DR. GARY STEVEN AUMILLER PH.D.
NPI 1144490731
Psychologist - Clinical in Georgetown, DE

Active since March 10, 2008PECOS EnrolledAccepts Medicare Assignment
27 ROWLAND WAY, GEORGETOWN, DE 19947(631) 624-4916(631) 731-2310 Get Directions Write a Review

NPPES record last updated: January 27, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jan 27, 2026, Nov 15, 2019 (2 updates tracked since 2019).

About Dr. Gary Steven Aumiller Ph.d. NPPES

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

DR. GARY STEVEN AUMILLER PH.D. (NPI 1144490731) is an individual clinical provider in Georgetown, Delaware, licensed in New York (8117-1) and active in the NPI registry since March 2008. He is enrolled in Medicare PECOS and is a graduate of Other (1983).

NPPES Registry Identity

NPI1144490731
Entity TypeIndividualMale
Primary Taxonomy103TC0700X
Provider Legal NameDR. GARY STEVEN AUMILLERCredential: PH.D.
Location Address27 ROWLAND WAYGeorgetown, DE 19947-3812
Mailing Address27 Rowland WayGeorgetown, DE 19947-3812 · (631) 624-4916 · Fax (631) 731-2310
Fax(631) 731-2310
Sole ProprietorYes
Medical School CMSOtherGraduated 1983
Enumeration DateMarch 10, 2008
Last NPPES UpdateJanuary 27, 20262 updates tracked since enumeration
NPPES CertifiedJanuary 27, 2026
NPI 1144490731 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 5

Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code103TC0700X
Licenses Licensed in NY · 8117-1 Licensed in DE · B1-0011453
Definition

A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

Also ListedClinical NeuropsychologistTaxonomy 103G00000X · License B1-0011453 (DE)
Also ListedPsychologistTaxonomy 103T00000X · License B1-0011453 (DE)
Also ListedPsychologist · Cognitive & BehavioralTaxonomy 103TB0200X · License B1-0011453 (DE)
Also ListedPsychologist · ForensicTaxonomy 103TF0200X · License 8771-1 (NY)
27 ROWLAND WAY, Georgetown, DE 19947

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Dr. Gary Steven Aumiller Ph.d. 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 ID5890971030
PECOS Enrollment IDI20110926000269
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.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Psychotherapy, 1 hour 90837
Psychotherapy is a therapeutic interaction or treatment between a trained professional and a patient. In a 1-hour session, you'll talk about your feelings, thoughts, and behaviors to help identify and manage mental health issues. This process aids in personal growth, healing, and improved well-being.
913 services16 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 19947 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
$173.08 typical visit price
range $57.12 – $173.08
Typical copayment $43.27 (range $14.28 – $43.27)
Most-billed visit code 99205
Established Patient
$100.68 typical visit price
range $18.36 – $141.05
Typical copayment $25.17 (range $4.59 – $35.26)
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.

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 Gary Aumiller's NPI number?

The NPI number for Gary Aumiller is 1144490731. It was assigned to this individual provider in the NPPES registry on March 10, 2008.

Where is Gary Aumiller located?

Gary Aumiller practices at 27 Rowland Way, Georgetown, DE 19947. The listed phone number is (631) 624-4916.

What is Gary Aumiller's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Is Gary Aumiller enrolled in Medicare?

Yes. Gary Aumiller 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.

What insurance does Gary Aumiller accept?

Health plans from Providence Health Plan list Gary Aumiller 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 Gary Aumiller was last updated on January 27, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.