Individual provider Active NPI

Allison Lynn Wastak, NP-C, RN, CCRN

  • Family Nurse Practitioner
  • Oxnard, CA
National Provider Identifier
1093197923
Registry record updated May 7, 2024
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Nurse PractitionerTaxonomy code 363LF0000X
License
0024172720 Issued in VA
Practice address
1910 Outlet Center Dr
Oxnard, CA 93036-0677
Phone
(805) 485-2400
Fax
(805) 485-3025
NPI assigned
Jun 27, 2015
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on May 7, 2024

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Family Nurse Practitioner 363LF0000X 0024172720 VA Primary

Addresses

Primary practice location

1910 Outlet Center Dr
Oxnard, CA 93036-0677

Mailing address

1910 Outlet Center Dr
Oxnard, CA 93036-0677
Phone (805) 485-2400

Other practice location 1

600 Gresham Dr Ste 8630B
Norfolk, VA 23507-1904
Phone (757) 388-6115

Other practice location 2

4000 Calle Tecate Ste 105
Camarillo, CA 93012-5283
Phone (805) 485-2400

Other practice location 3

483 W Seed Farm Rd
Sacaton, AZ 85147-5000
Phone (602) 528-1200

Other identifiers 8

IdentifierTypeStateIssuer
1093197923OtherVAUSA MANAGED CARE
1093197923OtherVAMULTIPLAN
-029OtherVATRICARE/CHAMPUS
1093197923OtherVAVIRGINIA PREMIER HEALTH PLAN
1093197923MedicaidVA
1093197923OtherVAOPTIMA HEALTH
1093197923OtherVACORVEL
1093197923MedicaidNC

Other names 1

  • Allison Seipp Former name

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in VA, CA, TX, DC4 enrollments
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: No
Green means eligible to order or refer.

Enrollment records 4

Enrollment IDStateProvider typePAC IDDetails
I20151001002232 VA Practitioner - Nurse Practitioner 2769790203 Reassigns benefits to 2 organizations
I20221005003287 CA Practitioner - Nurse Practitioner 2769790203 Reassigns benefits to 1 organization
I20240110001832 TX Practitioner - Nurse Practitioner 2769790203 Reassigns benefits to 1 organization
I20251103003431 DC Practitioner - Nurse Practitioner 2769790203 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Nurse Practitioner
Education
University of South Alabama College of Medicine, 2015
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Inova Health Care ServicesGroup PAC ID 2466351093, 1,821 clinicians

Practice addresses (Care Compare)

2501 Parkers LN
Alexandria, VA 22306-3209
Phone (877) 511-4625

3300 Gallows Rd
Falls Church, VA 22042-3307

400 Fannon St
FL 3
Alexandria, VA 22301-1011
Phone (703) 780-9014

44045 Rivderside Pkwy
Leesburg, VA 20176-5101
Phone (703) 771-2960

8221 Willow Oaks Corporate Dr
Fairfax, VA 22031-4512
Phone (703) 237-3446

Hospital & facility affiliations

  • Inova Fairfax Hospital Hospital, Falls Church, VA, CCN 490063
  • Inova Alexandria Hospital Hospital, Alexandria, VA, CCN 490040
  • Inova Mount Vernon Hospital Hospital, Alexandria, VA, CCN 490122
  • Inova Fair Oaks Hospital Hospital, Fairfax, VA, CCN 490101

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Nurse Practitioner, Registered Nurse

State licenses

LicenseStateTypeSpecialty
0024172720VAMDFamily Nurse Practitioner

Practice roles

OrganizationSpecialtyStatusNew patients
Inova Health Care Services CurrentSince Sep 15, 2025 Accepting new patients
Inova Health Care Services CurrentSince Sep 15, 2025 Accepting new patients
West Coast Pulmonary Physicians a Professional Medical Corporation CurrentSince Oct 1, 2022 Accepting new patients
Gila River Health Care Corporation Current Accepting new patients
Gila River Health Care CurrentSince Sep 14, 2023 Accepting new patients
Gila River Health Care Corporation CurrentSince Sep 14, 2023 Accepting new patients
Sentara Medical Group CurrentSince Oct 30, 2017 Accepting new patients
Inova Health Care Services CurrentSince Sep 15, 2025 Accepting new patients

