Karen M Armento, CRNA

Primary specialty

Certified Registered Nurse AnesthetistTaxonomy code 367500000X

License

0275522311 Issued in NH

Practice address

220 Cottage St
Littleton, NH 03561-4101

Phone

(603) 444-0272

Fax

(603) 444-0274

NPI assigned

Jul 3, 2006

Last updated

Dec 15, 2025By the provider in NPPES

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other identifiers 3

Other names 1

• Karen M Sellar Former name

Medicare fee-for-service enrollment

Enrolled in NH

Enrollment records 1

Specialty

Certified Registered Nurse Anesthetist (Crna)

Education

Other, 1984

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Amoskeag Anesthesia PLLCGroup PAC ID 1759375983, 165 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Speare Memorial Hospital Hospital, Plymouth, NH, CCN 301311

Medicare enrollment (NPD)

Enrolled

Credentials

Certified Registered Nurse, Nurse Practitioner

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.

• Amoskeag Anesthesia, PLLC

  • Anesthesiology Physician
  • Manchester, NH
  • NPI 1104883511

  Nurse Anesthetist, Certified Registered

  Medicare reassignment Care Compare group NPD
• Anesthesia Care Group PC

  • Anesthesiology Physician
  • Manchester, NH
  • NPI 1629074224
  Medicare reassignment NPD
• North American Partners in Anesthesia New Hampshire LLP

  • Anesthesiology Physician
  • Nashua, NH
  • NPI 1306838701
  Medicare reassignment NPD
• Medstream Anesthesia PLLC

  • Anesthesiology Physician
  • Richardson, TX
  • NPI 1649616160

  NH, Nurse Anesthetist, Certified Registered

  Medicare reassignment NPD
• Howard Steven Mitz, D.O.

  • Gastroenterology Physician
  • Littleton, NH
  • NPI 1558365155
  Medicare reassignment
• The New London Hospital Association, Inc.

  • Critical Access Hospital
  • New London, NH
  • NPI 1831200583
  NPD (past)

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

• Speare Memorial Hospital

  • Specialist
  • Plymouth, NH
  • NPI 1023036191

  Hospital

  Care Compare affiliation
• Speare Memorial Hospital

  dba Speare Podiatry

  • Foot & Ankle Surgery Podiatrist
  • Plymouth, NH
  • NPI 1407690019

  Hospital

  Care Compare affiliation
• Speare Memorial Hospital

  • Critical Access Hospital
  • Plymouth, NH
  • NPI 1760496376
  Care Compare affiliation
• Speare Memorial Hospital

  dba Wound Care & Hyperbaric Medicine Center

  • Wound Care Registered Nurse
  • Plymouth, NH
  • NPI 1861823999

  Hospital

  Care Compare affiliation

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

{
    "created_epoch": "1151884800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1765756800000",
    "number": "1932138674",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "220 COTTAGE ST",
            "city": "LITTLETON",
            "state": "NH",
            "postal_code": "035614101",
            "telephone_number": "603-444-0272",
            "fax_number": "603-444-0274"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "220 COTTAGE ST",
            "city": "LITTLETON",
            "state": "NH",
            "postal_code": "035614101",
            "telephone_number": "603-444-0272",
            "fax_number": "603-444-0274"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ARMENTO",
        "first_name": "KAREN",
        "middle_name": "M",
        "name_prefix": "Mrs.",
        "credential": "CRNA",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-07-03",
        "last_updated": "2025-12-15",
        "certification_date": "2025-12-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "NH",
            "license": "0275522311",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1008553",
            "state": "VT"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "30343158",
            "state": "NH"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUE CROSS BLUE SHIELD",
            "identifier": "40Y003604NH04",
            "state": "NH"
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "KAREN",
            "last_name": "SELLAR",
            "middle_name": "M",
            "credential": "CRNA",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Lyoudmila Andersen, D.M.D
• Carla Anderson
• Keith Anderson
• Anil K. Mukerjee, MD, LLC
• Alyssalee Antonucci, CHW
• Paul Arrington, M.D.
• Michelle E Aube, C.R.N.A.
• Michele Authier, LICSW
• Julianne M Bailey, M.S., LCMHC
• Devon Sean Barger, CRNA

• Certified Registered Nurse Anesthetist in Littleton, NH
• Providers in Littleton, NH by specialty
• Certified Registered Nurse Anesthetist in New Hampshire

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 15, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• 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.