Ramon Hendrik Guillen

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

34222 Issued in NH

Practice address

724 N Main St
Laconia, NH 03246-2742

Phone

(603) 524-9201

NPI assigned

Jul 16, 2022

Last updated

Jun 26, 2025By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

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

Specialty

Internal Medicine

Education

Other, 2020

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Concord Hospital-LaconiaGroup PAC ID 7012326259, 275 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Granite Vna, Inc Home health agency, Concord, NH, CCN 307000
• Concord Hospital- Laconia Hospital, Laconia, NH, CCN 300005
• Concord Hospital Hospital, Concord, NH, CCN 300001
• Concord Hospital- Franklin Hospital, Franklin, NH, CCN 301306

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

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.

• Concord Hospital-Laconia

  dba Concord Hospital-Laconia Professional Billing Service

  • Family Medicine Physician
  • Laconia, NH
  • NPI 1053993741

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• Concord Hospital-Laconia

  dba Concord Hospital Dental Center-Laconia

  • Dental Clinic/Center
  • Laconia, NH
  • NPI 1134226327
  NPD (past)

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

• Concord Hospital-Franklin

  • Critical Access Hospital
  • Franklin, NH
  • NPI 1700960895
  Care Compare affiliation
• Concord Hospital-Laconia

  • General Acute Care Hospital
  • Laconia, NH
  • NPI 1053495234
  Care Compare affiliation
• Concord Hospital-Laconia

  dba Concord Hospital-Laconia Professional Billing Service

  • Family Medicine Physician
  • Laconia, NH
  • NPI 1053993741

  Hospital

  Care Compare affiliation
• Concord Hospital, Inc.

  • General Acute Care Hospital
  • Concord, NH
  • NPI 1215988530
  Care Compare affiliation
• Granite Vna, Inc.

  • Home Health Agency
  • Concord, NH
  • NPI 1164425583
  Care Compare affiliation

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

{
    "created_epoch": "1657929600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1750896000000",
    "number": "1922732734",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "330 MOUNT AUBURN ST",
            "city": "CAMBRIDGE",
            "state": "MA",
            "postal_code": "021385502"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "724 N MAIN ST",
            "city": "LACONIA",
            "state": "NH",
            "postal_code": "032462742",
            "telephone_number": "603-524-9201"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GUILLEN",
        "first_name": "RAMON HENDRIK",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2022-07-16",
        "last_updated": "2025-06-26",
        "certification_date": "2025-06-26",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NH",
            "license": "34222",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Michael Groenke, M.D.
• Thomas Stanley Gross, MSW
• Kristen M Guest, LCMHC
• Jocelyn Guild, COTA/L
• Stephen G. Guild, DC
• Kerrin Gullison, OTR/L
• Roger Gutner, M.D.
• Kathleen Grace Haas
• Kyle Haas
• Krista Jordan Hachey, MD, MPH

• Internal Medicine Physician in Laconia, NH
• Providers in Laconia, NH by specialty
• Internal Medicine Physician in New Hampshire

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 26, 2025; 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.

Verify at the official NPI Registry.