Benjamin August Johnson, M.D.
Internal Medicine Physician · Phoenix, AZ
Benjamin August Johnson, M.D. is an internal medicine physician with a practice address in Phoenix, Arizona, and NPI 1942864913, issued on Apr 25, 2019. Check the license (Arizona 66605, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Benjamin August Johnson
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 66605 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 250 E Dunlap Ave, Phoenix, AZ 85020
- Phone
- (602) 445-0751
- Enumerated
- Apr 25, 2019
- Record last updated
- Jul 25, 2022
- Fax
- (602) 424-8128
- Medicaid ID
- 159050 AZ
- Medicare enrollment
- Enrolled (PECOS I20220805001483); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,853 in Arizona → Look up another NPI →
Also registered at 250 E Dunlap Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Benjamin August Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 66605Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% fewer Medicare Part D claims than the average internal medicine physician in 2024
662 Medicare Part D claims for 220 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 53 claims were for opioids.
Most prescribed
- Oxycodone Hcl42 claims
- Amlodipine Besylate28 claims
- Metoprolol Succinate26 claims
- Lisinopril25 claims
- Prednisone23 claims
- Atorvastatin Calcium21 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
- Affiliated Hospitalists PLCPhoenix, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Benjamin August Johnson among 2,853 internal medicine physician records in Arizona
Benjamin August Johnson, M.D. is one of 2,853 internal medicine physician records with a practice address in Arizona. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 79% of them.
- NPI issued2019 · 79% of these records are older, 19% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2019 · median 2003 among the 1,643 with a school on file
- Record last updated2022 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (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 2,853 in Arizona → Every provider in Phoenix → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Mario Avila, MDPhoenix, AZ 850201740273911
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- John Hortareas, DOPhoenix, AZ 850201376536193
- Amy Lee, MDPhoenix, AZ 850201699760751
- Alfredo Lim, M.D.Phoenix, AZ 850201225002371
- Steven Parker, M.D.Phoenix, AZ 850201841287794
- Christopher Perez, M.D.Phoenix, AZ 850201437144318
- Kevan Pickrel, MDPhoenix, AZ 850201568455384
Common questions
What is Benjamin August Johnson, M.D.'s NPI number?
Benjamin August Johnson, M.D.'s National Provider Identifier (NPI) is 1942864913, issued on Apr 25, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Benjamin August Johnson, M.D. located?
The NPPES record lists a practice address at 250 E Dunlap Ave, Phoenix, AZ, 85020. Phone: (602) 445-0751. Providers update this record themselves, so call before visiting.
How can I verify Benjamin August Johnson, M.D.'s license?
NPPES lists Arizona license number 66605, 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 Benjamin August Johnson, M.D. prescribe under Medicare Part D?
In 2024, Benjamin August Johnson, M.D. had 662 Medicare Part D claims for 220 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.