CHARLOTTE HAERAN KOO MD
NPI 1093158297
Hospitalist in Glenview, IL

Q: What is Charlotte Koo's NPI number?

The NPI number for Charlotte Koo is 1093158297. It was assigned to this individual provider in the NPPES registry on April 8, 2013.

Q: What is Charlotte Koo's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Q: When was this NPI record last updated?

The NPPES record for Charlotte Koo was last updated on June 25, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.

Active since April 08, 2013PECOS EnrolledAccepts Medicare Assignment

2100 PFINGSTEN RD STE 3001A, GLENVIEW, IL 60026(847) 657-5840(847) 657-5732 Get Directions Write a Review

NPPES record last updated: June 25, 2019. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 13, 2019, Nov 5, 2018 (2 updates tracked since 2018).

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About Charlotte Haeran Koo Md NPPES

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

CHARLOTTE HAERAN KOO MD (NPI 1093158297) is an individual hospitalist provider in Glenview, Illinois, licensed in Illinois (036139709) and active in the NPI registry since April 2013. She is enrolled in Medicare PECOS and is a graduate of Other (2013).

NPPES Registry Identity

NPI1093158297

Entity TypeIndividualFemale

Primary Taxonomy208M00000X

Provider Legal NameCHARLOTTE HAERAN KOOCredential: MD

Location Address2100 PFINGSTEN RD STE 3001AGlenview, IL 60026-1301

Mailing Address1425 N Randall RdElgin, IL 60123-2300 · (224) 783-2525 · Fax (224) 783-2527

Phone(847) 657-5840

Fax(847) 657-5732

Sole ProprietorNo

Medical School CMSOtherGraduated 2013

Enumeration DateApril 8, 2013

Last NPPES UpdateJune 25, 20192 updates tracked since enumeration

✔ NPI 1093158297 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians

Taxonomy Code208M00000X

License✔ Licensed in IL · 036139709

Definition

Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

Also ListedInternal MedicineTaxonomy 207R00000X · License 036139709 (IL)

2100 PFINGSTEN RD STE 3001A, Glenview, IL 60026

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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

Charlotte Haeran Koo 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 ID6204065915

PECOS Enrollment IDI20211220001658

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 Reassignments

Medicare enrollment records show Charlotte Koo reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Banner Physician Specialists Arizona LLC

1,306 mi

Multi-Specialty

601 N NAVAJO
Page, AZ 86040

Reassigned Medicare billing, Arizona enrollment
Medicare enrollment name: Banner Hospital Based Physicians Arizona LLC
1,081 clinicians in this Medicare group

NPI 1366799355 (928) 645-0131

Banner Cancer Center Specialists LLC

1,382 mi

Oncology

807 S PONDEROSA ST
Payson, AZ 85541

Reassigned Medicare billing, Arizona enrollment
470 clinicians in this Medicare group

NPI 1588158448 (928) 471-3222

Arizona Post Acute Care Specialists LLC

1,430 mi

Internal Medicine

4022 E PRESIDIO ST
Mesa, AZ 85215

Reassigned Medicare billing, Arizona enrollment
24 clinicians in this Medicare group

NPI 1669246070 (480) 985-1093

Lifeline Hospitalist Associates LLC

1,436 mi

Internal Medicine

255 W BROWN RD
Mesa, AZ 85201

Reassigned Medicare billing, Arizona enrollment
41 clinicians in this Medicare group

NPI 1265107478 (480) 985-1093

Banner - University Hospital Based Physicians LLC

1,446 mi

General Acute Care Hospital

2901 N CENTRAL AVE STE 160
Phoenix, AZ 85012

Reassigned Medicare billing, Arizona enrollment
728 clinicians in this Medicare group

NPI 1750751566 (602) 747-4000

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 5

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.

208 services118 patients

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.

131 services76 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.

129 services125 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

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.

14 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60026 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 suppliers23 claims24 services$13.75 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 claims27 services$60.31 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.

KAREN CHIU MD

Hospitalist