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ABIGAIL R LITWILLER M.D.
NPI 1295993012
Obstetrics & Gynecology in Chicago, IL

Active since May 29, 2008PECOS Enrolled
820 S WOOD ST # MC808, CHICAGO, IL 60612(312) 996-7430 Get Directions Write a Review

NPPES record last updated: June 2, 2016. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Abigail R Litwiller M.d. NPPES

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

ABIGAIL R LITWILLER M.D. (NPI 1295993012) is an individual obstetrics & gynecology provider in Chicago, Illinois, licensed in Indiana (01064936A) and active in the NPI registry since May 2008. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1295993012
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameABIGAIL R LITWILLERCredential: M.D.
Location Address820 S WOOD ST # MC808Chicago, IL 60612-4325
Mailing Address820 S Wood St # Mc808Chicago, IL 60612-4325 · (312) 996-7430
Phone(312) 996-7430
Sole ProprietorNo
Enumeration DateMay 29, 2008
Last NPPES UpdateJune 2, 2016
✔ NPI 1295993012 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in IN · 01064936A
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
820 S WOOD ST # MC808, Chicago, IL 60612
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Other Identifiers 2

Medicaid200924660IN
Medicare PINPENDING

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Abigail R Litwiller M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Abigail Litwiller reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

The Board Of Trustees Of The University Of Illinois
37 mi
Primary Care
3656 N HALSTED ST
Chicago, IL 60613
  • Reassigned Medicare billing, Illinois enrollment
  • Also billed through NPI 1154541936 (Illinois)
  • 2,127 clinicians in this Medicare group
NPI 1588815401 (734) 726-4697
County Of Santa Clara
1,803 mi
Federally Qualified Health Center (FQHC)
7475 CAMINO ARROYO
Gilroy, CA 95020
  • Reassigned Medicare billing, California enrollment
  • Also billed through NPI 1629301346 (California), NPI 1043354020 (California)
  • 2,460 clinicians in this Medicare group
NPI 1922093533 (408) 885-5000

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 60612 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
$74.80 typical visit price
range $18.97 – $148.12
Typical copayment $18.70 (range $4.74 – $37.03)
Most-billed visit code 99213
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 9

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

OLIVIA AGATA WALKOWIAK
Student in an Organized Health Care Education/Training Program
820 S WOOD ST # MC808
CHICAGO, IL 60612
Cook County (312) 996-4472
ANDRAS LADANYI M.D., PH.D.
Obstetrics & Gynecology (Gynecologic Oncology)
820 S WOOD ST # MC808, UNIVERSITY OF ILLINOIS OBSTETRICS AND GYNECOLOGY
CHICAGO, IL 60612
Cook County (312) 996-7006
KARYN ELIZABETH MORGAN
Nurse Practitioner
820 S WOOD ST # MC808
CHICAGO, IL 60612
Cook County (312) 996-5994
LENSA TOKA MD
Student in an Organized Health Care Education/Training Program
820 S WOOD ST # MC808
CHICAGO, IL 60612
Cook County (312) 996-4224
JOSEPH M MAURICE M.D.
Obstetrics & Gynecology
820 S WOOD ST # MC808
CHICAGO, IL 60612
Cook County (312) 996-7006
JOCELYN RAY MD, PHD
Obstetrics & Gynecology (Gynecologic Oncology)
820 S WOOD ST # MC808
CHICAGO, IL 60612
Cook County (407) 580-7578
DAWNE JULIA COLLIER M.D.
Obstetrics & Gynecology
820 S WOOD ST # MC808
CHICAGO, IL 60612
Cook County (312) 996-7430
KATIE LOUISE WALKER APRN CNM DNP
Advanced Practice Midwife
820 S WOOD ST # MC808
CHICAGO, IL 60612
Cook County (312) 996-0533

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 Abigail Litwiller's NPI number?

The NPI number for Abigail Litwiller is 1295993012. It was assigned to this individual provider in the NPPES registry on May 29, 2008.

Where is Abigail Litwiller located?

Abigail Litwiller practices at 820 S Wood St # Mc808, Chicago, IL 60612. The listed phone number is (312) 996-7430.

What is Abigail Litwiller's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Abigail Litwiller enrolled in Medicare?

Yes. Abigail Litwiller is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Abigail Litwiller's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Abigail Litwiller reassigns Medicare benefits to 2 organizations: The Board Of Trustees Of The University Of Illinois (Chicago, IL) and County Of Santa Clara (Gilroy, CA). 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 Abigail Litwiller'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 Abigail Litwiller was last updated on June 2, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 years 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.