ALLISON Q GRENNAN PHD
NPI 1295013175
Psychologist in Omaha, NE

Active since July 27, 2011PECOS EnrolledAccepts Medicare Assignment
444 S 44TH ST, OMAHA, NE 68131(402) 559-6408(402) 559-5737 Get Directions Write a Review

NPPES record last updated: November 4, 2014. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Allison Q Grennan Phd NPPES

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

ALLISON Q GRENNAN PHD (NPI 1295013175) is an individual psychologist in Omaha, Nebraska, licensed in Nebraska (840) and active in the NPI registry since July 2011. She is enrolled in Medicare PECOS and is a graduate of Other (2012).

NPPES Registry Identity

NPI1295013175
Entity TypeIndividualFemale
Primary Taxonomy103T00000X
Provider Legal NameALLISON Q GRENNANCredential: PHD
Location Address444 S 44TH STOmaha, NE 68131-3727
Mailing Address988102 Nebraska Medical CtrOmaha, NE 68198-8102 · (402) 559-6408 · Fax (402) 559-5737
Fax(402) 559-5737
Sole ProprietorNo
Medical School CMSOtherGraduated 2012
Enumeration DateJuly 27, 2011
Last NPPES UpdateNovember 4, 2014
✔ NPI 1295013175 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
License✔ Licensed in NE · 840
Definition
A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.
Also ListedCounselor · Mental HealthTaxonomy 101YM0800X · License 4111 (NE)
444 S 44TH ST, Omaha, NE 68131

Other Identifiers 1

Other444NE · Ne State License

Accepted 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

Allison Q Grennan Phd 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 ID6002045614
PECOS Enrollment IDI20140130001749
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 Allison Grennan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Specialist
6902 PINE ST
Omaha, NE 68106
  • Reassigned Medicare billing, Nebraska enrollment
  • 73 clinicians in this Medicare group

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.

Counselor (Professional)
444 S 44TH ST
OMAHA, NE 68131
Behavior Technician
444 S 44TH ST
OMAHA, NE 68131
Physical Therapist
444 S 44TH ST
OMAHA, NE 68131
Physical Therapist
444 S 44TH ST
OMAHA, NE 68131
Psychologist
444 S 44TH ST
OMAHA, NE 68131
Behavior Analyst
444 S 44TH ST
OMAHA, NE 68131
Counselor (Mental Health)
444 S 44TH ST
OMAHA, NE 68131
Speech-Language Pathologist
444 S 44TH ST
OMAHA, NE 68131

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 Allison Grennan's NPI number?

The NPI number for Allison Grennan is 1295013175. It was assigned to this individual provider in the NPPES registry on July 27, 2011.

Where is Allison Grennan located?

Allison Grennan practices at 444 S 44th St, Omaha, NE 68131. The listed phone number is (402) 559-6408.

What is Allison Grennan's specialty?

The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.

Is Allison Grennan enrolled in Medicare?

Yes. Allison Grennan 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 organization bills Medicare for Allison Grennan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Allison Grennan reassigns Medicare benefits to University Of Nebraska Board Of Regents (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 Allison Grennan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Allison Grennan 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 Allison Grennan 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 Allison Grennan was last updated on November 4, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.