Robert R. Klein, MD
Anatomic Pathology & Clinical Pathology Physician · Tucson, AZ
Robert R. Klein, MD is an anatomic pathology & clinical pathology physician with a practice address in Tucson, Arizona, and NPI 1821197112, issued on Sep 22, 2006. Check the license (Arizona 31339, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Robert R. Klein
- Credential
- MD
- Primary taxonomy
- Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
- License number
- 31339 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 1501 N Campbell Ave, Tucson, AZ 85724
- Phone
- (520) 694-8888
- Enumerated
- Sep 22, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (520) 694-6081
- Medicaid ID
- 963448 AZ
- Medicare enrollment
- Enrolled (PECOS I20051003000900); accepts Medicare assignment
- Medical or professional school
- University Of Utah School Of Medicine, 1997
- Entity
- Type 1 · individual
8 nearest anatomic pathology & clinical pathology physician records → All 324 in Arizona → Look up another NPI →
Also registered at 1501 N Campbell Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Robert R. Klein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 31339Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 97.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Banner-University Medical GroupTucson, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert R. Klein among 324 anatomic pathology & clinical pathology physician records in Arizona
Robert R. Klein, MD is one of 324 anatomic pathology & clinical pathology physician records with a practice address in Arizona. 58% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 54% newer
- In a Medicare fileYes · 58% of these records are
- In the CMS Doctors and Clinicians fileYes · 49% of these records are
- Graduated1997 · median 2001 among the 159 with a school on file
- Record last updated2007 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0102X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anatomic Pathology & Clinical Pathology Physician providers in Arizona
There are 324 anatomic pathology & clinical pathology physician records in Arizona.
All 324 in Arizona → Every provider in Tucson → Anatomic Pathology & Clinical Pathology Physician nationwide →
The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes
- Achyut Bhattacharyya, MDTucson, AZ 857241558372573
- Deborah Fuchs, MDTucson, AZ 857241295747335
- Jennifer Gardetto, M.D.Tucson, AZ 857241699933945
- Thomas Grogan, MDTucson, AZ 857241376658922
- Lauren Lebeau, MDTucson, AZ 857241982814315
- Rebecca Millius, MDTucson, AZ 857241285631481
- Raymond Nagle, MD, PHDTucson, AZ 857241609965730
- Bruce Parks, MDTucson, AZ 857241457633109
Common questions
What is Robert R. Klein, MD's NPI number?
Robert R. Klein, MD's National Provider Identifier (NPI) is 1821197112, issued on Sep 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert R. Klein, MD located?
The NPPES record lists a practice address at 1501 N Campbell Ave, Tucson, AZ, 85724. Phone: (520) 694-8888. Providers update this record themselves, so call before visiting.
How can I verify Robert R. Klein, MD's license?
NPPES lists Arizona license number 31339, 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.
What is Robert R. Klein, MD's MIPS final score?
The 2023 MIPS final score is 97.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.