Individual provider Active NPI

Lauren Demaris, DO

  • Internal Medicine Physician
  • Portsmouth, NH
National Provider Identifier
1124640107
Registry record updated Jul 31, 2024
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
25384 Issued in NH
Practice address
333 Borthwick Ave Ste 100
Portsmouth, NH 03801-4198
Phone
(603) 436-5110
NPI assigned
May 12, 2020
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 31, 2024

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 25384 NH Primary

Addresses

Primary practice location

333 Borthwick Ave Ste 100
Portsmouth, NH 03801-4198

Mailing address

333 Borthwick Ave Ste 100
Portsmouth, NH 03801-4198
Phone (603) 436-5110

Other names 1

  • Lauren Horsley Former name

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NH
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20241105002755 NH Practitioner - Internal Medicine 5991239527 Reassigns benefits to 6 organizations

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Other, 2020
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Vantage Healthcare LLCGroup PAC ID 8224361191, 72 clinicians
Hospital Medicine Services of NH, LLCGroup PAC ID 8527423706, 88 clinicians
New Creation Healing Center, IncGroup PAC ID 7911916663, 3 clinicians

Practice addresses (Care Compare)

15 Riverwoods Dr
Exeter, NH 03833-5310
Phone (603) 742-4700

200 Alliance Way
Manchester, NH 03102-8400
Phone (603) 836-2302

22 Tuck Rd
Hampton, NH 03842-1225
Phone (781) 867-2050

333 Borthwick Ave
Portsmouth, NH 03801-7128
Phone (603) 436-5110

5 Timber LN
Exeter, NH 03833-5331
Phone (603) 742-4700

80 Route 125
Kingston, NH 03848-3535
Phone (603) 642-6700

Hospital & facility affiliations

  • Beth Israel Lahey Health at Home Hospice, Exeter, NH, CCN 301510
  • Portsmouth Regional Hospital Hospital, Portsmouth, NH, CCN 300029
  • Elliot Hospital Hospital, Manchester, NH, CCN 300012
  • Warde Health Center Nursing home, Windham, NH, CCN 305043
  • Rockingham County Nursing Home Nursing home, Brentwood, NH, CCN 305046
  • Riverwoods at Exeter Nursing home, Exeter, NH, CCN 305049

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Osteopathy

State licenses

LicenseStateTypeSpecialty
25384NHMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
New Creation Healing Center, Inc CurrentSince Oct 1, 2025 Accepting new patients
Shepherds Heart Counseling LLC CurrentSince Oct 1, 2025 Accepting new patients
Vantage Healthcare LLC Internal Medicine CurrentSince Aug 23, 2025 Accepting new patients
Alignmed Medical Group, PC CurrentSince Dec 16, 2025 Accepting new patients
Genesis Eldercare Physician Services LLC CurrentSince Dec 16, 2025 Accepting new patients
Alignmed Partners, PC CurrentSince Dec 16, 2025 Accepting new patients
Hospital Medicine Services of NH, LLC CurrentSince Aug 30, 2024 Accepting new patients
Genesis Eldercare Physician Services LLC CurrentSince Dec 16, 2025 Accepting new patients
HCA Health Services of New Hampshire Inc Past Accepting new patients
County of Rockingham Past Accepting new patients
Genesis Elder Care Physician Services LLC Past Accepting new patients
Warde Rehabilitation and Nursing Center Past Accepting new patients

Locations

117 North Rd
Brentwood, NH 03833
Phone (603) 679-5335

239 Pleasant St
Concord, NH 03301
Phone (603) 224-6561

1 Parkland Dr
Derry, NH 03038
Phone (603) 421-2220

22 Tuck Rd
Hampton, NH 03842
Phone (603) 926-4551

80 Route 125
Kingston, NH 03848
Phone (603) 382-7391

24 Old Etna Rd
Lebanon, NH 03766
Phone (603) 442-4207

22 Hunt St
Nashua, NH 03060
Phone (603) 889-5450

333 Bothwick Ave
Portsmouth, NH 03801
Phone (603) 433-4907

8 Snow Rd
Winchester, NH 03470
Phone (603) 239-6355

2000 Health Park Dr
Brentwood, TN 37027
Phone (615) 372-5426

Organizations & group practices 12

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 6

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": "1589241600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1722384000000",
    "number": "1124640107",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "333 BORTHWICK AVE STE 100",
            "city": "PORTSMOUTH",
            "state": "NH",
            "postal_code": "038014198",
            "telephone_number": "603-436-5110"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "333 BORTHWICK AVE STE 100",
            "city": "PORTSMOUTH",
            "state": "NH",
            "postal_code": "038014198",
            "telephone_number": "603-436-5110"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DEMARIS",
        "first_name": "LAUREN",
        "name_prefix": "Dr.",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2020-05-12",
        "last_updated": "2024-07-31",
        "certification_date": "2024-07-31",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NH",
            "license": "25384",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "LAUREN",
            "last_name": "HORSLEY",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in Portsmouth, NH

Sources for this page

Verify at the official NPI Registry.