MARIA L FASSARI MD
NPI 1295860500
Internal Medicine in Janesville, WI

Q: What is Maria Fassari's NPI number?

The NPI number for Maria Fassari is 1295860500. It was assigned to this individual provider in the NPPES registry on February 23, 2007.

Q: What is Maria Fassari'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 Maria Fassari was last updated on November 12, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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 February 23, 2007PECOS EnrolledAccepts Medicare Assignment

3400 E RACINE ST, JANESVILLE, WI 53546(608) 373-8000(608) 373-8514 Get Directions Write a Review

NPPES record last updated: November 12, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 12, 2020, Mar 6, 2020 (2 updates tracked since 2020).

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About Maria L Fassari Md NPPES

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

MARIA L FASSARI MD (NPI 1295860500) is an individual internal medicine provider in Janesville, Wisconsin, licensed in Wisconsin (67628-20) and active in the NPI registry since February 2007. She is enrolled in Medicare PECOS, is affiliated with Elmhurst Memorial Hospital, and is a graduate of Other (2015).

NPPES Registry Identity

NPI1295860500

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameMARIA L FASSARICredential: MD

Location Address3400 E RACINE STJanesville, WI 53546-2344

Mailing Address1808 W Beltline HwyMadison, WI 53713-2334 · (608) 250-1497 · Fax (608) 250-1453

Phone(608) 373-8000

Fax(608) 373-8514

Sole ProprietorNo

Medical School CMSOtherGraduated 2015

Enumeration DateFebruary 23, 2007

Last NPPES UpdateNovember 12, 20202 updates tracked since enumeration

NPPES CertifiedNovember 12, 2020

✔ NPI 1295860500 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

Licenses✔ Licensed in WI · 67628-20✔ Licensed in IL · 036-116724

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.

3400 E RACINE ST, Janesville, WI 53546

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Other Identifiers 1

Medicaid1295860500WI

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

Maria L Fassari 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 ID3779681515

PECOS Enrollment IDI20070601000495

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 Maria Fassari reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mercy Health System Corporation

2.9 mi

Multi-Specialty

580 N WASHINGTON ST
Janesville, WI 53548

Reassigned Medicare billing, Wisconsin enrollment
1,155 clinicians in this Medicare group

NPI 1598718603 (608) 741-7630

Elmhurst Memorial Healthcare

75 mi

Internal Medicine

172 E SCHILLER ST
Elmhurst, IL 60126

Reassigned Medicare billing, Illinois enrollment
240 clinicians in this Medicare group

NPI 1497076392 (331) 221-0000

Endeavor Health Medical Group

78 mi

Anesthesiology

2650 RIDGE AVE, ANESTHESIOLOGY ROOM 3905
Evanston, IL 60201

Reassigned Medicare billing, Illinois enrollment
4,841 clinicians in this Medicare group

NPI 1265695944 (847) 570-2760

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 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.

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.

599 services249 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.

159 services155 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.

23 services23 patients

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.

21 services13 patients

Hospital Affiliations CMS Care Compare

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

Elmhurst Memorial Hospital

Acute Care Hospitals · Elmhurst, IL

4/5 CMS rating

OwnershipProprietary

CMS Certification Number140200

Location155 East Brush Hill RoadElmhurst, IL 60126 · Du Page County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 53546 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.

Referred Medical Equipment & Supplies CMS DME claims 2

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

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

2 suppliers13 claims13 services$21.29 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

3 suppliers18 claims18 services$106.59 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.

SSM HEALTH CARE OF WISCONSIN, INC.

Durable Medical Equipment & Medical Supplies