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SIERRA ROSE BLASHOCK MD
NPI 1033807680
Pediatrics in Chicago, IL

Active since May 01, 2023PECOS Enrolled
5841 S MARYLAND AVE # MC8016, CHICAGO, IL 60637(773) 702-6435 Get Directions Write a Review

NPPES record last updated: August 5, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 5, 2026, May 5, 2023 (2 updates tracked since 2023).

About Sierra Rose Blashock Md NPPES

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

SIERRA ROSE BLASHOCK MD (NPI 1033807680) is an individual pediatrics provider in Chicago, Illinois, licensed in Illinois (036180908) and active in the NPI registry since May 2023. She is enrolled in Medicare PECOS and is a graduate of University Of Florida College Of Medicine (2023).

NPPES Registry Identity

NPI1033807680
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameSIERRA ROSE BLASHOCKCredential: MD
Location Address5841 S MARYLAND AVE # MC8016Chicago, IL 60637-1443
Mailing Address150 Harvester Dr Ste 300Burr Ridge, IL 60527-5965
Phone(773) 702-6435
Sole ProprietorNo
Medical School CMSUniversity Of Florida College Of MedicineGraduated 2023
Enumeration DateMay 1, 2023
Last NPPES UpdateAugust 5, 20262 updates tracked since enumeration
NPPES CertifiedAugust 5, 2026
✔ NPI 1033807680 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in IL · 036180908
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
5841 S MARYLAND AVE # MC8016, Chicago, IL 60637
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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 (PECOS)

Sierra Rose Blashock Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID8729447644
PECOS Enrollment IDI20260820002706
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

2

Medicare enrollment records show Sierra Blashock reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

The University Of Chicago Medical Center
Same address
General Acute Care Hospital
5841 S MARYLAND AVE
Chicago, IL 60637
  • Reassigned Medicare billing, Illinois enrollment
  • 1,905 clinicians in this Medicare group
NPI 1033218128 (773) 702-1530
University Of Chicago
Same address
Multi-Specialty
5841 S MARYLAND AVE, UCPG/MC 1099
Chicago, IL 60637
  • Reassigned Medicare billing, Illinois enrollment
  • 2,237 clinicians in this Medicare group
NPI 1821048786 (773) 702-9200

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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
$94.06 typical visit price
range $60.08 – $183.39
Typical copayment $23.51 (range $15.02 – $45.84)
Most-billed visit code 99203
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 20

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

MAHI KAUR SINGH MD
Student in an Organized Health Care Education/Training Program
5841 S MARYLAND AVE # MC8016
CHICAGO, IL 60637
Cook County (773) 702-1000
ANNA PERRY MD
Pediatrics
5841 S MARYLAND AVE # MC8016
CHICAGO, IL 60637
Cook County (773) 702-1000
DR. PAREENAZ BEHBAHANI-NEJAD MD
Pediatrics
5841 S MARYLAND AVE # MC8016
CHICAGO, IL 60637
Cook County (773) 702-1000
CAROLINE MARIE GOELLER
Pediatrics
5841 S MARYLAND AVE # MC8016
CHICAGO, IL 60637
Cook County (773) 702-1000
PRIYA KARKHANIS
Pediatrics
5841 S MARYLAND AVE # MC8016
CHICAGO, IL 60637
Cook County (773) 702-1000
BOGDAN POPESCU MD, PHD
Pediatrics
5841 S MARYLAND AVE # MC8016
CHICAGO, IL 60637
Cook County (773) 702-1000
ALLYSON SEGALL
Student in an Organized Health Care Education/Training Program
5841 S MARYLAND AVE # MC8016
CHICAGO, IL 60637
Cook County (773) 702-1000
ANDREW JOHNSON M.D.
Pediatrics
5841 S MARYLAND AVE # MC8016
CHICAGO, IL 60637
Cook County (773) 702-6435

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 Sierra Blashock's NPI number?

The NPI number for Sierra Blashock is 1033807680. It was assigned to this individual provider in the NPPES registry on May 1, 2023.

Where is Sierra Blashock located?

Sierra Blashock practices at 5841 S Maryland Ave # Mc8016, Chicago, IL 60637. The listed phone number is (773) 702-6435.

What is Sierra Blashock's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Sierra Blashock enrolled in Medicare?

Yes. Sierra Blashock is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Sierra Blashock's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sierra Blashock reassigns Medicare benefits to 2 organizations: The University Of Chicago Medical Center (Chicago, IL) and University Of Chicago (Chicago, 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 Sierra Blashock's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Sierra Blashock was last updated on August 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.