DR. SANDRA JEAN FROHLING MD
NPI 1164532313
Internal Medicine in Eau Claire, WI

Q: What is Sandra Frohling's NPI number?

The NPI number for Sandra Frohling is 1164532313. It was assigned to this individual provider in the NPPES registry on August 30, 2006.

Q: What is Sandra Frohling's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Sandra Frohling was last updated on August 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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 August 30, 2006PECOS EnrolledAccepts Medicare Assignment

82.79/100

CMS Quality Rating

733 W CLAIREMONT AVE, EAU CLAIRE, WI 54701(715) 838-5025 Get Directions Write a Review

NPPES record last updated: August 28, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 28, 2026, Apr 8, 2024 (2 updates tracked since 2024).

On this page

About Dr. Sandra Jean Frohling Md NPPES

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

DR. SANDRA JEAN FROHLING MD (NPI 1164532313) is an individual internal medicine provider in Eau Claire, Wisconsin, licensed in Wisconsin (40940) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS, is affiliated with Mayo Clinic Health System Eau Claire Hospital, and is a graduate of University Of Washington School Of Medicine (1996).

NPPES Registry Identity

NPI1164532313

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameDR. SANDRA JEAN FROHLINGCredential: MD

Location Address733 W CLAIREMONT AVEEau Claire, WI 54701-6101

Mailing Address200 1st St SwRochester, MN 55905-0001 · (507) 284-2511

Phone(715) 838-5025

Sole ProprietorNo

Medical School CMSUniversity Of Washington School Of MedicineGraduated 1996

Enumeration DateAugust 30, 2006

Last NPPES UpdateAugust 28, 20262 updates tracked since enumeration

NPPES CertifiedAugust 28, 2026

✔ NPI 1164532313 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in WI · 40940

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

733 W CLAIREMONT AVE, Eau Claire, WI 54701

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Other Identifiers 1

Medicaid32546700WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Security 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

Dr. Sandra Jean Frohling 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 ID42340408

PECOS Enrollment IDI20100610000757

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 Sandra Frohling reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mayo Clinic Health System-Northwest Wisconsin Region, Inc.

Same address

Multi-Specialty

733 W CLAIREMONT AVE
Eau Claire, WI 54701

Reassigned Medicare billing, Wisconsin enrollment
1,248 clinicians in this Medicare group

NPI 1235588831 (715) 838-5222

Mchs Hospitals Inc

0.6 mi

Clinic/Center

2310 CRAIG RD
Eau Claire, WI 54701

Reassigned Medicare billing, Wisconsin enrollment
2,476 clinicians in this Medicare group

NPI 1316416035 (715) 858-8100

Lakeview Medical Center Inc Of Rice Lake

37 mi

Clinic/Center

806 2ND ST
Chetek, WI 54728

Reassigned Medicare billing, Wisconsin enrollment
1,616 clinicians in this Medicare group

NPI 1659008605 (715) 924-2000

Marshfield Clinic Inc

66 mi

Clinic/Center

1000 N OAK AVE
Marshfield, WI 54449

Reassigned Medicare billing, Wisconsin enrollment
2,540 clinicians in this Medicare group

NPI 1952347981 (715) 387-5511

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 9

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.

105 services81 patients

Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212

This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.

88 services34 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.

56 services56 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

32 services32 patients

Influenza vaccine split virus, preservative free 90662

The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.

28 services28 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

23 services23 patients

Hospital Affiliations CMS Care Compare 5

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

Mayo Clinic Health System Eau Claire Hospital

Acute Care Hospitals · Eau Claire, WI

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520070

Location1221 Whipple StEau Claire, WI 54703 · Eau Claire County

Emergency services Birthing friendly

Marshfield Medical Center - Eau Claire

Acute Care Hospitals · Eau Claire, WI

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520210

Location2310 Craig RdEau Claire, WI 54701 · Eau Claire County

Emergency services Birthing friendly

Mayo Clinic Health System Chippewa Valley

Critical Access Hospitals · Bloomer, WI

OwnershipVoluntary non-profit - Private

CMS Certification Number521314

Location1501 Thompson StBloomer, WI 54724 · Chippewa County

Emergency services

Mayo Clinic Health System-Northland

Critical Access Hospitals · Barron, WI

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number521315

Location1222 E Woodland AveBarron, WI 54812 · Barron County

Emergency services

Mayo Clinic Health System-Red Cedar Inc

Critical Access Hospitals · Menomonie, WI

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number521340

Location2321 Stout RdMenomonie, WI 54751 · Dunn County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 54701 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

