is in network with 16 carriers, including Elevance, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
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