MARCUS R SEPNAFSKI MD
NPI 1356906754
Hospitalist in Weston, WI

Q: What is Marcus Sepnafski's NPI number?

The NPI number for Marcus Sepnafski is 1356906754. It was assigned to this individual provider in the NPPES registry on May 1, 2019.

Q: What is Marcus Sepnafski's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Q: When was this NPI record last updated?

The NPPES record for Marcus Sepnafski was last updated on December 7, 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.

Active since May 01, 2019PECOS EnrolledAccepts Medicare Assignment

78.85/100

CMS Quality Rating

3400 MINISTRY PKWY, WESTON, WI 54476(715) 393-1000 Get Directions Write a Review

NPPES record last updated: December 7, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 7, 2022, May 1, 2019 (2 updates tracked since 2019).

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About Marcus R Sepnafski Md NPPES

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

MARCUS R SEPNAFSKI MD (NPI 1356906754) is an individual hospitalist provider in Weston, Wisconsin, licensed in Wisconsin (76812) and active in the NPI registry since May 2019. He is enrolled in Medicare PECOS, is affiliated with Marshfield Medical Center, and maintains a secondary practice location in Detroit.

NPPES Registry Identity

NPI1356906754

Entity TypeIndividualMale

Primary Taxonomy208M00000X

Provider Legal NameMARCUS R SEPNAFSKICredential: MD

Location Address3400 MINISTRY PKWYWeston, WI 54476-5220

Mailing Address3400 Ministry PkwyWeston, WI 54476-5220 · (715) 393-1000

Phone(715) 393-1000

Sole ProprietorNo

Medical School CMSOtherGraduated 2019

Enumeration DateMay 1, 2019

Last NPPES UpdateDecember 7, 20222 updates tracked since enumeration

NPPES CertifiedDecember 7, 2022

✔ NPI 1356906754 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians

Taxonomy Code208M00000X

License✔ Licensed in WI · 76812

Definition

Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

3400 MINISTRY PKWY, Weston, WI 54476

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Secondary Practice Location 1

Location 150 E Canfield StDetroit, MI 48201-1804 · Phone (313) 745-4525

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

Marcus R Sepnafski 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 ID648505552

PECOS Enrollment IDI20220601000645

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 Marcus Sepnafski reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mchs Hospitals Inc

Same address

Clinic/Center

3400 MINISTRY PKWY
Weston, WI 54476

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

NPI 1992336655 (715) 393-1000

Marshfield Clinic Inc

34 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 6

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

174 services83 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

93 services38 patients

Hospital discharge day management, more than 30 minutes 99239

Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.

81 services77 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

48 services46 patients

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

37 services14 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

16 services16 patients

Hospital Affiliations CMS Care Compare 3

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

Marshfield Medical Center

Acute Care Hospitals · Marshfield, WI

3/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number520037

Location611 St Joseph AveMarshfield, WI 54449 · Wood County

Emergency services Birthing friendly

Marshfield Medical Center - Weston

Acute Care Hospitals · Weston, WI

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520202

Location3400 Ministry ParkwayWeston, WI 54476 · Marathon County

Emergency services Birthing friendly

Marshfield Medical Center - Minocqua

Acute Care Hospitals · Minocqua, WI

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520212

Location9576 Highway 70Minocqua, WI 54548 · Oneida County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 54476 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.

78.85/100

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

Scored as part of a group practice

Quality

66.68

Promoting Interoperability

Improvement Activities

Cost

54.87

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

4 suppliers12 claims13 services$101.21 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.

DR. ANA MARIA PAGAN CABRERA M.D.

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