Active NPI
Tonya Grissam, MD
- Pediatrics Physician
- Fort Lauderdale, FL
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Pediatrics Physician
- License
- 4301106345
- 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
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| 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
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 000960913D | Medicaid | GA | |
| 000960913I | Medicaid | GA | |
| 000960913H | Medicaid | GA |
Other names 1
- Tonya Monique Grissam
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
Enrollment records 1
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Mymichigan Medical Center Alma | Current | Accepting new patients | |
| Dickinson County Healthcare System | Current | Accepting new patients | |
| Mymichigan Medical Center Alpena | Current | Accepting new patients | |
| Dickinson County Healthcare System | Pediatrics | Current | Accepting new patients |
| Southern Monterey County Memorial Hospital | Current | Accepting new patients | |
| Mymichigan Medical Center Gladwin | Current | Accepting new patients | |
| Mymichigan Medical Center Alpena | Current | Accepting new patients | |
| Mymichigan Medical Center Alma | Current | Accepting new patients | |
| Mymichigan Medical Center Gladwin | Current | 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
- 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.
-
- Emergency Medical Services (Emergency Medicine) Physician
- Iron Mountain, MI
- NPI 1891751186
Pediatrics
-
- Emergency Medicine Physician
- Alma, MI
- NPI 1568914422
-
- Emergency Medicine Physician
- Alpena, MI
- NPI 1508332792
-
- General Practice Physician
- Gladwin, MI
- NPI 1881869774
-
- Podiatrist
- Iron Mountain, MI
- NPI 1649578808
-
- Family Medicine Physician
- Alma, MI
- NPI 1265596126
-
- Internal Medicine Physician
- Alpena, MI
- NPI 1942302302
-
- Medicare Defined Swing Bed Hospital Unit
- Gladwin, MI
- NPI 1588374813
-
- Critical Access Hospital
- King City, CA
- NPI 1114917564
-
- General Acute Care Hospital
- Iron Mountain, MI
- NPI 1801887013
-
- General Acute Care Hospital
- Alma, MI
- NPI 1023097771
-
- General Acute Care Hospital
- West Branch, MI
- NPI 1538566765
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
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 1, 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.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.