Individual provider Active NPI

Martin Howard Tamkin, LMFT

  • Marriage & Family Therapist
  • Madison, WI
National Provider Identifier
1285954008
Registry record updated Mar 2, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Marriage & Family TherapistTaxonomy code 106H00000X
License
1211 Issued in WI
Practice address
440 Science Dr Ste 300
Madison, WI 53711-1064
Phone
(262) 999-3495
Fax
(608) 236-4461
NPI assigned
Jun 3, 2010
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Mar 2, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Marriage & Family Therapist 106H00000X MFC 44861 CA
Marriage & Family Therapist 106H00000X 1211 WI Primary

Addresses

Primary practice location

440 Science Dr Ste 300
Madison, WI 53711-1064

Mailing address

PO Box 61389
Sunnyvale, CA 94088-1389
Phone (608) 807-5200

Other practice location 1

209 E Java Dr # 61389
Sunnyvale, CA 94089-1031
Phone (608) 807-5200

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WI
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

Enrollment IDStateProvider typePAC IDDetails
I20250620001473 WI Practitioner - Marriage and Family Therapist 2567974124 Reassigns benefits to 1 organization

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

State licenses

LicenseStateTypeSpecialty
MFC 44861CAMDMarriage & Family Therapist

Practice roles

OrganizationSpecialtyStatusNew patients
Cornerstone Counseling Services, Inc CurrentSince Apr 13, 2025 Accepting new patients

Locations

4800 N Scottsdale Rd
Ste 2500
Scottsdale, AZ 85251
Phone (253) 346-0392

16535 W Bluemound Rd
Ste 200
Brookfield, WI 53005
Phone (262) 789-0909

440 Science Dr
Ste 300
Madison, WI 53711
Phone (608) 233-2100

10850 W Park Pl
Ste 100
Milwaukee, WI 53224
Phone (414) 361-4100

Interoperability endpoints

  • Direct secure messaging: lifestancehealth.martintamkin@149809.advancedmd-direct.com

Organizations & group practices 1

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.

NPI Registry JSON

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

{
    "created_epoch": "1275523200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1772409600000",
    "number": "1285954008",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 61389",
            "city": "SUNNYVALE",
            "state": "CA",
            "postal_code": "940881389",
            "telephone_number": "608-807-5200"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "440 SCIENCE DR STE 300",
            "city": "MADISON",
            "state": "WI",
            "postal_code": "537111064",
            "telephone_number": "262-999-3495",
            "fax_number": "608-236-4461"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "209 E Java Dr # 61389",
            "address_purpose": "LOCATION",
            "city": "Sunnyvale",
            "state": "CA",
            "postal_code": "940891031",
            "country_code": "US",
            "telephone_number": "608-807-5200",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "TAMKIN",
        "first_name": "MARTIN",
        "middle_name": "HOWARD",
        "name_prefix": "Mr.",
        "credential": "LMFT",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2010-06-03",
        "last_updated": "2026-03-02",
        "certification_date": "2026-03-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "106H00000X",
            "taxonomy_group": "",
            "desc": "Marriage & Family Therapist",
            "state": "CA",
            "license": "MFC 44861",
            "primary": false
        },
        {
            "code": "106H00000X",
            "taxonomy_group": "",
            "desc": "Marriage & Family Therapist",
            "state": "WI",
            "license": "1211",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Madison, WI

Sources for this page

Verify at the official NPI Registry.