Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

LINDA S CHAN M.D.
NPI 1235187253
Internal Medicine - Pulmonary Disease in Winfield, IL

Q: What is Linda Chan's NPI number?

The NPI number for Linda Chan is 1235187253. It was assigned to this individual provider in the NPPES registry on May 4, 2006.

Q: What is Linda Chan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

Q: When was this NPI record last updated?

The NPPES record for Linda Chan was last updated on October 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 days 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 May 04, 2006PECOS EnrolledAccepts Medicare Assignment

94.1/100

CMS Quality Rating

25 N WINFIELD RD STE 204, WINFIELD, IL 60190(630) 232-0202(630) 690-2293 Get Directions Write a Review

NPPES record last updated: October 15, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 15, 2026, Dec 18, 2025 (2 updates tracked since 2025).

On this page

About Linda S Chan M.d. NPPES

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

LINDA S CHAN M.D. (NPI 1235187253) is an individual pulmonary disease provider in Winfield, Illinois, licensed in Illinois (036098848) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS, is affiliated with Northwestern Medicine Mchenry, and maintains a secondary practice location in Oak Brook.

NPPES Registry Identity

NPI1235187253

Entity TypeIndividualFemale

Primary Taxonomy207RP1001X

Provider Legal NameLINDA S CHANCredential: M.D.

Location Address25 N WINFIELD RD STE 204Winfield, IL 60190-1379

Mailing Address25 N Winfield Rd Ste 204Winfield, IL 60190-1379 · (630) 232-0202 · Fax (630) 690-2293

Phone(630) 232-0202

Fax(630) 690-2293

Sole ProprietorNo

Medical School CMSLoyola University Of Chicago, Stritch School Of MedicineGraduated 1996

Enumeration DateMay 4, 2006

Last NPPES UpdateOctober 15, 20262 updates tracked since enumeration

NPPES CertifiedOctober 15, 2026

✔ NPI 1235187253 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Pulmonary DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RP1001X

License✔ Licensed in IL · 036098848

Definition

An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.

Also ListedInternal MedicineTaxonomy 207R00000X · License 036098848 (IL)

Also ListedInternal Medicine · Critical Care MedicineTaxonomy 207RC0200X · License 036098848 (IL)

25 N WINFIELD RD STE 204, Winfield, IL 60190

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Secondary Practice Location 1

Location 11001 Commerce Dr Ste 500Oak Brook, IL 60523-8913 · Phone (312) 695-1800 · Fax (331) 732-4561

Other Identifiers 2

Medicaid036098848IL

Other02215074IL · Blue Shield Provider Numb

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

Linda S Chan 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 ID4082739743

PECOS Enrollment IDI20100917000713

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 Reassignment

Medicare enrollment records show Linda Chan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Central Dupage Physician Group

4.4 mi

Family Medicine

5777 DEPARTMENT
Carol Stream, IL 60122

Reassigned Medicare billing, Illinois enrollment
1,664 clinicians in this Medicare group

NPI 1033149844 (630) 933-3300

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 19

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 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.

411 services229 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

216 services174 patients

Test to examine how well the lungs exchange gases 94729

This is a test called a pulmonary function test, which helps understand the efficiency of your lungs. It measures how much air your lungs can hold, how quickly you can move air in and out of your lungs, and how well your lungs put oxygen into and remove carbon dioxide from your blood.

175 services171 patients

Test to determine lung volumes using sensors 94726

This test, called spirometry, measures lung capacity using sensors. You breathe into a mouthpiece attached to a device that records the amount and rate of air you inhale and exhale. It helps diagnose and monitor lung conditions.

173 services169 patients

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.

113 services95 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

112 services98 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.

108 services104 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.

100 services100 patients

Test to measure expiratory airflow and volume changes before and after medication administration 94060

This procedure measures how air flows in and out of your lungs. It's done before and after medication to see if the treatment improves your breathing. It's a simple, non-invasive test that involves breathing into a device called a spirometer.

98 services97 patients

Test to measure rate of airflow 94375

This test, known as spirometry, measures how much air you can breathe in and out, and how quickly you can do so. It helps assess your lung function and can be used to diagnose or monitor conditions like asthma or COPD.

81 services80 patients

Test to determine lung volumes using sensors 94726

36 services36 patients

Test to examine how well the lungs exchange gases 94729

36 services36 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.

36 services36 patients

Test to measure expiratory airflow and volume changes before and after medication administration 94060

23 services23 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.

18 services18 patients

Home sleep test (hst) with type iii portable monitor, unattended; minimum of 4 channels: 2 respiratory movement/airflow, 1 ecg/heart rate and 1 oxygen saturation G0399

A Home Sleep Test (HST) with a Type III Portable Monitor is an unattended test that records your breathing, heart rate, and oxygen levels during sleep. This test uses a minimum of 4 channels to monitor these parameters, helping to diagnose sleep disorders.

