KATIE O'SULLIVAN
NPI 1902038094
Internal Medicine - Endocrinology, Diabetes & Metabolism in Chicago, IL

Q: What is Katie O'sullivan's NPI number?

The NPI number for Katie O'sullivan is 1902038094. It was assigned to this individual provider in the NPPES registry on August 22, 2009.

Q: What is Katie O'sullivan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Q: When was this NPI record last updated?

The NPPES record for Katie O'sullivan was last updated on October 24, 2022. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since August 22, 2009PECOS EnrolledAccepts Medicare Assignment

97.71/100

CMS Quality Rating

5841 S MARYLAND AVE, CHICAGO, IL 60637(888) 824-0200 Get Directions Write a Review

NPPES record last updated: October 24, 2022. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Oct 24, 2022, May 19, 2022, Apr 18, 2022 and 3 more (6 updates tracked since 2017).

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About Katie O'sullivan NPPES

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

KATIE O'SULLIVAN (NPI 1902038094) is an individual endocrinology, diabetes & metabolism provider in Chicago, Illinois, licensed in Illinois (036132084) and active in the NPI registry since August 2009. She is enrolled in Medicare PECOS, is affiliated with The University Of Chicago Medical Center, and is a graduate of Loyola University Of Chicago, Stritch School Of Medicine (2009).

NPPES Registry Identity

NPI1902038094

Entity TypeIndividualFemale

Primary Taxonomy207RE0101X

Provider Legal NameKATIE O'SULLIVAN

Location Address5841 S MARYLAND AVEChicago, IL 60637-1443

Mailing Address150 Harvester Dr, Suite 300Burr Ridge, IL 60527-5919

Phone(888) 824-0200

Sole ProprietorNo

Medical School CMSLoyola University Of Chicago, Stritch School Of MedicineGraduated 2009

Enumeration DateAugust 22, 2009

Last NPPES UpdateOctober 24, 20226 updates tracked since enumeration

✔ NPI 1902038094 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians

Taxonomy Code207RE0101X

License✔ Licensed in IL · 036132084

Definition

An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

5841 S MARYLAND AVE, Chicago, IL 60637

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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

Katie O'sullivan 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 ID2163725136

PECOS Enrollment IDI20170919002572, I20240731004084

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 6

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 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.

125 services98 patients

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

86 services60 patients

Blood glucose (sugar) test performed by hand-held instrument 82962

A blood glucose test uses a handheld device to measure the amount of sugar in your blood. A small prick on your finger allows a drop of blood to be placed on a test strip, which is then read by the device. This helps monitor and manage diabetes effectively.

67 services51 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

57 services53 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.

20 services20 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

11 services11 patients

Hospital Affiliations CMS Care Compare 4

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

The University Of Chicago Medical Center

Acute Care Hospitals · Chicago, IL

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140088

Location5841 South MarylandChicago, IL 60637 · Cook County

Emergency services Birthing friendly

Ingalls Memorial Hospital

Acute Care Hospitals · Harvey, IL

2/5 CMS rating

OwnershipPhysician

CMS Certification Number140191

Location1 Ingalls DriveHarvey, IL 60426 · Cook County

Emergency services Birthing friendly

St Mary Medical Center Inc

Acute Care Hospitals · Hobart, IN

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number150034

Location1500 S Lake Park AveHobart, IN 46342 · Lake County

Emergency services Birthing friendly

Community Hospital

Acute Care Hospitals · Munster, IN

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number150125

Location901 Macarthur BlvdMunster, IN 46321 · Lake County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60637 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.

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.

97.71/100

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

Scored through an Alternative Payment Model

Quality

75.43

Promoting Interoperability

100

Improvement Activities

Referred Medical Equipment & Supplies CMS DME claims 3

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

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

18 suppliers34 claims118 services$6.41 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

8 suppliers14 claims30 services$1.04 avg. paid by Medicare

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553

DME-Other DME · category DE017N

15 suppliers332 claims332 services$184.88 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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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. DON MARTINEZ M.D.

Radiology (Diagnostic Radiology)