Individual provider Active NPI

Tonya Grissam, MD

  • Pediatrics Physician
  • Fort Lauderdale, FL
National Provider Identifier
1043385131
Registry record updated Jan 1, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Pediatrics PhysicianTaxonomy code 208000000X
License
4301106345 Issued in MI
Practice address
6451 N Federal Hwy Ste 800
Fort Lauderdale, FL 33308-1409
Phone
(800) 586-5022
Fax
(954) 229-9801
NPI assigned
Nov 22, 2006
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jan 1, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Pediatrics Physician 208000000X 4301106345 MI Primary
Pediatrics Physician 208000000X 051567 GA

Addresses

Primary practice location

6451 N Federal Hwy Ste 800
Fort Lauderdale, FL 33308-1409

Mailing address

6451 N Federal Hwy Ste 800
Fort Lauderdale, FL 33308-1409
Phone (800) 586-5022

Other identifiers 3

IdentifierTypeStateIssuer
000960913DMedicaidGA
000960913IMedicaidGA
000960913HMedicaidGA

Other names 1

  • Tonya Monique Grissam Other name

Medicare participation

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

Enrollment IDStateProvider typePAC IDDetails
I20220523000497 MI Practitioner - Pediatric Medicine 8022376938 Reassigns benefits to 4 organizations

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Mymichigan Medical Center Alma CurrentSince Feb 9, 2023 Accepting new patients
Dickinson County Healthcare System CurrentSince Oct 31, 2023 Accepting new patients
Mymichigan Medical Center Alpena Current Accepting new patients
Dickinson County Healthcare System Pediatrics CurrentSince Oct 31, 2023 Accepting new patients
Southern Monterey County Memorial Hospital Current Accepting new patients
Mymichigan Medical Center Gladwin CurrentSince Mar 20, 2023 Accepting new patients
Mymichigan Medical Center Alpena CurrentSince May 1, 2023 Accepting new patients
Mymichigan Medical Center Alma Current Accepting new patients
Mymichigan Medical Center Gladwin CurrentSince Mar 20, 2023 Accepting new patients
Dickinson County Healthcare System Past Accepting new patients
Mymichigan Medical Center West Branch Past Accepting new patients
Mymichigan Medical Center Alma Past Accepting new patients

Locations

400 Canal St
Ste B
King City, CA 93930
Phone (831) 385-1280

400 Canal St
Ste A
King City, CA 93930
Phone (831) 385-1280

210 Canal St
King City, CA 93930
Phone (931) 385-7100

300 Canal St
King City, CA 93930
Phone (831) 385-6000

300 E Warwick Dr
Alma, MI 48801
Phone (989) 463-0104

160 E Warwick Dr
Alma, MI 48801
Phone (855) 289-5353

1501 W Chisholm St
Alpena, MI 49707
Phone (989) 356-7000

515 Quarter St
Gladwin, MI 48624
Phone (989) 246-6201

1711 S Stephenson Ave
Ste 210
Iron Mountain, MI 49801
Phone (906) 776-5800

1721 S Stephenson Ave
Iron Mountain, MI 49801
Phone (906) 776-5415

121 N Pine River St
Ithaca, MI 48847
Phone (989) 875-0662

4000 Wellness Dr
Midland, MI 48670
Phone (844) 832-1956

4500 N Campus Ridge Dr
Midland, MI 48640
Phone (989) 837-9250

4851 E Pickard St
Ste 1760
Mt Pleasant, MI 48858
Phone (989) 775-1610

335 E Houghton Ave
West Branch, MI 48661
Phone (989) 343-3154

Interoperability endpoints

  • Direct secure messaging: tonya.grissam.1@22710.direct.athenahealth.com

Organizations & group practices 12

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.

NPI Registry JSON

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

{
    "created_epoch": "1164153600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1767225600000",
    "number": "1043385131",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6451 N FEDERAL HWY STE 800",
            "city": "FORT LAUDERDALE",
            "state": "FL",
            "postal_code": "333081409",
            "telephone_number": "800-586-5022",
            "fax_number": "954-229-9801"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6451 N FEDERAL HWY STE 800",
            "city": "FORT LAUDERDALE",
            "state": "FL",
            "postal_code": "333081409",
            "telephone_number": "800-586-5022",
            "fax_number": "954-229-9801"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GRISSAM",
        "first_name": "TONYA",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2006-11-22",
        "last_updated": "2026-01-01",
        "certification_date": "2026-01-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "MI",
            "license": "4301106345",
            "primary": true
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "GA",
            "license": "051567",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "000960913D",
            "state": "GA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "000960913I",
            "state": "GA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "000960913H",
            "state": "GA"
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "TONYA",
            "last_name": "GRISSAM",
            "middle_name": "MONIQUE",
            "code": "5",
            "type": "Other Name"
        }
    ]
}

Other providers in Fort Lauderdale, FL

Sources for this page

Verify at the official NPI Registry.