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JULIA L BIELAT M.D.
NPI 1477689081
Family Medicine in Aurora, IL

Active since February 26, 2007PECOS EnrolledAccepts Medicare Assignment
94.1/100
CMS Quality Rating
2635 CHURCH RD STE 201, AURORA, IL 60502(630) 315-8700(630) 315-8777 Get Directions Write a Review

NPPES record last updated: July 9, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 9, 2026, Jan 9, 2020 (2 updates tracked since 2020).

About Julia L Bielat M.d. NPPES

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

JULIA L BIELAT M.D. (NPI 1477689081) is an individual family medicine provider in Aurora, Illinois, licensed in Illinois (036108044) and active in the NPI registry since February 2007. She is enrolled in Medicare PECOS, is affiliated with Northwestern Medicine Delnor Community Hospital, and maintains a secondary practice location in Geneva.

NPPES Registry Identity

NPI1477689081
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameJULIA L BIELATCredential: M.D.
Location Address2635 CHURCH RD STE 201Aurora, IL 60502-8943
Mailing Address2635 Church Rd Ste 201Aurora, IL 60502-8943 · (630) 315-8700 · Fax (630) 315-8777
Phone(630) 315-8700
Fax(630) 315-8777
Sole ProprietorNo
Medical School CMSUniversity Of Illinois College Of Med (chi/peor/rock/chm-urb)Graduated 1999
Enumeration DateFebruary 26, 2007
Last NPPES UpdateJuly 9, 20262 updates tracked since enumeration
NPPES CertifiedJuly 9, 2026
✔ NPI 1477689081 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in IL · 036108044
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
2635 CHURCH RD STE 201, Aurora, IL 60502
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Other Names 1

Former Name (1)Julia L Castillo M.d.

Secondary Practice Location 1

Location 1302 Randall Rd Ste 306Geneva, IL 60134-4205 · Phone (630) 938-8930 · Fax (630) 938-8931

Other Identifiers 4

Medicaid036108044IL
Other920540021IL · Medicare Ptan (individual)
OtherP01137348IL · Railroad Medicare (provider Ptan)
Other920540IL · Medicare Ptan (group)

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

Julia L Bielat 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 ID3173591757
PECOS Enrollment IDI20040921001104
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

3

Medicare enrollment records show Julia Bielat reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Central Dupage Hospital Association
7.8 mi
General Acute Care Hospital
25 NORTH WINFIELD RD.
Winfield, IL 60190
  • Reassigned Medicare billing, Illinois enrollment
  • 129 clinicians in this Medicare group
NPI 1003864810 (630) 933-1600
Central Dupage Physician Group
10 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
Northwestern Medical Faculty Foundation
16 mi
Multi-Specialty
DEPT 5777
Carol Stream, IL 60122
  • Reassigned Medicare billing, Illinois enrollment
  • 4,817 clinicians in this Medicare group
NPI 1346235314 (855) 694-2866

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 8

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.
187 services143 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
128 services128 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.
116 services92 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.
27 services27 patients
Influenza vaccine split virus, preservative free 90662
The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.
25 services25 patients
Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment G0402
An Initial Preventive Physical Examination, also known as a "Welcome to Medicare" visit, is a one-time, face-to-face visit during your first 12 months of Medicare enrollment. It includes a review of your health, as well as education and counseling about preventive services and further screenings.
14 services14 patients

Hospital Affiliations CMS Care Compare 4

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

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 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

Valley West Community Hospital

Critical Access Hospitals · Sandwich, IL
OwnershipVoluntary non-profit - Private
CMS Certification Number141340
Location1301 North Main StreetSandwich, IL 60548 · De Kalb County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60502 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
$93.02 typical visit price
range $59.81 – $181.38
Typical copayment $23.25 (range $14.95 – $45.34)
Most-billed visit code 99203
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
Quality82.59
Promoting Interoperability100
Improvement Activities40

Referred Medical Equipment & Supplies CMS DME claims 5

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
8 suppliers18 claims32 services$5.77 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
8 suppliers13 claims15 services$0.99 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
2 suppliers12 claims12 services$12.36 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
3 suppliers24 claims24 services$68.28 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
2 suppliers21 claims21 services$185.08 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Julia Bielat's NPI number?

The NPI number for Julia Bielat is 1477689081. It was assigned to this individual provider in the NPPES registry on February 26, 2007. The provider is also known as Julia L Castillo M.D..

Where is Julia Bielat located?

Julia Bielat practices at 2635 Church Rd Ste 201, Aurora, IL 60502. The listed phone number is (630) 315-8700.

What is Julia Bielat's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Julia Bielat enrolled in Medicare?

Yes. Julia Bielat 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 organizations bill Medicare for Julia Bielat's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Julia Bielat reassigns Medicare benefits to 3 organizations: Central Dupage Hospital Association (Winfield, IL), Central Dupage Physician Group (Carol Stream, IL) and Northwestern Medical Faculty Foundation (Carol Stream, IL). Each 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 Julia Bielat's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Julia Bielat affiliated with any hospitals?

According to CMS data, Julia Bielat is affiliated with Northwestern Medicine Delnor Community Hospital, Northwestern Medicine Central Dupage Hospital, Northwestern Medicine Kishwaukee Hospital and Valley West Community Hospital.

When was this NPI record last updated?

The NPPES record for Julia Bielat was last updated on July 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.