Individual provider Active NPI

Jack Keiser, FNP

  • Family Nurse Practitioner
  • Nashville, TN
National Provider Identifier
1104393651
Registry record updated Apr 16, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Nurse PractitionerTaxonomy code 363LF0000X
License
95018639 Issued in CA
Practice address
41 Peabody St
Nashville, TN 37210-2125
Phone
(615) 420-7515
Fax
(615) 420-7515
NPI assigned
Nov 1, 2018
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 16, 2026

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Family Nurse Practitioner 363LF0000X 95018639 CA Primary
Family Nurse Practitioner 363LF0000X APRN11042755 FL
Family Nurse Practitioner 363LF0000X 24976 TN

Addresses

Primary practice location

41 Peabody St
Nashville, TN 37210-2125

Mailing address

9300 Arrowhead CT
Brentwood, TN 37027-7477
Phone (615) 775-7720

Other practice location 1

611 Gateway Blvd Ste 120
South San Francisco, CA 94080-7066
Phone (650) 761-4056

Other practice location 2

333 SE 2nd Ave Ste 2000
Miami, FL 33131-2185
Phone (650) 761-4056

Other practice location 3

2513 White Ave Apt 7
Nashville, TN 37204-2731
Phone (615) 420-7515

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in TN, CA, TX, FL4 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
I20190305001449 TN Practitioner - Nurse Practitioner 3577802800 Reassigns benefits to 1 organization
I20250822001230 CA Practitioner - Nurse Practitioner 3577802800 Reassigns benefits to 1 organization
I20260112001096 TX Practitioner - Nurse Practitioner 3577802800 Reassigns benefits to 1 organization
I20260310000029 FL Practitioner - Nurse Practitioner 3577802800 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Nurse Practitioner
Education
Other, 2018
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Saint Thomas Medical PartnersGroup PAC ID 1557269354, 588 clinicians
Dreem Sleep Clinic of CaliforniaGroup PAC ID 1456744598, 32 clinicians

Practice addresses (Care Compare)

1800 Medical Ctr Pkwy
Suite 400
Murfreesboro, TN 37129-2567
Phone (615) 284-2015

611 Gateway Blvd
Suite 120
South San Francisco, CA 94080-7066
Phone (650) 761-4056

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
95018639CAMDFamily Nurse Practitioner
APRN11042755FLMDFamily Nurse Practitioner
24976TNMDFamily Nurse Practitioner

Practice roles

OrganizationSpecialtyStatusNew patients
Dreem Sleep Clinic, P.a. CurrentSince Dec 7, 2025 Accepting new patients
Saint Thomas Medical Partners CurrentSince Jan 1, 2019 Accepting new patients
Dreem Health Sleep Clinic, P.a. CurrentSince Jan 7, 2026 Accepting new patients
Dreem Sleep Clinic of California CurrentSince Oct 6, 2025 Accepting new patients

Locations

611 Gateway Blvd
Ste 120
South San Francisco, CA 94080
Phone (650) 480-6023

333 SE 2nd Ave
Ste 2000
Miami, FL 33131
Phone (201) 581-3411

121 W 36th St
#237
New York, NY 10018
Phone (650) 761-4056

1800 Medical Center Pkwy
Ste 400
Murfreesboro, TN 37129
Phone (615) 396-6800

300 20th Ave N
Fl 9
Nashville, TN 37203

1911 State St
Nashville, TN 37203
Phone (615) 284-2015

300 20th Ave N
Ste 403
Nashville, TN 37203
Phone (615) 284-4088

2021 Guadalupe St
Austin, TX 78705
Phone (512) 469-2968

Organizations & group practices 4

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.

NPI Registry JSON

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

{
    "created_epoch": "1541030400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776297600000",
    "number": "1104393651",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "9300 ARROWHEAD CT",
            "city": "BRENTWOOD",
            "state": "TN",
            "postal_code": "370277477",
            "telephone_number": "615-775-7720"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "41 PEABODY ST",
            "city": "NASHVILLE",
            "state": "TN",
            "postal_code": "372102125",
            "telephone_number": "615-420-7515",
            "fax_number": "615-420-7515"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "611 Gateway Blvd Ste 120",
            "address_purpose": "LOCATION",
            "city": "South San Francisco",
            "state": "CA",
            "postal_code": "940807066",
            "country_code": "US",
            "telephone_number": "650-761-4056",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "333 SE 2nd Ave Ste 2000",
            "address_purpose": "LOCATION",
            "city": "Miami",
            "state": "FL",
            "postal_code": "331312185",
            "country_code": "US",
            "telephone_number": "650-761-4056",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2513 White Ave Apt 7",
            "address_purpose": "LOCATION",
            "city": "Nashville",
            "state": "TN",
            "postal_code": "372042731",
            "country_code": "US",
            "telephone_number": "615-420-7515",
            "fax_number": "615-420-7515",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "KEISER",
        "first_name": "JACK",
        "credential": "FNP",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2018-11-01",
        "last_updated": "2026-04-16",
        "certification_date": "2026-04-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "CA",
            "license": "95018639",
            "primary": true
        },
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "FL",
            "license": "APRN11042755",
            "primary": false
        },
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "TN",
            "license": "24976",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Nashville, TN

Sources for this page

Verify at the official NPI Registry.