REBEKKAH WARREN FRUNZAC MD, PHD
NPI 1033497169
Surgery in Rochester, MN

Q: What is Rebekkah Frunzac's NPI number?

The NPI number for Rebekkah Frunzac is 1033497169. It was assigned to this individual provider in the NPPES registry on July 22, 2011. The provider is also known as Rebekkah Lynn Warren.

Q: What is Rebekkah Frunzac's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Q: When was this NPI record last updated?

The NPPES record for Rebekkah Frunzac was last updated on December 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months 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 July 22, 2011PECOS EnrolledAccepts Medicare Assignment

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

NPPES record last updated: December 12, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 12, 2025, Oct 26, 2020 (2 updates tracked since 2020).

On this page

About Rebekkah Warren Frunzac Md, Phd NPPES

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

REBEKKAH WARREN FRUNZAC MD, PHD (NPI 1033497169) is an individual surgery provider in Rochester, Minnesota, licensed in Minnesota (55504) and active in the NPI registry since July 2011. She is enrolled in Medicare PECOS, is affiliated with Mayo Clinic Hospital Rochester, and maintains a secondary practice location in La Crosse.

NPPES Registry Identity

NPI1033497169

Entity TypeIndividualFemale

Primary Taxonomy208600000X

Provider Legal NameREBEKKAH WARREN FRUNZACCredential: MD, PHD

Location Address200 1ST ST SWRochester, MN 55905-0001

Mailing AddressPo Box 860912Minneapolis, MN 55486-0912 · (507) 284-2511

Phone(507) 284-2511

Sole ProprietorNo

Medical School CMSOtherGraduated 2011

Enumeration DateJuly 22, 2011

Last NPPES UpdateDecember 12, 20252 updates tracked since enumeration

NPPES CertifiedDecember 12, 2025

✔ NPI 1033497169 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians

Taxonomy Code208600000X

Licenses✔ Licensed in MN · 55504✔ Licensed in WI · 103296

Definition

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

200 1ST ST SW, Rochester, MN 55905

Open in Google Maps ↗

Other Names 1

Former Name (1)Rebekkah Lynn Warren

Secondary Practice Location 1

Location 1700 West Ave SLa Crosse, WI 54601-8806 · Phone (608) 785-0940

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Sanford Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Rebekkah Warren Frunzac Md, Phd 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 ID547416265

PECOS Enrollment IDI20120813000758, I20251223003832

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.

Medicare Billing Reassignments

Medicare enrollment records show Rebekkah Frunzac reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mayo Clinic

10 mi

Infectious Disease

200 1ST ST SW
Rochester, MN 55905

Reassigned Medicare billing, Minnesota enrollment
6,534 clinicians in this Medicare group

NPI 1114343860 (507) 284-2511

Mayo Clinic Health System-Lake City

24 mi

Multi-Specialty

500 W GRANT ST
Lake City, MN 55041

Reassigned Medicare billing, Minnesota enrollment
819 clinicians in this Medicare group

NPI 1164463659 (651) 345-3321

Mayo Clinic Health System-Southeast Minnesota Region

25 mi

Multi-Specialty

701 HEWITT BLVD
Red Wing, MN 55066

Reassigned Medicare billing, Minnesota enrollment
1,571 clinicians in this Medicare group

NPI 1114453883 (651) 267-5000

Mayo Clinic Health System-Southwest Minnesota Region

49 mi

Multi-Specialty

501 STATE ST N
Waseca, MN 56093

Reassigned Medicare billing, Minnesota enrollment
Also billed through NPI 1740256668 (Minnesota)
1,572 clinicians in this Medicare group

NPI 1518494251 (507) 835-1210

Mayo Clinic Health System-Southwest Wisconsin Region, Inc.

69 mi

Multi-Specialty

800 WEST AVE S
La Crosse, WI 54601

Reassigned Medicare billing, Wisconsin enrollment
1,003 clinicians in this Medicare group

NPI 1629056049 (608) 392-3861

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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.

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

64 services64 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

25 services25 patients

Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43235

This procedure, known as an upper endoscopy, involves inserting a thin, flexible tube with a camera down the throat to examine the esophagus, stomach, and upper small bowel. It helps diagnose conditions like ulcers or inflammation.

21 services21 patients

Colorectal cancer screening; colonoscopy on individual at high risk G0105

Colorectal cancer screening, specifically a colonoscopy, is a preventive measure for those at high risk. A thin, flexible tube with a camera inspects the colon to spot any abnormal growths. This test helps detect potential issues early, enhancing the effectiveness of treatment.

17 services17 patients

Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221

Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.

13 services13 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

Mayo Clinic Health System - Albert Lea And Austin

Acute Care Hospitals · Albert Lea, MN

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number240043

Location404 West Fountain StreetAlbert Lea, MN 56007 · Freeborn County

Emergency services Birthing friendly

Mayo Clinic Health System - Waseca

Critical Access Hospitals · Waseca, MN

OwnershipVoluntary non-profit - Private

CMS Certification Number241345

Location501 North State StreetWaseca, MN 56093 · Waseca County

Emergency services

Mayo Clinic Health System-Franciscan Medical Center Inc

Acute Care Hospitals · La Crosse, WI

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520004

Location700 West Avenue SouthLa Crosse, WI 54601 · La Crosse 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

$85.82 typical visit price

range $56.00 – $168.28

Typical copayment $21.45 (range $14.00 – $42.07)

Most-billed visit code 99203

Established Patient

$69.74 typical visit price

range $18.32 – $138.04

Typical copayment $17.43 (range $4.58 – $34.51)

Most-billed visit code 99213

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