James B. Klein, MD
Colon & Rectal Surgery Physician · Tucson, AZ
James B. Klein, MD is a colon & rectal surgery physician with a practice address in Tucson, Arizona, and NPI 1194747691, issued on Jul 24, 2006. Check the license (Arizona 5352, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- James B. Klein
- Credential
- MD
- Primary taxonomy
- Colon & Rectal Surgery Physician 208C00000X
- License number
- 5352 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 1601 N Tucson Blvd, Tucson, AZ 85716
- Phone
- (520) 795-9484
- Enumerated
- Jul 24, 2006
- Record last updated
- Mar 8, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 21753001 AZ
- Entity
- Type 1 · individual
8 nearest colon & rectal surgery physician records → All 60 in Arizona → Look up another NPI →
Also registered at 1601 N Tucson Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify James B. Klein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 5352Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average colon & rectal surgery physician in 2024
43 Medicare Part D claims, against an average of 192 among the 1,836 providers of this specialty who prescribed in Part D.
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.
James B. Klein among 60 colon & rectal surgery physician records in Arizona
James B. Klein, MD is one of 60 colon & rectal surgery physician records with a practice address in Arizona. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 20% of them.
- NPI issued2006 · 20% of these records are older, 58% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 75% of these records are
- Record last updated2021 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208C00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Colon & Rectal Surgery Physician providers in Arizona
There are 60 colon & rectal surgery physician records in Arizona.
All 60 in Arizona → Every provider in Tucson → Colon & Rectal Surgery Physician nationwide →
The 8 colon & rectal surgery physician records with the nearest ZIP codes
- Terrance Adkins, M.D.Tucson, AZ 857121669400677
- Cybil Corning, MDTucson, AZ 857121235337304
- Stefanie Schluender, MDTucson, AZ 857121871667147
- Susan Parker, MDTucson, AZ 857241851300594
- Philip RosenTucson, AZ 857241437595642
- Jessica StephensTucson, AZ 857411417375023
- Gabie Ong, MDSurprise, AZ 853741225470479
- Sushil Pandey, MDSurprise, AZ 853741568788099
Common questions
What is James B. Klein, MD's NPI number?
James B. Klein, MD's National Provider Identifier (NPI) is 1194747691, issued on Jul 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James B. Klein, MD located?
The NPPES record lists a practice address at 1601 N Tucson Blvd, Tucson, AZ, 85716. Phone: (520) 795-9484. Providers update this record themselves, so call before visiting.
How can I verify James B. Klein, MD's license?
NPPES lists Arizona license number 5352, 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 James B. Klein, MD prescribe under Medicare Part D?
In 2024, James B. Klein, MD had 43 Medicare Part D claims; the average among colon & rectal surgery physician prescribers was 192. 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.