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MARY SHIELLAH BLANCAFLOR JAMES N.P.
NPI 1639415979
Nurse Practitioner - Family in Downers Grove, IL

Active since December 13, 2012PECOS EnrolledAccepts Medicare Assignment
3825 HIGHLAND AVE FL 4, DOWNERS GROVE, IL 60515(630) 719-4799(630) 963-7420 Get Directions Write a Review

NPPES record last updated: August 5, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Aug 5, 2025, Jun 25, 2020, Mar 24, 2017 (3 updates tracked since 2017).

About Mary Shiellah Blancaflor James N.p. NPPES

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

MARY SHIELLAH BLANCAFLOR JAMES N.P. (NPI 1639415979) is an individual family provider in Downers Grove, Illinois, licensed in Illinois (277.000750) and active in the NPI registry since December 2012. She is enrolled in Medicare PECOS, is affiliated with Advocate Illinois Masonic Medical Center, and maintains a secondary practice location in Tinley Park.

NPPES Registry Identity

NPI1639415979
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameMARY SHIELLAH BLANCAFLOR JAMESCredential: N.P.
Location Address3825 HIGHLAND AVE FL 4Downers Grove, IL 60515-1552
Mailing Address29373 Network PlChicago, IL 60673-1293 · (847) 390-5900
Phone(630) 719-4799
Fax(630) 963-7420
Sole ProprietorNo
Medical School CMSOtherGraduated 2012
Enumeration DateDecember 13, 2012
Last NPPES UpdateAugust 5, 20253 updates tracked since enumeration
NPPES CertifiedAugust 5, 2025
✔ NPI 1639415979 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
Licenses✔ Licensed in IL · 277.000750✔ Licensed in IN · 28227760A
3825 HIGHLAND AVE FL 4, Downers Grove, IL 60515
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Other Names 1

Other Name (5)Shiellah Blancaflor James N.p.

Secondary Practice Location 1

Location 16700 167th St Ste 4Tinley Park, IL 60477-2078 · Phone (708) 429-3700 · Fax (708) 429-4460

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware, Oscar Health.Insurance ›

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

Mary Shiellah Blancaflor James N.p. 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 ID2163667973
PECOS Enrollment IDI20130327000544
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

4

Medicare enrollment records show Mary Shiellah James reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Advocate Health And Hospitals Corporation
Same address
Cardiovascular Disease
3825 HIGHLAND AVE, TOWER 2 SUITE 400
Downers Grove, IL 60515
  • Reassigned Medicare billing, Illinois enrollment
  • 4,870 clinicians in this Medicare group
NPI 1285903849 (630) 719-4799
Dupage Medical Group Ltd
1.0 mi
Multi-Specialty
1100 W 31ST ST, STE 300
Downers Grove, IL 60515
  • Reassigned Medicare billing, Illinois enrollment
  • 184 clinicians in this Medicare group
NPI 1801833983 (630) 469-9200
Serene Health
19 mi
Mental Health (Including Community Mental Health Center)
16335 HARLEM AVE STE 300
Tinley Park, IL 60477
  • Reassigned Medicare billing, Illinois enrollment
  • 14 clinicians in this Medicare group
NPI 1265182992 (773) 598-8723
Asad Zaman MD Sc
20 mi
Internal Medicine
6700 167TH ST, SUITE 4
Tinley Park, IL 60477
  • Reassigned Medicare billing, Illinois enrollment
  • 22 clinicians in this Medicare group
NPI 1356393557 (708) 429-3700

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

Hospital Affiliations CMS Care Compare 2

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

Advocate Illinois Masonic Medical Center

Acute Care Hospitals · Chicago, IL
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140182
Location836 West Wellington AvenueChicago, IL 60657 · Cook County
Emergency services Birthing friendly

Advocate Good Samaritan Hospital

Acute Care Hospitals · Downers Grove, IL
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140288
Location3815 Highland AvenueDowners Grove, IL 60515 · Du Page County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60515 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.

Other Providers at the Same Location NPPES

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

TAIYLOR TAGLIERE
Nurse Practitioner
3825 HIGHLAND AVE FL 4
DOWNERS GROVE, IL 60515
Dupage County (630) 719-4799

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 Mary Shiellah James's NPI number?

The NPI number for Mary Shiellah James is 1639415979. It was assigned to this individual provider in the NPPES registry on December 13, 2012. The provider is also known as Shiellah Blancaflor James N.P..

Where is Mary Shiellah James located?

Mary Shiellah James practices at 3825 Highland Ave Fl 4, Downers Grove, IL 60515. The listed phone number is (630) 719-4799.

What is Mary Shiellah James's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Mary Shiellah James enrolled in Medicare?

Yes. Mary Shiellah James 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 Mary Shiellah James's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Shiellah James reassigns Medicare benefits to 4 organizations: Advocate Health And Hospitals Corporation (Downers Grove, IL), Dupage Medical Group Ltd (Downers Grove, IL), Serene Health (Tinley Park, IL) and Asad Zaman MD Sc (Tinley Park, 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 Mary Shiellah James's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mary Shiellah James accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Oscar Health list Mary Shiellah James as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Mary Shiellah James affiliated with any hospitals?

According to CMS data, Mary Shiellah James is affiliated with Advocate Illinois Masonic Medical Center and Advocate Good Samaritan Hospital.

When was this NPI record last updated?

The NPPES record for Mary Shiellah James was last updated on August 5, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.