Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Frederick A Klein, MD

Individual provider Gastroenterology Physician · NPI 1962487876

Dr. Frederick A Klein, MD is a Gastroenterology in Tucson, Arizona. Graduated from Northwestern University Feinberg Medical School in 1980, 46 years ago. Practices with Arizona Gastroenterology Ltd, a 9-clinician group and accepts Medicare assignment. Licensed in Arizona.

Years since qualifying
46
Trained at
Northwestern University Feinberg Medical School
Licensed in
AZ
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

7566 N La Cholla Blvd Ste A
Tucson, AZ 85741-2307
Phone: (520) 742-4139
Fax: (520) 742-9618
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 11761 (AZ)

Record details

NPI number1962487876
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 13, 2005
Last updated in NPPESJuly 13, 2026
Mailing address7566 N La Cholla Blvd, Ste A, Tucson, AZ 85741-2307

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Medical schoolNORTHWESTERN UNIVERSITY FEINBERG MEDICAL SCHOOL
Graduated 1980 (46 years in practice)
Group practice Arizona Gastroenterology Ltd — 9 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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