Gregory Lennox, MA

Primary specialty

Mental Health CounselorTaxonomy code 101YM0800X

License

2291 Issued in NH

Practice address

539 Islington St Ste 4
Portsmouth, NH 03801-4471

Phone

(603) 883-0005

Fax

(603) 883-0007

NPI assigned

Oct 12, 2017

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: No
• Power mobility devices: No
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Mental Health Counselor

Education

Other, 2018

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

The Counseling Center of Nashua IncGroup PAC ID 3274523758, 250 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Master of Arts

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: ccn.gregorylennox@140126.advancedmd-direct.com

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.

• The Counseling Center of Nashua Inc

  • Clinical Psychologist
  • Nashua, NH
  • NPI 1144275389
  Medicare reassignment Care Compare group NPD
• Community Council of Nashua NH, Inc.

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • Nashua, NH
  • NPI 1770588444
  NPD (past)

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

{
    "created_epoch": "1507766400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1787529600000",
    "number": "1780195115",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4800 N SCOTTSDALE RD STE 2500",
            "city": "SCOTTSDALE",
            "state": "AZ",
            "postal_code": "852517630",
            "telephone_number": "603-883-0005",
            "fax_number": "603-883-0007"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "539 ISLINGTON ST STE 4",
            "city": "PORTSMOUTH",
            "state": "NH",
            "postal_code": "038014471",
            "telephone_number": "603-883-0005",
            "fax_number": "603-883-0007"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "440 Amherst St",
            "address_purpose": "LOCATION",
            "city": "Nashua",
            "state": "NH",
            "postal_code": "030631225",
            "country_code": "US",
            "telephone_number": "603-889-6147",
            "fax_number": "603-883-1568",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "LENNOX",
        "first_name": "GREGORY",
        "credential": "MA",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2017-10-12",
        "last_updated": "2026-08-24",
        "certification_date": "2026-08-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YM0800X",
            "taxonomy_group": "",
            "desc": "Counselor, Mental Health",
            "state": "NH",
            "license": "2291",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Elizabeth Lehr, DPT
• Kathryn Lemire, MSW, LICSW
• Emily Lemoine, BA
• Ryan Lena, MD
• Emily Lennon, FNP-BC
• Lens Doctors
• Angela Lent
• Susan C Leonard, LICSW
• Chet F Lesniak, PH.D.
• Molly Lessard, LMT

• Mental Health Counselor in Portsmouth, NH
• Providers in Portsmouth, NH by specialty
• Mental Health Counselor in New Hampshire

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 24, 2026; 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.