KATHERINE HARTSTERN MD
NPI 1437773652
Family Medicine in Oshkosh, WI

Active since June 03, 2020PECOS EnrolledAccepts Medicare Assignment
77.77/100
CMS Quality Rating
1855 S KOELLER ST, OSHKOSH, WI 54902(920) 738-2000 Get Directions Write a Review

NPPES record last updated: March 19, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Mar 19, 2025, Jun 3, 2020 (2 updates tracked since 2020).

About Katherine Hartstern Md NPPES

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

KATHERINE HARTSTERN MD (NPI 1437773652) is an individual family medicine provider in Oshkosh, Wisconsin, licensed in Wisconsin (82621) and active in the NPI registry since June 2020. She is enrolled in Medicare PECOS, is affiliated with Ascension Ne Wisconsin - St Elizabeth Campus, and is a graduate of Other (2020).

NPPES Registry Identity

NPI1437773652
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameKATHERINE HARTSTERNCredential: MD
Location Address1855 S KOELLER STOshkosh, WI 54902-6186
Mailing Address1855 S Koeller StOshkosh, WI 54902-6186 · (920) 738-2000
Sole ProprietorNo
Medical School CMSOtherGraduated 2020
Enumeration DateJune 3, 2020
Last NPPES UpdateMarch 19, 20252 updates tracked since enumeration
NPPES CertifiedMarch 19, 2025
NPI 1437773652 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
Licenses Licensed in WI · 82621 Licensed in IL · 125076039
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
1855 S KOELLER ST, Oshkosh, WI 54902

Other Identifiers 1

Medicaid100253512WI

Accepted 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

Katherine Hartstern 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 ID1355765124
PECOS Enrollment IDI20231103002261
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 8

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 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.
78 services48 patients
Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
45 services28 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
39 services39 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.
18 services15 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.
16 services15 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.
12 services12 patients

Hospital Affiliations CMS Care Compare

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

Ascension NE Wisconsin - St Elizabeth Campus

Acute Care Hospitals · Appleton, WI
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520009
Location1506 S Oneida StAppleton, WI 54915 · Outagamie County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 54902 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
$82.92 typical visit price
range $53.90 – $163.24
Typical copayment $20.73 (range $13.47 – $40.81)
Most-billed visit code 99203
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.

77.77/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality77.47
Promoting Interoperability77
Improvement Activities40
Cost63.8

Referred Medical Equipment & Supplies CMS DME claims

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

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
2 suppliers11 claims11 services$118.83 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.

Nurse Practitioner (Adult Health)
1855 S KOELLER ST
OSHKOSH, WI 54902
Family Medicine
1855 S KOELLER ST
OSHKOSH, WI 54902
Nurse Practitioner
1855 S KOELLER ST
OSHKOSH, WI 54902
Family Medicine
1855 S KOELLER ST
OSHKOSH, WI 54902
Psychologist (Clinical)
1855 S KOELLER ST
OSHKOSH, WI 54902
Internal Medicine
1855 S KOELLER ST
OSHKOSH, WI 54902
Nurse Practitioner (Family)
1855 S KOELLER ST
OSHKOSH, WI 54902
Pharmacy (Community/Retail Pharmacy)
1855 S KOELLER ST
OSHKOSH, WI 54902

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 Katherine Hartstern's NPI number?

The NPI number for Katherine Hartstern is 1437773652. It was assigned to this individual provider in the NPPES registry on June 3, 2020.

Where is Katherine Hartstern located?

Katherine Hartstern practices at 1855 S Koeller St, Oshkosh, WI 54902. The listed phone number is (920) 738-2000.

What is Katherine Hartstern's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Katherine Hartstern enrolled in Medicare?

Yes. Katherine Hartstern 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.

What insurance does Katherine Hartstern accept?

Health plans from Anthem Blue Cross and Blue Shield and Network Health list Katherine Hartstern 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 Katherine Hartstern affiliated with any hospitals?

According to CMS data, Katherine Hartstern is affiliated with Ascension NE Wisconsin - St Elizabeth Campus.

When was this NPI record last updated?

The NPPES record for Katherine Hartstern was last updated on March 19, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.