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

GRANT AUGUST WINTHEISER MD
NPI 1043770092
Internal Medicine - Medical Oncology in Rochester, MN

Q: What is Grant Wintheiser's NPI number?

The NPI number for Grant Wintheiser is 1043770092. It was assigned to this individual provider in the NPPES registry on March 24, 2019.

Q: What is Grant Wintheiser's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Q: When was this NPI record last updated?

The NPPES record for Grant Wintheiser was last updated on July 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 24 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.

Active since March 24, 2019PECOS Enrolled

200 1ST ST SW, ROCHESTER, MN 55905(507) 284-2511 Get Directions Write a Review

NPPES record last updated: July 20, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 20, 2026, Jun 4, 2025, May 7, 2025 and 4 more (7 updates tracked since 2019).

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About Grant August Wintheiser Md NPPES

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

GRANT AUGUST WINTHEISER MD (NPI 1043770092) is an individual medical oncology provider in Rochester, Minnesota, licensed in Minnesota (67278) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS, is affiliated with Mayo Clinic Hospital Rochester, and maintains a secondary practice location in Coon Rapids.

NPPES Registry Identity

NPI1043770092

Entity TypeIndividualMale

Primary Taxonomy207RX0202X

Provider Legal NameGRANT AUGUST WINTHEISERCredential: MD

Location Address200 1ST ST SWRochester, MN 55905-0001

Mailing Address2925 Chicago AveMinneapolis, MN 55407-1321 · (612) 262-9000

Phone(507) 284-2511

Sole ProprietorNo

Medical School CMSCreighton University School Of MedicineGraduated 2019

Enumeration DateMarch 24, 2019

Last NPPES UpdateJuly 20, 20267 updates tracked since enumeration

NPPES CertifiedJuly 20, 2026

✔ NPI 1043770092 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RX0202X

License✔ Licensed in MN · 67278

Definition

An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.

Also ListedInternal MedicineTaxonomy 207R00000X · License 67278 (MN)

Also ListedInternal Medicine · Hematology & OncologyTaxonomy 207RH0003X · License 67278 (MN)

200 1ST ST SW, Rochester, MN 55905

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Secondary Practice Location 1

Location 111850 Blackfoot St NW Ste 300Coon Rapids, MN 55433-2772 · Phone (763) 236-0808

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include HealthPartners.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Grant August Wintheiser Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2860726791

PECOS Enrollment IDI20200810002278

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

103 services58 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

61 services47 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

37 services37 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

16 services16 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

12 services12 patients

Hospital Affiliations CMS Care Compare 4

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Mayo Clinic Hospital Rochester

Acute Care Hospitals · Rochester, MN

5/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number240010

Location1216 Second Street SouthwestRochester, MN 55902 · Olmsted County

Emergency services Birthing friendly

Cambridge Medical Center

Acute Care Hospitals · Cambridge, MN

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number240020

Location701 South Dellwood AvenueCambridge, MN 55008 · Isanti County

Emergency services

Abbott Northwestern Hospital

Acute Care Hospitals · Minneapolis, MN

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number240057

Location800 East 28th StreetMinneapolis, MN 55407 · Hennepin County

Emergency services Birthing friendly

Mercy Hospital

Acute Care Hospitals · Coon Rapids, MN

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number240115

Location4050 Coon Rapids BlvdCoon Rapids, MN 55433 · Anoka County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 55905 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$168.28 typical visit price

range $56.00 – $168.28

Typical copayment $42.07 (range $14.00 – $42.07)

Most-billed visit code 99205

Established Patient

$98.61 typical visit price

range $18.32 – $138.04

Typical copayment $24.65 (range $4.58 – $34.51)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

EMILY LEASURE MD

Internal Medicine