ROBERT JEN M.D.
NPI 1104169994
Internal Medicine in Oak Lawn, IL

Q: What is Robert Jen's NPI number?

The NPI number for Robert Jen is 1104169994. It was assigned to this individual provider in the NPPES registry on April 1, 2013.

Q: What is Robert Jen'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 Robert Jen was last updated on October 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months 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 April 01, 2013PECOS EnrolledAccepts Medicare Assignment

4440 W 95TH ST, OAK LAWN, IL 60453(708) 684-8000 Get Directions Write a Review

NPPES record last updated: October 6, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Oct 6, 2025, Dec 20, 2021 (2 updates tracked since 2021).

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About Robert Jen M.d. NPPES

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

ROBERT JEN M.D. (NPI 1104169994) is an individual internal medicine provider in Oak Lawn, Illinois, licensed in Illinois (125.063485) and active in the NPI registry since April 2013. He is enrolled in Medicare PECOS, is affiliated with Advocate Christ Hospital & Medical Center, and is a graduate of University Of Cincinnati College Of Medicine (2013).

NPPES Registry Identity

NPI1104169994

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameROBERT JENCredential: M.D.

Location Address4440 W 95TH STOak Lawn, IL 60453-2600

Mailing Address29373 Network PlChicago, IL 60673-1293 · (847) 390-5900

Phone(708) 684-8000

Sole ProprietorYes

Medical School CMSUniversity Of Cincinnati College Of MedicineGraduated 2013

Enumeration DateApril 1, 2013

Last NPPES UpdateOctober 6, 20252 updates tracked since enumeration

NPPES CertifiedOctober 6, 2025

✔ NPI 1104169994 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in IL · 125.063485

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.

4440 W 95TH ST, Oak Lawn, IL 60453

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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

Robert Jen 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 ID6002117041

PECOS Enrollment IDI20161227000964

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 3

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.

511 services119 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.

53 services52 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.

49 services48 patients

Hospital Affiliations CMS Care Compare

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

Advocate Christ Hospital & Medical Center

Acute Care Hospitals · Oak Lawn, IL

2/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140208

Location4440 W 95th StreetOak Lawn, IL 60453 · Cook County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60453 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

$138.86 typical visit price

range $60.08 – $183.39

Typical copayment $34.71 (range $15.02 – $45.84)

Most-billed visit code 99204

Established Patient

$105.70 typical visit price

range $18.97 – $148.12

Typical copayment $26.42 (range $4.74 – $37.03)

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 suppliers26 claims26 services$14.98 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

2 suppliers26 claims26 services$65.48 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. MARK ADRIAN FAASSE MD

Urology