Timothy S. Johnson, M.D.
Internal Medicine Physician · Tucson, AZ
Timothy S. Johnson, M.D. is an internal medicine physician with a practice address in Tucson, Arizona, and NPI 1528222593, issued on Jul 17, 2008. Check the license (Arizona 45028, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Timothy S. Johnson
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 45028 AZ
R70572 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 2424 N Wyatt Dr, Tucson, AZ 85712
- Phone
- (520) 324-8621
- Enumerated
- Jul 17, 2008
- Record last updated
- Jun 26, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (520) 324-3935
- Medicaid ID
- 673142 AZ
- Medicare enrollment
- Enrolled (PECOS I20120228000358); accepts Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 2008
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,853 in Arizona → Look up another NPI →
Also registered at 2424 N Wyatt Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Timothy S. Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 45028Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average internal medicine physician in 2024
481 Medicare Part D claims for 210 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 18 claims were for opioids.
Most prescribed
- Furosemide29 claims
- Atorvastatin Calcium27 claims
- Metoprolol Tartrate25 claims
- Albuterol Sulfate Hfa19 claims
- Metoprolol Succinate18 claims
- Pantoprazole Sodium18 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
- Arizona Inpatient Medicine Associates LLCTucson, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Timothy S. Johnson among 2,853 internal medicine physician records in Arizona
Timothy S. 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 2008, is newer than 53% of them.
- NPI issued2008 · 53% of these records are older, 43% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2008 · median 2003 among the 1,643 with a school on file
- Record last updated2019 · 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).
651 internal medicine physician records list a practice address in Tucson
They are 651 of the 18,788 NPPES records with a practice address in Tucson, and 2,853 internal medicine physician records in Arizona.
All 2,853 in Arizona → Every provider in Tucson → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- William Abraham, MDTucson, AZ 857121669468195
- Sheela Bhat, M.D.Tucson, AZ 857121598752008
- Muralikrishna Bhat, M.D.Tucson, AZ 857121114914637
- Douglas Bischoff, M.D.Tucson, AZ 857121821085333
- George Haloftis, D.O.Tucson, AZ 857121740277268
- Thomas Headlee, M.D.Tucson, AZ 857121194711630
- Kathleen Iveson, M.D.Tucson, AZ 857121720074263
- Gerome Kantor, MDTucson, AZ 857121407850290
Common questions
What is Timothy S. Johnson, M.D.'s NPI number?
Timothy S. Johnson, M.D.'s National Provider Identifier (NPI) is 1528222593, issued on Jul 17, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Timothy S. Johnson, M.D. located?
The NPPES record lists a practice address at 2424 N Wyatt Dr, Tucson, AZ, 85712. Phone: (520) 324-8621. Providers update this record themselves, so call before visiting.
How can I verify Timothy S. Johnson, M.D.'s license?
NPPES lists Arizona license number 45028, 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 Timothy S. Johnson, M.D. prescribe under Medicare Part D?
In 2024, Timothy S. Johnson, M.D. had 481 Medicare Part D claims for 210 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.