Irwin Robins Barr, MD
Internal Medicine Physician · Fairfield, CA
Irwin Robins Barr, MD is an internal medicine physician with a practice address in Fairfield, California, and NPI 1659450799, issued on Nov 2, 2006. Check the license (California G69947, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Irwin Robins Barr
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G69947 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1550 Gateway Blvd, Fairfield, CA 94533
- Phone
- (707) 427-4000
- Enumerated
- Nov 2, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 00G699470 CA
- Entity
- Type 1 · individual
Also registered at 1550 Gateway Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Marissa Bartlett, MDPediatrics Physician1659443489
- Jaime Betters, R.D.Registered Dietitian1861559460
- Douglas Brozell, MDFamily Medicine Physician1871645002
Verify Irwin Robins Barr in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G69947Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
54 internal medicine physician records list a practice address in Fairfield
They are 54 of the 3,595 NPPES records with a practice address in Fairfield, and 17,696 internal medicine physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 54 in Fairfield → All 17,696 in California → Every provider in Fairfield →
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Common questions
What is Irwin Robins Barr, MD's NPI number?
Irwin Robins Barr, MD's National Provider Identifier (NPI) is 1659450799, issued on Nov 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Irwin Robins Barr, MD located?
The NPPES record lists a practice address at 1550 Gateway Blvd, Fairfield, CA, 94533. Phone: (707) 427-4000. Providers update this record themselves, so call before visiting.
How can I verify Irwin Robins Barr, MD's license?
NPPES lists California license number G69947, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.