Jacob Willen
Orthopaedic Surgery β’ Chicago, IL
5841 S Maryland Ave
Chicago, IL 606371443
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on March 23, 2018; this date does not establish years in practice.
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Published CMS data list 20 Medicare Part D prescriptions, including refills, in 2022.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2022. Published rows only; this is not a quality measure.
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Published Part D records, 2022:
- Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) β 20 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2022. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table Β· Guide: How to read Medicare Part D prescriber data
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Medicare Part D prescriptions went from 37 in 2019 to 20 in 2022.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2019β2022.
Practice Location & Contact Primary Location
5841 S Maryland Ave
Chicago, IL 606371443
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Orthopaedic Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
20 standardized 30-day fills in 2022
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$116 in 2022
The total cost of these prescriptions in 2022, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2022.
Open Payments general payments, program year 2025
All general payments: $290.70 across 7 records.
By nature of payment
- Food and Beverage: $290.70 across 7 records.
Reporting-company totals
- Globus Medical, Inc.: $181.24 across 2 records.
- OrthoPediatrics Corp.: $109.46 across 5 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
NPI first issued
2018
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, βDoes your provider accept Medicare as full payment?β
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Jacob Willen has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Jacob Willen as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Chicago and Illinois
Billing and prescribing volume is not a quality rating.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Jacob Willen are from 2022.
274 active clinicians are listed under Orthopaedic Surgery with a practice address in Chicago, IL (997 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Chicago
5.8% of these 274 clinicians have the CMS telehealth indicator.
34.7% of these 274 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 46% from 37 in 2019 to 20 in 2022.
- 2019: 37
- 2022: 20
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30-day fills
30-day fills decreased 46% from 37 in 2019 to 20 in 2022.
- 2019: 37
- 2022: 20
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Part D drug cost
Part D drug cost went from $262 in 2019 to $116 in 2022.
- 2019: $262
- 2022: $116
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $450.07 in 2020 to $290.70 in 2025.
- 2020: $450.07
- 2022: $3,825.58
- 2023: $154.29
- 2024: $1,084.82
- 2025: $290.70
Sources: CMS Medicare Part D Prescribers (2022), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 β December 31, 2025): fewer than 11 records totaling $290.70.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Globus Medical, Inc. |
Food and Beverage
Cash or cash equivalent
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RELINE | General | $168.79 |
| OrthoPediatrics Corp. |
Food and Beverage
Cash or cash equivalent
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β | General | $36.89 |
| OrthoPediatrics Corp. |
Food and Beverage
Cash or cash equivalent
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β | General | $28.72 |
| OrthoPediatrics Corp. |
Food and Beverage
Cash or cash equivalent
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β | General | $20.90 |
| OrthoPediatrics Corp. |
Food and Beverage
Cash or cash equivalent
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β | General | $18.36 |
| Globus Medical, Inc. |
Food and Beverage
Cash or cash equivalent
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CREO | General | $12.45 |
| OrthoPediatrics Corp. |
Food and Beverage
Cash or cash equivalent
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β | General | $4.59 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2022.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 20 | 136 | $116.30 | 20 |
Source: CMS Part D by Provider and Drug, 2022; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2024-10-04NUCC Taxonomy Code: 207X00000X
An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.
NUCC Taxonomy Code: 390200000X
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - ORTHOPEDIC SURGERY
I20241016001714
IL
5092108068
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Nurse Practitioner - Family
Obstetrics & Gynecology
Family Medicine
Radiology - Diagnostic Radiology
Internal Medicine - Cardiovascular Disease
Internal Medicine
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 5841 S MARYLAND AVE, CHICAGO, IL 606371443 (Tel: 8888240200)
Registered at 150 HARVESTER DR STE 300, BURR RIDGE, IL 605275965
NPI status registered as active in NPPES database
Registered at 525 E MARKET ST, AKRON, OH 443041619 (Tel: 3303795986)
Registered at 525 E MARKET ST, AKRON, OH 443041619
Recorded as JACOB WILLEN
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Orthopaedic Surgery Specialists in Chicago
- Dr. Navya Dandu, MD
- Dr. Sujal Desai, DO
- Dr. Vineet Shah, DO, MPH
- Dr. Charles Mercier, MD
- Dr. Daniel Newman, MD
- Kyleen Jan
Mailing Address
150 Harvester Dr Ste 300
Burr Ridge, IL 605275965