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TERESA A MULZER APNP
NPI 1861959371
Nurse Practitioner in De Pere, WI

Active since February 21, 2019PECOS EnrolledAccepts Medicare Assignment
1716 LAWRENCE DR STE 103, DE PERE, WI 54115(920) 632-6800(920) 632-6806 Get Directions Write a Review

NPPES record last updated: December 11, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Dec 11, 2025, May 20, 2025, Nov 24, 2021 and 3 more (6 updates tracked since 2019).

About Teresa A Mulzer Apnp NPPES

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

TERESA A MULZER APNP (NPI 1861959371) is an individual nurse practitioner in De Pere, Wisconsin, licensed in Wisconsin (9071) and active in the NPI registry since February 2019. She is enrolled in Medicare PECOS, is affiliated with Aurora Medical Ctr Oshkosh, and maintains 7 additional practice locations.

NPPES Registry Identity

NPI1861959371
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameTERESA A MULZERCredential: APNP
Location Address1716 LAWRENCE DR STE 103De Pere, WI 54115-9108
Mailing Address1716 Lawrence Dr Ste 103De Pere, WI 54115-9108 · (920) 632-6800 · Fax (920) 632-6806
Phone(920) 632-6800
Fax(920) 632-6806
Sole ProprietorNo
Medical School CMSOtherGraduated 2018
Enumeration DateFebruary 21, 2019
Last NPPES UpdateDecember 11, 20256 updates tracked since enumeration
NPPES CertifiedDecember 11, 2025
✔ NPI 1861959371 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in WI · 9071
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Also ListedNurse Practitioner · FamilyTaxonomy 363LF0000X · License 9071-33 (WI)
1716 LAWRENCE DR STE 103, De Pere, WI 54115
Open in Google Maps ↗

Other Names 1

Former Name (1)Teresa A Besaw

Secondary Practice Locations 7

Location 12700 W 9th Ave Ste 305Oshkosh, WI 54904-7865 · Phone (920) 632-6800 · Fax (920) 632-6806
Location 21501 S Madison StAppleton, WI 54915-1846 · Phone (920) 632-6800 · Fax (920) 632-6806
Location 3451 E Brooklyn St Ste 1Chilton, WI 53014-1595 · Phone (920) 632-6800 · Fax (920) 632-6806
Location 41540 Lyon DrNeenah, WI 54956-5035 · Phone (920) 632-6800 · Fax (920) 632-6806
Location 51506 S Oneida StAppleton, WI 54915-1305 · Phone (920) 632-6800 · Fax (920) 632-6806
Location 6614 Memorial DrChilton, WI 53014-1568 · Phone (920) 632-6800 · Fax (920) 632-6806
Location 7500 S Oakwood RdOshkosh, WI 54904-7944 · Phone (920) 632-6800 · Fax (920) 632-6806

Other Identifiers 1

Medicaid100088577WI

Accepted Insurance

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

Teresa A Mulzer Apnp 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 ID1456694728
PECOS Enrollment IDI20190530001351
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 4

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.

Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301
Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.
88 services14 patients
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.
63 services36 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.
39 services27 patients
Aspiration and/or injection of fluid large joint using ultrasound guidance 20611
This procedure involves using ultrasound technology to accurately locate a large joint, usually the knee or shoulder. A needle is then inserted to either extract fluid (aspiration) or inject medication. The ultrasound helps ensure precision and safety.
15 services12 patients

Hospital Affiliations CMS Care Compare

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

Aurora Medical Ctr Oshkosh

Acute Care Hospitals · Oshkosh, WI
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520198
Location855 N Westhaven DriveOshkosh, WI 54904 · Winnebago County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 54115 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.

Other Providers at the Same Location NPPES 8

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

AMMAR MAHMOUD M.D
Anesthesiology (Pain Medicine)
1716 LAWRENCE DR STE 103
DE PERE, WI 54115
Brown County (920) 632-6800
LENA DIMATTEO APNP
Nurse Practitioner
1716 LAWRENCE DR STE 103
DE PERE, WI 54115
Brown County (920) 632-6800
DR. YUSSR M IBRAHIM MD
Anesthesiology (Pain Medicine)
1716 LAWRENCE DR STE 103
DE PERE, WI 54115
Brown County (920) 632-6800
DR. MANSOOR MOHAMMAD AMAN M.D.
Anesthesiology
1716 LAWRENCE DR STE 103
DE PERE, WI 54115
Brown County (920) 632-6800
ANNALISE M MATHISEN PA-C
Physician Assistant
1716 LAWRENCE DR STE 103
DE PERE, WI 54115
Brown County (920) 632-6800
VISHAL M PATEL
Pain Medicine (Interventional Pain Medicine)
1716 LAWRENCE DR STE 103
DE PERE, WI 54115
Brown County (920) 632-6800
KAELYN E HUEBSCHMAN APNP
Nurse Practitioner
1716 LAWRENCE DR STE 103
DE PERE, WI 54115
Brown County (920) 632-6800
ALLEVIATE PAIN AND SPINE, SC
Anesthesiology (Pain Medicine)
1716 LAWRENCE DR STE 103
DE PERE, WI 54115
Brown County (920) 632-6800

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 Teresa Mulzer's NPI number?

The NPI number for Teresa Mulzer is 1861959371. It was assigned to this individual provider in the NPPES registry on February 21, 2019. The provider is also known as Teresa A Besaw.

Where is Teresa Mulzer located?

Teresa Mulzer practices at 1716 Lawrence Dr Ste 103, De Pere, WI 54115. The listed phone number is (920) 632-6800.

What is Teresa Mulzer's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Teresa Mulzer enrolled in Medicare?

Yes. Teresa Mulzer 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 Teresa Mulzer accept?

Health plans from Anthem Blue Cross and Blue Shield, Network Health and UnitedHealthcare list Teresa Mulzer 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 Teresa Mulzer affiliated with any hospitals?

According to CMS data, Teresa Mulzer is affiliated with Aurora Medical Ctr Oshkosh.

When was this NPI record last updated?

The NPPES record for Teresa Mulzer was last updated on December 11, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.