Barbara A. Backer, M.D.
Internal Medicine Physician · Phoenix, AZ
Barbara A. Backer, M.D. is an internal medicine physician with a practice address in Phoenix, Arizona, and NPI 1134171374, issued on May 16, 2006. Check the license (Arizona 37318, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Barbara A. Backer
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 37318 AZ
47473 MN
Self-reported in NPPES; status is on the state search - Practice location
- 4400 N 32ND St, Phoenix, AZ 85018
- Phone
- (602) 254-4424
- Enumerated
- May 16, 2006
- Record last updated
- Feb 1, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (602) 254-6036
- Medicare enrollment
- Enrolled (PECOS I20071218000143); accepts Medicare assignment
- Medical or professional school
- Vanderbilt University School Of Medicine, 2001
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 4400 N 32ND St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Adrian Arya, MDSpecialist1477522340
- Bruce Bethancourt, M.D.Internal Medicine Physician1548252513
- Ann Bullington, MDOphthalmology Physician1225023369
- Robert Bullington, MDOphthalmology Physician1134114275
- Samuel Clark, MDFamily Medicine Physician1073506036
- James Corcoran, DOFamily Medicine Physician1730128091
Verify Barbara A. Backer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 37318Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% more Medicare Part D claims than the average internal medicine physician in 2024
5,045 Medicare Part D claims for 382 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 265 claims were for opioids.
Most prescribed
- Levothyroxine Sodium245 claims
- Atorvastatin Calcium191 claims
- Amlodipine Besylate121 claims
- Ozempic119 claims
- Rosuvastatin Calcium107 claims
- Lisinopril98 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.
Bills Medicare through one group practice
- Honorhealth Medical Group, LLCPhoenix, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
695 internal medicine physician records list a practice address in Phoenix
They are 695 of the 31,399 NPPES records with a practice address in Phoenix, and 2,853 internal medicine physician records in Arizona.
All 695 in Phoenix → All 2,853 in Arizona → Every provider in Phoenix →
Other internal medicine physician records in Arizona
- Daniel Aaronson, MDTucson, AZ1134865355
- Constantia Abarikwu, MDPhoenix, AZ1497832620
- Jaber Abawi, MDPayson, AZ1629038542
- Demsas Abay, MDPeoria, AZ1720312390
- Firas Abbas, M.D. M.P.H.Mesa, AZ1336481407
- Hassan Abbas, D.O.Mesa, AZ1477294775
- Jalal Abbas, M.D.Sun City West, AZ1205895034
- Tayeb Abbas, MDSun City West, AZ1093406795
- Hamed Abbaszadegan, MDPhoenix, AZ1407083579
- Kristopher Abbate, MDTucson, AZ1184112401
Common questions
What is Barbara A. Backer, M.D.'s NPI number?
Barbara A. Backer, M.D.'s National Provider Identifier (NPI) is 1134171374, issued on May 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Barbara A. Backer, M.D. located?
The NPPES record lists a practice address at 4400 N 32ND St, Phoenix, AZ, 85018. Phone: (602) 254-4424. Providers update this record themselves, so call before visiting.
How can I verify Barbara A. Backer, M.D.'s license?
NPPES lists Arizona license number 37318, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Barbara A. Backer, M.D. prescribe under Medicare Part D?
In 2024, Barbara A. Backer, M.D. had 5,045 Medicare Part D claims for 382 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.