Active NPI
Gary Steven Aumiller, PH.D.
- Clinical Psychologist
- Georgetown, DE
National Provider Identifier
1144490731
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Clinical Psychologist
- License
- 8117-1
- Practice address
- 27 Rowland Way
Georgetown, DE 19947-3812 - Phone
- (631) 624-4916
- Fax
- (631) 731-2310
- NPI assigned
- Mar 10, 2008
- Last updated
- Jan 27, 2026
- Sex
- Male
- Sole proprietor
- Yes
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 6
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Clinical Neuropsychologist | 103G00000X | B1-0011453 | DE | |
| Psychologist | 103T00000X | B1-0011453 | DE | |
| Cognitive & Behavioral Psychologist | 103TB0200X | B1-0011453 | DE | |
| Clinical Psychologist | 103TC0700X | 8117-1 | NY | Primary |
| Clinical Psychologist | 103TC0700X | B1-0011453 | DE | |
| Forensic Psychologist | 103TF0200X | 8771-1 | NY |
Addresses
Primary practice location
27 Rowland Way
Georgetown, DE 19947-3812
Mailing address
27 Rowland Way
Georgetown, DE 19947-3812
Phone (631) 624-4916
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in NY
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: No
- Power mobility devices: No
- Hospice: No
Enrollment records 1
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| I20110926000269 | NY | Practitioner - Clinical Psychologist | 5890971030 | Practice locations: Hauppauge, NY |
Care Compare profile
Medicare Care Compare- Specialty
- Clinical Psychologist
- Education
- Other, 1983
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
Practice addresses (Care Compare)
750 Veterans Memorial Hwy
Suite 205
Hauppauge, NY 11788-2943
Phone (631) 624-4916
900 Wheeler Rd
Suite 205
Hauppauge, NY 11788-2957
Phone (631) 624-4916
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Philosophy
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| B1-0011453 | DE | MD | Cognitive & Behavioral Psychologist |
| 8117-1 | NY | MD | Clinical Psychologist |
| 8771-1 | NY | MD | Forensic Psychologist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1205107200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1769472000000",
"number": "1144490731",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "27 ROWLAND WAY",
"city": "GEORGETOWN",
"state": "DE",
"postal_code": "199473812",
"telephone_number": "631-624-4916",
"fax_number": "631-731-2310"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "27 ROWLAND WAY",
"city": "GEORGETOWN",
"state": "DE",
"postal_code": "199473812",
"telephone_number": "631-624-4916",
"fax_number": "631-731-2310"
}
],
"practiceLocations": [],
"basic": {
"last_name": "AUMILLER",
"first_name": "GARY",
"middle_name": "STEVEN",
"name_prefix": "Dr.",
"credential": "PH.D.",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2008-03-10",
"last_updated": "2026-01-27",
"certification_date": "2026-01-27",
"status": "A"
},
"taxonomies": [
{
"code": "103G00000X",
"taxonomy_group": "",
"desc": "Clinical Neuropsychologist",
"state": "DE",
"license": "B1-0011453",
"primary": false
},
{
"code": "103T00000X",
"taxonomy_group": "",
"desc": "Psychologist",
"state": "DE",
"license": "B1-0011453",
"primary": false
},
{
"code": "103TB0200X",
"taxonomy_group": "",
"desc": "Psychologist, Cognitive & Behavioral",
"state": "DE",
"license": "B1-0011453",
"primary": false
},
{
"code": "103TC0700X",
"taxonomy_group": "",
"desc": "Psychologist, Clinical",
"state": "NY",
"license": "8117-1",
"primary": true
},
{
"code": "103TC0700X",
"taxonomy_group": "",
"desc": "Psychologist, Clinical",
"state": "DE",
"license": "B1-0011453",
"primary": false
},
{
"code": "103TF0200X",
"taxonomy_group": "",
"desc": "Psychologist, Forensic",
"state": "NY",
"license": "8771-1",
"primary": false
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Georgetown, DE
- Arbor Counseling Center LLC
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- Atlantic Family Physicians, LLC
- Ats of Delaware, LLC (Sussex County Comprehensive Treatment Center)
- Augustine's & Co. LLC (SussexcareTransportation Services)
- Judy L. Bailey, M.D.
- Eric Stephen Balliet, D.D.S.
- Sue Ann Bardsley, APRN
- Michelle Barkemeyer
- Lisa Bartels, MD
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 27, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.