DR. MARILYN JEAN BULL (M.D.) – Developmental - Behavioral Pediatrics Physician, NPI 1801871975

DR. MARILYN JEAN BULL (M.D.) is a healthcare provider. based in Chicago, Illinois. specializing in Developmental - Behavioral Pediatrics Physician. They hold the professional credentials M.D.. They hold a License No. 01027222A (IN). The NPI Number for DR. MARILYN JEAN BULL (M.D.) is 1801871975

Main info

Female
Name
DR. MARILYN JEAN BULL (M.D.)
NPI
1801871975
Phone
(317) 777-6435
Address
PO BOX 719094
Enumeration Date
13 December 2005
Last Update Date
13 February 2026

Contacts

Secure Messaging
mbull@direct.iuhealth.org
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience73
Completeness95
Years active:20State licenses:2Other names

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Provider Addresses for DR. MARILYN JEAN BULL (M.D.)

  • PO BOX 719094

    CHICAGO, IL 606779318

    Phone: (317) 777-6435

    Fax: (317) 777-6644

    Type: Mailing

  • Riley Hospital for Children, 705, Riley Hospital Drive, Indianapolis, Marion, Indiana, 46202, United States

    RI 1601

    INDIANAPOLIS, IN 462025109

    Phone: (317) 274-4842

    Fax: (317) 278-0126

    Type: Location

  • Indianapolis, Marion County, Indiana, United States

    INDIANAPOLIS, IN 462061026

    Phone: (317) 777-6435

    Fax: (317) 777-6644

    Type: Mailing

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2004-12-08

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20041208001119IMedical Genetics And GenomicsINTBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 60677)

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Reviews

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Frequently asked questions

Where can patients find DR. MARILYN JEAN BULL (M.D.)'s NPI?
You can confirm DR. MARILYN JEAN BULL (M.D.) with NPI 1801871975; it appears in the national provider directory.
Is DR. MARILYN JEAN BULL (M.D.) active in the national directory?
DR. MARILYN JEAN BULL (M.D.)'s public NPI profile is in an active state.
Can you summarize DR. MARILYN JEAN BULL (M.D.)'s specialty in plain language?
Clinically, the directory lists DR. MARILYN JEAN BULL (M.D.) with Developmental - Behavioral Pediatrics Physician. Clinical services aligned with this taxonomy classification.
Does DR. MARILYN JEAN BULL (M.D.) practice in Illinois?
You will see Chicago, Illinois on file for DR. MARILYN JEAN BULL (M.D.) alongside any extra practice locations.
Is DR. MARILYN JEAN BULL (M.D.) a real provider?
This page reflects official NPPES data for NPI 1801871975. Always confirm identity and privileges with the practice and licensing boards.

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