15 services15 patients

Test to measure oxygen level in blood using ear or finger device continuously overnight 94762

This procedure involves using a small device, placed on your ear or finger, to continuously monitor your blood oxygen level overnight. It's painless, non-invasive, and helps assess your body's oxygen supply during sleep.

14 services13 patients

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

14 services12 patients

Sleep study including heart rate, breathing, and sleep time 95800

A sleep study monitors your sleep patterns to evaluate your sleep quality. It records your heart rate, breathing, and actual sleep time. This information helps identify any sleep disorders, ensuring you get the rest you need for optimal health.

12 services11 patients

Hospital Affiliations CMS Care Compare 5

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

Northwestern Medicine Mchenry

Acute Care Hospitals · Mchenry, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number140116

Location4201 Medical Center DriveMchenry, IL 60050 · Mc Henry County

Emergency services Birthing friendly

Northwestern Medicine Delnor Community Hospital

Acute Care Hospitals · Geneva, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140211

Location300 Randall RdGeneva, IL 60134 · Kane 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

Northwestern Medicine Kishwaukee Hospital

Acute Care Hospitals · Dekalb, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140286

LocationOne Kish Hospital DriveDekalb, IL 60115 · De Kalb County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60190 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

$137.43 typical visit price

range $59.81 – $181.38

Typical copayment $34.35 (range $14.95 – $45.34)

Most-billed visit code 99204

Established Patient

$105.07 typical visit price

range $19.15 – $147.12

Typical copayment $26.26 (range $4.78 – $36.78)

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

94.1/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored through an Alternative Payment Model

Quality

82.59

Promoting Interoperability

100

Improvement Activities

Referred Medical Equipment & Supplies CMS DME claims 28

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

Tubing with integrated heating element for use with positive airway pressure device A4604

DME-Other DME · category DE001N

13 suppliers256 claims256 services$33.56 avg. paid by Medicare

Full face mask used with positive airway pressure device, each A7030

DME-Other DME · category DE001N

14 suppliers191 claims191 services$70.91 avg. paid by Medicare

Face mask interface, replacement for full face mask, each A7031

DME-Other DME · category DE001N

13 suppliers192 claims554 services$27.15 avg. paid by Medicare

Cushion for use on nasal mask interface, replacement only, each A7032

DME-Other DME · category DE001N

10 suppliers75 claims386 services$14.93 avg. paid by Medicare

Pillow for use on nasal cannula type interface, replacement only, pair A7033

DME-Other DME · category DE001N

9 suppliers36 claims206 services$12.66 avg. paid by Medicare

Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034

DME-Other DME · category DE001N

12 suppliers118 claims118 services$44.53 avg. paid by Medicare

Headgear used with positive airway pressure device A7035

DME-Other DME · category DE001N

16 suppliers175 claims175 services$14.78 avg. paid by Medicare

Tubing used with positive airway pressure device A7037

DME-Other DME · category DE001N

11 suppliers46 claims46 services$10.34 avg. paid by Medicare

Filter, disposable, used with positive airway pressure device A7038

DME-Other DME · category DE001N

16 suppliers291 claims1,662 services$1.67 avg. paid by Medicare

Filter, non disposable, used with positive airway pressure device A7039

DME-Other DME · category DE001N

7 suppliers56 claims56 services$5.05 avg. paid by Medicare

Water chamber for humidifier, used with positive airway pressure device, replacement, each A7046

DME-Other DME · category DE001N

13 suppliers144 claims144 services$10.97 avg. paid by Medicare

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

DME-Oxygen and Supplies · category DC000N

6 suppliers106 claims106 services$14.68 avg. paid by Medicare

Home ventilator, any type, used with non-invasive interface, (e.g., mask, chest shell) E0466

DME-Other DME · category DE005N

2 suppliers20 claims20 services$908.99 avg. paid by Medicare

Respiratory assist device, bi-level pressure capability, without backup rate feature, used with noninvasive interface, e.g., nasal or facial mask (intermittent assist device with continuous positive airway pressure device) E0470

DME-Other DME · category DE001N

3 suppliers47 claims47 services$70.70 avg. paid by Medicare

Respiratory assist device, bi-level pressure capability, with back-up rate feature, used with noninvasive interface, e.g., nasal or facial mask (intermittent assist device with continuous positive airway pressure device) E0471

DME-Other DME · category DE001N

2 suppliers15 claims15 services$165.98 avg. paid by Medicare

High frequency chest wall oscillation system, with full anterior and/or posterior thoracic region receiving simultaneous external oscillation, includes all accessories and supplies, each E0483

