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

Larissa Maria Allen, MD

Individual provider Gastroenterology Physician · NPI 1659536480

Larissa Maria Allen, MD is a Gastroenterology in Tucson, Arizona. Graduated from University of Arizona College of Medicine in 2008, 18 years ago. Practices with Arizona Gastroenterology Ltd, a 9-clinician group and accepts Medicare assignment. Licensed in Arizona.

Years since qualifying
18
Trained at
University of Arizona College of Medicine
Licensed in
AZ
In the registry since
2008
Specialties on file
2
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

6130 N La Cholla Blvd Ste 200
Tucson, AZ 85741-3557
Phone: (520) 219-8342
Fax: (520) 219-7117
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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 48787 (AZ)
Internal Medicine Physician Taxonomy 207R00000X · Licence R70554 (AZ)

Record details

NPI number1659536480
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 21, 2008
Last updated in NPPESJanuary 5, 2017

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Medical schoolUNIVERSITY OF ARIZONA COLLEGE OF MEDICINE
Graduated 2008 (18 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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