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MARY ELIZABETH HALLBERG NULL MD
NPI 1255824280
Medical Genetics - Clinical Genetics (M.D.) in Omaha, NE

Active since June 13, 2018PECOS Enrolled
982185 NEBRASKA MEDICAL CTR, OMAHA, NE 68198(402) 559-4186 Get Directions Write a Review

NPPES record last updated: June 29, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 6, 2026, Jun 13, 2018 (2 updates tracked since 2018).

About Mary Elizabeth Hallberg Null Md NPPES

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

MARY ELIZABETH HALLBERG NULL MD (NPI 1255824280) is an individual clinical genetics (m.d.) provider in Omaha, Nebraska, licensed in Nebraska (33661) and active in the NPI registry since June 2018. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1255824280
Entity TypeIndividualFemale
Primary Taxonomy207SG0201X
Provider Legal NameMARY ELIZABETH HALLBERG NULLCredential: MD
Location Address982185 NEBRASKA MEDICAL CTROmaha, NE 68198-2185
Mailing Address982185 Nebraska Medical CtrOmaha, NE 68198-2185
Phone(402) 559-4186
Sole ProprietorNo
Enumeration DateJune 13, 2018
Last NPPES UpdateJune 29, 20262 updates tracked since enumeration
NPPES CertifiedJune 29, 2026
✔ NPI 1255824280 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyMedical Genetics · Clinical Genetics (M.D.)Allopathic & Osteopathic Physicians
Taxonomy Code207SG0201X
License✔ Licensed in NE · 33661
Definition
A clinical geneticist demonstrates competence in providing comprehensive diagnostic, management and counseling services for genetic disorders.
982185 NEBRASKA MEDICAL CTR, Omaha, NE 68198
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Sunflower Health Plan, Ambetter Health, Ambetter Health of Delaware and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mary Elizabeth Hallberg Null Md 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 Reassignment

Medicare enrollment records show Mary Elizabeth Null reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Unmc Physicians
1.9 mi
Multi-Specialty
988102 NEBRASKA MEDICAL CTR
Omaha, NE 68198
  • Reassigned Medicare billing, Nebraska enrollment
  • 2,154 clinicians in this Medicare group
NPI 1417912114 (402) 552-3739

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

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.

ROSE ELIZABETH MCCOY MD
Pediatrics
982185 NEBRASKA MEDICAL CTR
OMAHA, NE 68198
Douglas County (402) 559-5380
TRAVIS SCHREIER
Pediatrics
982185 NEBRASKA MEDICAL CTR
OMAHA, NE 68198
Douglas County (402) 559-5380
TREVOR LOCKARD MD
Pediatrics
982185 NEBRASKA MEDICAL CTR
OMAHA, NE 68198
Douglas County (402) 559-5380
BRYLEE MAE YIRKOVSKY DO
Pediatrics
982185 NEBRASKA MEDICAL CTR
OMAHA, NE 68198
Douglas County (402) 559-5380
AYUSHI KAUL MD
Student in an Organized Health Care Education/Training Program
982185 NEBRASKA MEDICAL CTR
OMAHA, NE 68198
Douglas County (402) 559-5380
DR. TAMARA THEVARAJAH DO, MS
Student in an Organized Health Care Education/Training Program
982185 NEBRASKA MEDICAL CTR
OMAHA, NE 68198
Douglas County (402) 559-5380
TESSA PUNTENEY DO
Pediatrics
982185 NEBRASKA MEDICAL CTR
OMAHA, NE 68198
Douglas County (402) 559-5380
MRS. WHITNEY LYNN BOSSERT M.D.
Pediatrics
982185 NEBRASKA MEDICAL CTR
OMAHA, NE 68198
Douglas County (402) 559-5380

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 Elizabeth Null's NPI number?

The NPI number for Mary Elizabeth Null is 1255824280. It was assigned to this individual provider in the NPPES registry on June 13, 2018.

Where is Mary Elizabeth Null located?

Mary Elizabeth Null practices at 982185 Nebraska Medical Ctr, Omaha, NE 68198. The listed phone number is (402) 559-4186.

What is Mary Elizabeth Null's specialty?

The primary specialty registered for this NPI is Medical Genetics, specializing in Clinical Genetics (M.D.), with taxonomy code 207SG0201X.

Is Mary Elizabeth Null enrolled in Medicare?

Yes. Mary Elizabeth Null is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mary Elizabeth Null's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Elizabeth Null reassigns Medicare benefits to Unmc Physicians (Omaha, NE). The 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 Elizabeth Null's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mary Elizabeth Null accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Sunflower Health Plan, Blue Cross and Blue Shield of Nebraska and Oscar Insurance Company and 1 other insurer list Mary Elizabeth Null 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.

When was this NPI record last updated?

The NPPES record for Mary Elizabeth Null was last updated on June 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.