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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. GARY L GRAMMENS M.D.
NPI 1528031382
Internal Medicine - Hematology & Oncology in Minneapolis, MN

Active since February 10, 2006
701 25TH AVE S, SUITE # 505, MINNEAPOLIS, MN 55454(612) 455-2050(612) 455-2009 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Gary L Grammens M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. GARY L GRAMMENS M.D. (NPI 1528031382) is an individual hematology & oncology provider in Minneapolis, Minnesota, licensed in Minnesota (22088) and active in the NPI registry since February 2006.

NPPES Registry Identity

NPI1528031382
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameDR. GARY L GRAMMENSCredential: M.D.
Location Address701 25TH AVE S, SUITE # 505Minneapolis, MN 55454-1513
Mailing Address9324 Wyoming Ave SBloomington, MN 55438-1436 · (952) 944-1745
Phone(612) 455-2050
Fax(612) 455-2009
Sole ProprietorNo
Enumeration DateFebruary 10, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1528031382 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in MN · 22088
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
701 25TH AVE S, Minneapolis, MN 55454
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Other Identifiers 1

Other2042086MN · Medical Assistance

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JULIO SOTILLO RODRIGUEZ D.D.S., PH.D.
Dentist (Pediatric Dentistry)
701 25TH AVE S, SUITE 400
MINNEAPOLIS, MN 55454
Hennepin County (612) 625-3249
YINGJIU NIE M.A.
Audiologist
701 25TH AVE S, SUITE 200
MINNEAPOLIS, MN 55454
Hennepin County (612) 339-2836
BARBARA M ORTIZ AUD CCC-A
Audiologist
701 25TH AVE S, SUITE 200
MINNEAPOLIS, MN 55454
Hennepin County (612) 339-2836
DANIEL JOSEPH GERDES
Student in an Organized Health Care Education/Training Program
701 25TH AVE S
MINNEAPOLIS, MN 55454
Hennepin County (651) 346-9364
MADELINE R GOETTL DDS
Dentist
701 25TH AVE S, SUITE 400
MINNEAPOLIS, MN 55454
Hennepin County (612) 659-4900
LAURA MARIE LENIUS CO
Technician/Technologist (Orthoptist)
701 25TH AVE S
MINNEAPOLIS, MN 55454
Hennepin County (612) 365-6777
RODNEY D MCFADDEN MD
Internal Medicine
701 25TH AVE S, SUITE 505
MINNEAPOLIS, MN 55454
Hennepin County (612) 455-2040
TRISTIN JOY SANTORI HID
Hearing Instrument Specialist
701 25TH AVE S, SUITE 200
MINNEAPOLIS, MN 55454
Hennepin County (612) 339-2836

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gary Grammens's NPI number?

The NPI number for Gary Grammens is 1528031382. It was assigned to this individual provider in the NPPES registry on February 10, 2006.

Where is Gary Grammens located?

Gary Grammens practices at 701 25th Ave S Suite # 505, Minneapolis, MN 55454. The listed phone number is (612) 455-2050.

What is Gary Grammens's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

When was this NPI record last updated?

The NPPES record for Gary Grammens was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 38 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.