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DR. NATHAN MICHAEL LARSEN M.D.
NPI 1992887848
Emergency Medicine in Waupaca, WI

Active since October 19, 2006PECOS EnrolledAccepts Medicare Assignment
800 RIVERSIDE DR, WAUPACA, WI 54981(715) 258-1000(715) 258-2000 Get Directions Write a Review

NPPES record last updated: November 17, 2022. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Nov 17, 2022, Aug 3, 2022, Dec 15, 2020 (3 updates tracked since 2020).

About Dr. Nathan Michael Larsen M.d. NPPES

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

DR. NATHAN MICHAEL LARSEN M.D. (NPI 1992887848) is an individual emergency medicine provider in Waupaca, Wisconsin, licensed in Wisconsin (48825-020) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with Thedacare Regional Med Ctr - Neenah, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1992887848
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDR. NATHAN MICHAEL LARSENCredential: M.D.
Location Address800 RIVERSIDE DRWaupaca, WI 54981-1943
Mailing Address800 Riverside DrWaupaca, WI 54981-1943 · (715) 258-1000 · Fax (715) 258-2000
Phone(715) 258-1000
Fax(715) 258-2000
Sole ProprietorNo
Medical School CMSMedical College Of WisconsinGraduated 2004
Enumeration DateOctober 19, 2006
Last NPPES UpdateNovember 17, 20223 updates tracked since enumeration
NPPES CertifiedAugust 3, 2022
✔ NPI 1992887848 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in WI · 48825-020
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
800 RIVERSIDE DR, Waupaca, WI 54981
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Secondary Practice Locations 3

Location 1225 Memorial DrBerlin, WI 54923-1243 · Phone (920) 361-1313 · Fax (920) 361-5499
Location 2100 County Road BShawano, WI 54166-7072 · Phone (715) 526-2111 · Fax (715) 526-9166
Location 31405 Mill StNew London, WI 54961-2155 · Phone (920) 531-2000

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource (Common Ground Healthcare).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

Dr. Nathan Michael Larsen M.d. 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 ID4082713060
PECOS Enrollment IDI20070618000165
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.

Hospital Affiliations CMS Care Compare 5

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

Thedacare Regional Med Ctr - Neenah

Acute Care Hospitals · Neenah, WI
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520045
Location130 2nd StNeenah, WI 54956 · Winnebago County
Emergency services Birthing friendly

Thedacare Regional Medical Center - Appleton Inc

Acute Care Hospitals · Appleton, WI
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520160
Location1818 N Meade StAppleton, WI 54911 · Outagamie County
Emergency services Birthing friendly

Thedacare Medical Center-Waupaca

Critical Access Hospitals · Waupaca, WI
OwnershipVoluntary non-profit - Private
CMS Certification Number521334
Location800 Riverside DriveWaupaca, WI 54981 · Waupaca County
Emergency services Birthing friendly

Thedacare Medical Center - Shawano

Critical Access Hospitals · Shawano, WI
OwnershipVoluntary non-profit - Private
CMS Certification Number521346
Location100 County Rd BShawano, WI 54166 · Shawano County
Emergency services Birthing friendly

Berlin Memorial Hospital

Critical Access Hospitals · Berlin, WI
OwnershipVoluntary non-profit - Private
CMS Certification Number521355
Location225 Memorial DriveBerlin, WI 54923 · Green Lake County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 54981 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 20

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

THEDACARE MEDICAL CENTER - WAUPACA, INC.
General Acute Care Hospital (Critical Access)
800 RIVERSIDE DR
WAUPACA, WI 54981
Waupaca County (715) 258-1000
MR. BRUCE ALLEN PIERSON PT
Physical Therapist
800 RIVERSIDE DR
WAUPACA, WI 54981
Waupaca County (715) 258-1053
AMANDA DEBAUCHE OTR
Occupational Therapist
800 RIVERSIDE DR
WAUPACA, WI 54981
Waupaca County (715) 258-1053
AARON D. REINEKING PA
Physician Assistant
800 RIVERSIDE DR
WAUPACA, WI 54981
Waupaca County (715) 258-1300
THEDACARE MEDICAL CENTER - WAUPACA, INC.
General Acute Care Hospital (Critical Access)
800 RIVERSIDE DR
WAUPACA, WI 54981
Waupaca County (715) 258-1000
CHARLES D WASHINGTON M.D.
Emergency Medicine
800 RIVERSIDE DR
WAUPACA, WI 54981
Waupaca County (715) 258-1000
JASON BONFIGLIO PA
Physician Assistant
800 RIVERSIDE DR
WAUPACA, WI 54981
Waupaca County (715) 258-1000
MR. DEOGRACIAS R ESTRADA M.D.
Hospitalist
800 RIVERSIDE DR
WAUPACA, WI 54981
Waupaca County (715) 258-1000

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 Nathan Larsen's NPI number?

The NPI number for Nathan Larsen is 1992887848. It was assigned to this individual provider in the NPPES registry on October 19, 2006.

Where is Nathan Larsen located?

Nathan Larsen practices at 800 Riverside Dr, Waupaca, WI 54981. The listed phone number is (715) 258-1000.

What is Nathan Larsen's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Nathan Larsen enrolled in Medicare?

Yes. Nathan Larsen 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 Nathan Larsen accept?

Health plans from CareSource (Common Ground Healthcare) list Nathan Larsen 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 Nathan Larsen affiliated with any hospitals?

According to CMS data, Nathan Larsen is affiliated with Thedacare Regional Med Ctr - Neenah, Thedacare Regional Medical Center - Appleton Inc, Thedacare Medical Center-Waupaca, Thedacare Medical Center - Shawano and Berlin Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Nathan Larsen was last updated on November 17, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.