NPIMap

Individual provider Active NPI

Ryan Christopher Ratts, M.D.

  • Hospitalist Physician
  • Lebanon, NH
National Provider Identifier
1033245469
Registry record updated Dec 15, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Hospitalist PhysicianTaxonomy code 208M00000X
License
15003 Issued in NH
Practice address
1 Medical Center Dr
Dartmouth Hitchcock Medical Center - Hospital Medicine
Lebanon, NH 03756-1000
Phone
(603) 650-8380
Fax
(603) 640-1228
NPI assigned
Feb 27, 2007
Last updated
Dec 15, 2025By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Dec 15, 2025

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 15003 NH
Pediatrics Physician 208000000X 15003 NH
Hospitalist Physician 208M00000X 15003 NH Primary

Addresses

Primary practice location

1 Medical Center Dr
Dartmouth Hitchcock Medical Center - Hospital Medicine
Lebanon, NH 03756-1000

Mailing address

1 Medical Center Dr
Dartmouth Hitchcock Medical Center - Hospital Medicine
Lebanon, NH 03756-1000
Phone (603) 650-8380

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20101119000822 NH Practitioner - HospitalistPractitioner - Internal MedicinePractitioner - Pediatric Medicine 9537355227 Reassigns benefits to 4 organizations

Care Compare profile

Medicare Care Compare
Specialty
HospitalistAlso: Internal Medicine
Education
Other, 2006
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Dartmouth-Hitchcock ClinicGroup PAC ID 4183537509, 1,445 clinicians

Practice addresses (Care Compare)

1 Medical Ctr Dr
Lebanon, NH 03756-1000
Phone (603) 650-5000

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
79.66 of 100Reported as apm
Quality
53.51
Promoting interoperability
100
Improvement activities
40

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Alice Peck Day Memorial Hospital Internal Medicine Current Accepting new patients
Mary Hitchcock Memorial Hospital Internal Medicine CurrentSince Jan 1, 2025 Accepting new patients
Alice Peck Day Memorial Hospital Internal Medicine Current Accepting new patients
Dartmouth-Hitchcock Clinic Internal Medicine CurrentSince Sep 21, 2010 Accepting new patients
Mary Hitchcock Memorial Hospital CurrentSince Jan 1, 2025 Accepting new patients
Alice Peck Day Memorial Hospital CurrentSince Jun 15, 2021 Accepting new patients
Alice Peck Day Memorial Hospital CurrentSince Jun 15, 2021 Accepting new patients
Cedarcrest, Inc. Past Accepting new patients

Locations

1 Medical Dr
Lebanon, NH 03756
Phone (603) 650-5922

5 Alice Peck Day Dr
Lebanon, NH 03766
Phone (603) 448-3996

Interoperability endpoints

  • FHIR API: https://edhwebportal.hitchcock.org/FHIRProxy/api/FHIR/R4/
  • Direct secure messaging: rratts15860@direct.dartmouth-hitchcock.org

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 2

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": "1172534400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1765756800000",
    "number": "1033245469",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1 MEDICAL CENTER DR",
            "address_2": "DARTMOUTH HITCHCOCK MEDICAL CENTER - HOSPITAL MEDICINE",
            "city": "LEBANON",
            "state": "NH",
            "postal_code": "037561000",
            "telephone_number": "603-650-8380",
            "fax_number": "603-653-6110"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1 MEDICAL CENTER DR",
            "address_2": "DARTMOUTH HITCHCOCK MEDICAL CENTER - HOSPITAL MEDICINE",
            "city": "LEBANON",
            "state": "NH",
            "postal_code": "037561000",
            "telephone_number": "603-650-8380",
            "fax_number": "603-640-1228"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "RATTS",
        "first_name": "RYAN",
        "middle_name": "CHRISTOPHER",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-02-27",
        "last_updated": "2025-12-15",
        "certification_date": "2025-12-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NH",
            "license": "15003",
            "primary": false
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "NH",
            "license": "15003",
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "NH",
            "license": "15003",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Lebanon, NH

Sources for this page

Verify at the official NPI Registry.