Ann Intern Med
CaliforniaDelivery of Health Care, IntegratedPatient Satisfaction
Dr. Irwin Robins Barr, MD
NPI1659450799
- Part D claims, 2017
- 85
- Publications
- 2
- State licenses
- 5
- Year NPI issued
- 2006
- Practice address
- 1550 Gateway Blvd, Fairfield, CA 94533-6901
- Practice phone
- Call (707) 427-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Barr's professional email, personal email and mobile number
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Dr. Irwin Robins Barr is an internist in Fairfield, California
Dr. Barr practices in Fairfield, California.
Dr. Barr's NPI, 1659450799, was assigned on November 2, 2006. Dr. Barr graduated from University Of Minnesota Medical School in 1979. Dr. Barr's California license number on file is G69947.
NPI and contact details
- NPI
- 1659450799NPI Registry (opens in a new tab)
- NPI enumeration date
- November 2, 2006
- NPI status
- Active
- Practice phone
- (707) 427-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1979
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Irwin Robins Barr's practice address is in Fairfield, California
Dr. Barr's practice address in the NPI Registry is 1550 Gateway Blvd, Fairfield, CA 94533-6901. The practice phone is (707) 427-4000.
- NPI Registry address1550 Gateway Blvd, Fairfield, CA 94533-6901Phone(707) 427-4000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Irwin Robins Barr's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Barr practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Barr's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Irwin Robins Barr is one of 16,751 internists in California
Internal medicine is Dr. Barr's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Barr is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Barr's licenses on file in 5 states: California, Utah, Arizona, Iowa and Minnesota.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- Utah license
- Arizona license
- Iowa license
- Minnesota license
Internists near Dr. Barr
Counts of internists 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. Irwin Robins Barr's patients have a median age of 30
Across all payers, Dmand AI patient panel data puts Dr. Barr's median patient age at 30, with 0% women.
Dr. Barr's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 30
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
Dr. Irwin Robins Barr wrote 85 Medicare Part D claims in 2017
In 2017, Dr. Barr wrote 85 Medicare Part D claims. They cover 4 drugs, with $1,340 in total drug cost.
Part D claims, 201785
Drugs named by CMS4
Total drug cost$1,340
Dr. Barr's most prescribed drugs by claims, 2017
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Irwin Robins Barr has 2 publications on record
Dmand AI links 2 papers to Dr. Barr in 2019. The most frequent topics are Delivery of Health Care, Integrated, Patient Satisfaction and Telemedicine. Dr. Barr's most frequent co-authors are Rahul Atul Parikh, MD, PhD and Rahul K. Parikh, MD.
Papers2
Topics Dr. Barr writes about most
- Delivery of Health Care, Integrated
- Patient Satisfaction
- Telemedicine
Dr. Barr's most frequent co-authors
Recent publications by Dr. Barr
N Engl J Med
After-Hours CareAmbulatory Care FacilitiesDelivery of Health Care, Integrated
See who Dr. Barr researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Barr works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Irwin Robins Barr graduated from University Of Minnesota Medical School
Dr. Barr graduated from University Of Minnesota Medical School in 1979.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Sources for Dr. Irwin Robins Barr'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 |
| 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Irwin Robins Barr
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. Irwin Robins Barr's NPI number?
Dr. Irwin Robins Barr's NPI number is 1659450799. It was assigned on November 2, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Irwin Robins Barr?
Dr. Irwin Robins Barr is an internist in Fairfield, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Irwin Robins Barr practice?
Dr. Barr practices at 1550 Gateway Blvd, Fairfield, CA 94533-6901.
What is Dr. Irwin Robins Barr's office phone number?
The practice phone on file for Dr. Barr is (707) 427-4000.
What is Dr. Irwin Robins Barr's medical license number?
Dr. Barr's California license number on file is G69947, one of the licenses on file in 5 states.
Which states has Dr. Irwin Robins Barr been licensed in?
Dmand AI has state licenses on file for Dr. Barr in California (1990 to 2025), Utah (1987 to 1990), Arizona (1984 to 1988), Iowa (1983 to 1984) and Minnesota (1982 to 1983).
Is Dr. Irwin Robins Barr board certified?
Yes. Dr. Barr is board certified in internal medicine by the American Board of Internal Medicine.
Where did Dr. Irwin Robins Barr go to medical school?
Dr. Barr graduated from University Of Minnesota Medical School in 1979.
What drugs does Dr. Irwin Robins Barr prescribe most?
In 2017 Medicare Part D data, Dr. Barr's most prescribed drugs by claims were Hydrocodone-Acetaminophen, Cephalexin and Oxycodone-Acetaminophen.
How long has Dr. Irwin Robins Barr been practicing?
Dr. Barr graduated from medical school in 1979, 47 years ago.
Does Dr. Irwin Robins Barr do research?
Dmand AI links 2 publications to Dr. Barr.
Who does Dr. Irwin Robins Barr publish with?
Dr. Barr's most frequent co-authors are Rahul Atul Parikh, MD, PhD (2 shared papers) and Rahul K. Parikh, MD (1 shared paper).
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