$123.69 typical visit price

range $53.90 – $163.24

Typical copayment $30.92 (range $13.47 – $40.81)

Most-billed visit code 99204

Established Patient

$95.41 typical visit price

range $17.40 – $133.76

Typical copayment $23.85 (range $4.35 – $33.44)

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

82.79/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

68.98

Promoting Interoperability

Improvement Activities

Cost

66.19

Referred Medical Equipment & Supplies CMS DME claims 5

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

12 suppliers63 claims122 services$4.69 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

11 suppliers22 claims23 services$0.74 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

1 supplier12 claims21 services$90.94 avg. paid by Medicare

Standard wheelchair K0001

DME-Wheelchairs · category DD000N

1 supplier18 claims18 services$15.44 avg. paid by Medicare

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553

DME-Other DME · category DE017N

5 suppliers34 claims34 services$175.78 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

KRISTI K FECIK PHARM D

Pharmacist

733 W CLAIREMONT AVE
EAU CLAIRE, WI 54701

Eau Claire County (715) 838-5000

HOPE C. ST JEAN CNP

Nurse Practitioner

733 W CLAIREMONT AVE
EAU CLAIRE, WI 54701

Eau Claire County (715) 838-3311

ANDREW E FLOREN MD

Preventive Medicine (Occupational Medicine)

733 W CLAIREMONT AVE
EAU CLAIRE, WI 54701

Eau Claire County (715) 838-5222

NAMRATA MEHTA MD

Family Medicine

733 W CLAIREMONT AVE
EAU CLAIRE, WI 54701

Eau Claire County (715) 838-5222

NOEL ELIZABETH KROEPLIN PA-C

Physician Assistant

733 W CLAIREMONT AVE
EAU CLAIRE, WI 54701

Eau Claire County (715) 838-5222

MAYO CLINIC HEALTH SYSTEM - PHARMACY & HOME MEDICAL, INC

Durable Medical Equipment & Medical Supplies

733 W CLAIREMONT AVE, SUITE PHM # 1
EAU CLAIRE, WI 54701

Eau Claire County (715) 838-5000

MARK ALAN SWANSON APRN-FNP

Nurse Practitioner

733 W CLAIREMONT AVE
EAU CLAIRE, WI 54701

Eau Claire County (715) 838-5222

JEFFREY J GROSHENS MD

Family Medicine

733 W CLAIREMONT AVE
EAU CLAIRE, WI 54701

Eau Claire County (715) 838-5222

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 Sandra Frohling's NPI number?

The NPI number for Sandra Frohling is 1164532313. It was assigned to this individual provider in the NPPES registry on August 30, 2006.

Where is Sandra Frohling located?

Sandra Frohling practices at 733 W Clairemont Ave, Eau Claire, WI 54701. The listed phone number is (715) 838-5025.

What is Sandra Frohling's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Sandra Frohling enrolled in Medicare?

Yes. Sandra Frohling is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Sandra Frohling's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sandra Frohling reassigns Medicare benefits to 4 organizations: Mayo Clinic Health System-Northwest Wisconsin Region, Inc. (Eau Claire, WI), Mchs Hospitals Inc (Eau Claire, WI), Lakeview Medical Center Inc Of Rice Lake (Chetek, WI) and Marshfield Clinic Inc (Marshfield, WI). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Sandra Frohling's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Sandra Frohling accept?

Health plans from Anthem Blue Cross and Blue Shield and Security Health Plan list Sandra Frohling as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Sandra Frohling affiliated with any hospitals?

According to CMS data, Sandra Frohling is affiliated with Mayo Clinic Health System Eau Claire Hospital, Marshfield Medical Center - Eau Claire, Mayo Clinic Health System Chippewa Valley, Mayo Clinic Health System-Northland and Mayo Clinic Health System-Red Cedar Inc.

When was this NPI record last updated?

The NPPES record for Sandra Frohling was last updated on August 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.