DR. JASON L PENG MD
NPI 1124481270
Internal Medicine - Sleep Medicine in Chicago, IL

Q: What is Jason Peng's NPI number?

The NPI number for Jason Peng is 1124481270. It was assigned to this individual provider in the NPPES registry on April 5, 2016.

Q: What is Jason Peng's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Sleep Medicine, with taxonomy code 207RS0012X.

Q: When was this NPI record last updated?

The NPPES record for Jason Peng was last updated on June 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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 05, 2016PECOS EnrolledAccepts Medicare Assignment

676 N SAINT CLAIR ST STE 7-701, CHICAGO, IL 60611(312) 695-7950(312) 926-4771 Get Directions Write a Review

NPPES record last updated: June 4, 2025. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Jun 4, 2025, May 8, 2025, Jan 9, 2025 and 1 more (4 updates tracked since 2020).

On this page

About Dr. Jason L Peng Md NPPES

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

DR. JASON L PENG MD (NPI 1124481270) is an individual sleep medicine provider in Chicago, Illinois, licensed in Illinois (036149345) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS, is affiliated with Northwestern Lake Forest Hospital, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1124481270

Entity TypeIndividualMale

Primary Taxonomy207RS0012X

Provider Legal NameDR. JASON L PENGCredential: MD

Location Address676 N SAINT CLAIR ST STE 7-701Chicago, IL 60611-2927

Mailing Address251 E Huron StChicago, IL 60611-3055

Phone(312) 695-7950

Fax(312) 926-4771

Sole ProprietorNo

Medical School CMSOtherGraduated 2016

Enumeration DateApril 5, 2016

Last NPPES UpdateJune 4, 20254 updates tracked since enumeration

NPPES CertifiedJune 4, 2025

✔ NPI 1124481270 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

★ Primary SpecialtyInternal Medicine · Sleep MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207RS0012X

License✔ Licensed in IL · 036149345

Definition

An Internist who practices Sleep Medicine is certified in the subspecialty of sleep medicine and specializes in the clinical assessment, physiologic testing, diagnosis, management and prevention of sleep and circadian rhythm disorders. Sleep specialists treat patients of any age and use multidisciplinary approaches. Disorders managed by sleep specialists include, but are not limited to, sleep related breathing disorders, insomnia, hypersomnias, circadian rhythm sleep disorders, parasomnias and sleep related movement disorders.

Also ListedInternal Medicine · Critical Care MedicineTaxonomy 207RC0200X · License 036149345 (IL)

Also ListedInternal Medicine · Pulmonary DiseaseTaxonomy 207RP1001X · License 036149345 (IL)

Also ListedHospitalistTaxonomy 208M00000X · License 036149345 (IL)

676 N SAINT CLAIR ST STE 7-701, Chicago, IL 60611

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Secondary Practice Locations 2

Location 12160 S 1st AveMaywood, IL 60153-3328 · Phone (708) 216-5368 · Fax (708) 216-3375

Location 2251 E Huron StChicago, IL 60611-3055 · Phone (312) 503-2849

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

Dr. Jason L Peng 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 ID9133413503

PECOS Enrollment IDI20190626002742

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.

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

31 services29 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.

29 services22 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

17 services17 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.

15 services15 patients

Hospital Affiliations CMS Care Compare 3

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

Northwestern Lake Forest Hospital

Acute Care Hospitals · Lake Forest, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number140130

Location1000 N Westmoreland RoadLake Forest, IL 60045 · Lake County

Emergency services Birthing friendly

Northwestern Medicine Central Dupage Hospital

Acute Care Hospitals · Winfield, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140242

Location25 North Winfield RoadWinfield, IL 60190 · Du Page County

Emergency services Birthing friendly

Northwestern Memorial Hospital

Acute Care Hospitals · Chicago, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140281

Location251 E Huron StChicago, IL 60611 · Cook County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60611 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.

Other Providers at the Same Location NPPES 6

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

ALEXANDER JAEHYUK CHOI M.D., M.P.H.

Psychiatry & Neurology (Sleep Medicine)