DME-Other DME · category DE000N

1 supplier11 claims11 services$835.74 avg. paid by Medicare

Humidifier, heated, used with positive airway pressure device E0562

DME-Other DME · category DE001N

4 suppliers25 claims25 services$117.04 avg. paid by Medicare

Humidifier, heated, used with positive airway pressure device E0562

DME-Other DME · category DE001N

4 suppliers33 claims33 services$9.97 avg. paid by Medicare

Nebulizer, with compressor E0570

DME-Other DME · category DE000N

4 suppliers55 claims55 services$2.98 avg. paid by Medicare

Continuous positive airway pressure (cpap) device E0601

DME-Other DME · category DE001N

10 suppliers189 claims191 services$28.31 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

9 suppliers276 claims276 services$64.51 avg. paid by Medicare

Portable oxygen concentrator, rental E1392

DME-Oxygen and Supplies · category DC002N

6 suppliers145 claims145 services$31.53 avg. paid by Medicare

Arformoterol, inhalation solution, fda approved final product, non-compounded, administered through dme, unit dose form, 15 micrograms J7605

DME-Drugs Administered Through DME · category DG006N

2 suppliers15 claims780 services$4.43 avg. paid by Medicare

Albuterol, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose, 1 mg J7613

DME-Drugs Administered Through DME · category DG006N

13 suppliers38 claims10,205 services$0.03 avg. paid by Medicare

Albuterol, up to 2.5 mg and ipratropium bromide, up to 0.5 mg, fda-approved final product, non-compounded, administered through dme J7620

DME-Drugs Administered Through DME · category DG006N

13 suppliers50 claims8,640 services$0.10 avg. paid by Medicare

Portable gaseous oxygen system, rental; home compressor used to fill portable oxygen cylinders; includes portable containers, regulator, flowmeter, humidifier, cannula or mask, and tubing K0738

DME-Oxygen and Supplies · category DC000N

2 suppliers40 claims40 services$31.06 avg. paid by Medicare

Pharmacy dispensing fee for inhalation drug(s); per 30 days Q0513

DME-Other DME · category DE000N

17 suppliers75 claims75 services$23.25 avg. paid by Medicare

Pharmacy dispensing fee for inhalation drug(s); per 90 days Q0514

DME-Other DME · category DE000N

7 suppliers15 claims15 services$52.38 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 8

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

JOYCE L. SMITH APN

Nurse Practitioner

25 N WINFIELD RD STE 204
WINFIELD, IL 60190

Dupage County (630) 232-0202

STEVEN D PEARSON JR. M.D.

Internal Medicine (Pulmonary Disease)

25 N WINFIELD RD STE 204
WINFIELD, IL 60190

Dupage County (630) 232-0202

DR. NIMRA E ALVI MD

Pediatrics (Sleep Medicine)

25 N WINFIELD RD STE 204
WINFIELD, IL 60190

Dupage County (630) 232-0202

DAVID DELAPP DO

Internal Medicine (Pulmonary Disease)

25 N WINFIELD RD STE 204
WINFIELD, IL 60190

Dupage County (630) 232-0202

AMANDA M LAW APRN, CNP

Nurse Practitioner

25 N WINFIELD RD STE 204
WINFIELD, IL 60190

Dupage County (630) 232-0202

REETI GREENWALD MD

Psychiatry & Neurology (Sleep Medicine)

25 N WINFIELD RD STE 204
WINFIELD, IL 60190

Dupage County (630) 232-0202

MAHWISH H SAIM M.D.

Internal Medicine (Pulmonary Disease)

25 N WINFIELD RD STE 204
WINFIELD, IL 60190

Dupage County (630) 232-0202

DR. BENJAMIN JASON SEIDES MD, MPH

Internal Medicine (Pulmonary Disease)

25 N WINFIELD RD STE 204
WINFIELD, IL 60190

Dupage County (630) 232-0202

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 Linda Chan's NPI number?

The NPI number for Linda Chan is 1235187253. It was assigned to this individual provider in the NPPES registry on May 4, 2006.

Where is Linda Chan located?

Linda Chan practices at 25 N Winfield Rd Ste 204, Winfield, IL 60190. The listed phone number is (630) 232-0202.

What is Linda Chan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

Is Linda Chan enrolled in Medicare?

Yes. Linda Chan 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.

Which organization bills Medicare for Linda Chan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Linda Chan reassigns Medicare benefits to Central Dupage Physician Group (Carol Stream, IL). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Linda Chan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Linda Chan affiliated with any hospitals?

According to CMS data, Linda Chan is affiliated with Northwestern Medicine Mchenry, Northwestern Medicine Delnor Community Hospital, Northwestern Medicine Central Dupage Hospital, Northwestern Memorial Hospital and Northwestern Medicine Kishwaukee Hospital.

When was this NPI record last updated?

The NPPES record for Linda Chan was last updated on October 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 days 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.