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MICHAEL WILLIAM FREMGEN
NPI 1447591540
Surgery in Elgin, IL

Active since March 14, 2013PECOS EnrolledAccepts Medicare Assignment
745 FLETCHER DR STE 302, ELGIN, IL 60123(847) 695-6600 Get Directions Write a Review

NPPES record last updated: December 22, 2022. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Dec 22, 2022, Aug 23, 2018 (2 updates tracked since 2018).

About Michael William Fremgen NPPES

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

MICHAEL WILLIAM FREMGEN (NPI 1447591540) is an individual surgery provider in Elgin, Illinois, licensed in Illinois (036.147286) and active in the NPI registry since March 2013. He is enrolled in Medicare PECOS, is affiliated with Advocate Sherman Hospital, and is a graduate of Midwestern University, Chicago College Of Osteopathic Med (2013).

NPPES Registry Identity

NPI1447591540
Entity TypeIndividualMale
Primary Taxonomy208600000X
Provider Legal NameMICHAEL WILLIAM FREMGEN
Location Address745 FLETCHER DR STE 302Elgin, IL 60123-4750
Mailing Address29373 Network PlChicago, IL 60673-7884 · (847) 390-5900
Phone(847) 695-6600
Sole ProprietorNo
Medical School CMSMidwestern University, Chicago College Of Osteopathic MedGraduated 2013
Enumeration DateMarch 14, 2013
Last NPPES UpdateDecember 22, 20222 updates tracked since enumeration
NPPES CertifiedDecember 22, 2022
✔ NPI 1447591540 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
License✔ Licensed in IL · 036.147286
Definition
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
745 FLETCHER DR STE 302, Elgin, IL 60123
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Home State Health, Ambetter Health, Ambetter Health of Delaware.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

Michael William Fremgen 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 ID7719272939
PECOS Enrollment IDI20181203000453
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.

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.
60 services31 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.
29 services29 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
22 services22 patients
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221
Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.
20 services19 patients

Hospital Affiliations CMS Care Compare

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

Advocate Sherman Hospital

Acute Care Hospitals · Elgin, IL
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140030
Location1425 North Randall RoadElgin, IL 60123 · Kane County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60123 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
$93.02 typical visit price
range $59.81 – $181.38
Typical copayment $23.25 (range $14.95 – $45.34)
Most-billed visit code 99203
Established Patient
$74.38 typical visit price
range $19.15 – $147.12
Typical copayment $18.59 (range $4.78 – $36.78)
Most-billed visit code 99213
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 2

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

DR. LILY HSIEH MD
Surgery
745 FLETCHER DR STE 302
ELGIN, IL 60123
Kane County (847) 695-6600
GENERAL AND VASCULAR SURGERY, LTD.
Specialist
745 FLETCHER DR STE 302
ELGIN, IL 60123
Kane County (847) 695-6600

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 Michael Fremgen's NPI number?

The NPI number for Michael Fremgen is 1447591540. It was assigned to this individual provider in the NPPES registry on March 14, 2013.

Where is Michael Fremgen located?

Michael Fremgen practices at 745 Fletcher Dr Ste 302, Elgin, IL 60123. The listed phone number is (847) 695-6600.

What is Michael Fremgen's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Michael Fremgen enrolled in Medicare?

Yes. Michael Fremgen 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 Michael Fremgen accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Home State Health list Michael Fremgen 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 Michael Fremgen affiliated with any hospitals?

According to CMS data, Michael Fremgen is affiliated with Advocate Sherman Hospital.

When was this NPI record last updated?

The NPPES record for Michael Fremgen was last updated on December 22, 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.