Locations

17487 S Healthcare Dr
#H
Laveen, AZ 85339
Phone (520) 550-6000

48203 W Farrell Rd
#H
Maricopa, AZ 85139
Phone (520) 568-3881

4000 Calle Tecate
Ste 115
Camarillo, CA 93012
Phone (805) 485-2400

4000 Calle Tecate
Ste 105
Camarillo, CA 93012
Phone (805) 485-2400

1910 Outlet Center Dr
Oxnard, CA 93036
Phone (805) 485-2400

400 Fannon St
Fl 3
Alexandria, VA 22301
Phone (571) 665-6480

2501 Parkers Ln
Ste 114
Alexandria, VA 22306
Phone (571) 472-6431

3289 Woodburn Rd
Ste 350
Annandale, VA 22003
Phone (703) 641-8616

3620 Joseph Siewick Dr
Ste 406
Fairfax, VA 22033
Phone (703) 429-2109

8260 Willow Oaks Corporate Dr
Ste 500
Fairfax, VA 22031

3300 Gallows Rd
Falls Church, VA 22042
Phone (703) 352-9395

44045 Riverside Pkwy
Leesburg, VA 20176
Phone (703) 858-6040

224B Cornwall St NW
Leesburg, VA 20176
Phone (703) 771-2894

850 Kempsville Rd
Norfolk, VA 23502
Phone (757) 261-0162

863 Glenrock Rd
Norfolk, VA 23502
Phone (757) 252-3321

600 Gresham Dr
Ste 8630
Norfolk, VA 23507
Phone (757) 388-6105

600 Gresham Dr
Ste 8630B
Norfolk, VA 23507
Phone (757) 338-6115

600 Gresham Dr
Norfolk, VA 23507
Phone (757) 473-0055

8100 Boone Blvd
Ste 710
Vienna, VA 22182
Phone (571) 665-6430

1975 Glenn Mitchell Dr
Ste 202
Virginia Beach, VA 23456
Phone (757) 507-8610

14349 Gideon Dr
Fl 2
Woodbridge, VA 22192
Phone (571) 472-8760

Interoperability endpoints

  • Direct secure messaging: allison.wastak.p23@direct.wcp.nextgenshare.com
  • FHIR API: https://fhir.nextgen.com/nge/prod/fhir-api-r4/fhir/r4/
  • Direct secure messaging: awastak1459330@soc.inova.org
  • Direct secure messaging: awastak4014@direct.sentara.net

Organizations & group practices 8

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

Hospital & facility affiliations 5

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1435363200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1715040000000",
    "number": "1093197923",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1910 OUTLET CENTER DR",
            "city": "OXNARD",
            "state": "CA",
            "postal_code": "930360677",
            "telephone_number": "805-485-2400",
            "fax_number": "805-485-3025"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1910 OUTLET CENTER DR",
            "city": "OXNARD",
            "state": "CA",
            "postal_code": "930360677",
            "telephone_number": "805-485-2400",
            "fax_number": "805-485-3025"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "600 Gresham Dr Ste 8630B",
            "address_purpose": "LOCATION",
            "city": "Norfolk",
            "state": "VA",
            "postal_code": "235071904",
            "country_code": "US",
            "telephone_number": "757-388-6115",
            "fax_number": "757-275-9998",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "4000 Calle Tecate Ste 105",
            "address_purpose": "LOCATION",
            "city": "Camarillo",
            "state": "CA",
            "postal_code": "930125283",
            "country_code": "US",
            "telephone_number": "805-485-2400",
            "fax_number": "805-485-3025",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "483 W Seed Farm Rd",
            "address_purpose": "LOCATION",
            "city": "Sacaton",
            "state": "AZ",
            "postal_code": "851475000",
            "country_code": "US",
            "telephone_number": "602-528-1200",
            "fax_number": "602-528-1255",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WASTAK",
        "first_name": "ALLISON",
        "middle_name": "LYNN",
        "credential": "NP-C, RN, CCRN",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2015-06-27",
        "last_updated": "2024-05-07",
        "certification_date": "2024-05-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "VA",
            "license": "0024172720",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "USA MANAGED CARE",
            "identifier": "1093197923",
            "state": "VA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MULTIPLAN",
            "identifier": "1093197923",
            "state": "VA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "TRICARE/CHAMPUS",
            "identifier": "-029",
            "state": "VA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "VIRGINIA PREMIER HEALTH PLAN",
            "identifier": "1093197923",
            "state": "VA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1093197923",
            "state": "VA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "OPTIMA HEALTH",
            "identifier": "1093197923",
            "state": "VA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CORVEL",
            "identifier": "1093197923",
            "state": "VA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1093197923",
            "state": "NC"
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "ALLISON",
            "last_name": "SEIPP",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in Oxnard, CA

Sources for this page

Verify at the official NPI Registry.