Active NPI
Karen Lisa Mutter, D.O.
- Internal Medicine Physician
- Clearwater, FL
National Provider Identifier
1265470892
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Internal Medicine Physician
- License
- OS 6328
- Practice address
- 5771 Roosevelt Blvd
Suite 300
Clearwater, FL 33760-3413 - Phone
- (727) 524-0900
- Fax
- (727) 507-8822
- NPI assigned
- Jun 4, 2006
- Sex
- Female
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Internal Medicine Physician | 207R00000X | OS 6328 | FL | Primary |
Addresses
Primary practice location
5771 Roosevelt Blvd
Suite 300
Clearwater, FL 33760-3413
Mailing address
5771 Roosevelt Blvd
Suite 300
Clearwater, FL 33760-3413
Phone (727) 524-0900
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
- Opted out of Medicare
- Yes, effective Jan 1, 2025 through Jan 1, 2027
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Osteopathy
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| OS 6328 | FL | MD | Internal Medicine Physician |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1149379200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1265470892",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "5771 ROOSEVELT BLVD",
"address_2": "SUITE 300",
"city": "CLEARWATER",
"state": "FL",
"postal_code": "337603413",
"telephone_number": "727-524-0900",
"fax_number": "727-507-8822"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "5771 ROOSEVELT BLVD",
"address_2": "SUITE 300",
"city": "CLEARWATER",
"state": "FL",
"postal_code": "337603413",
"telephone_number": "727-524-0900",
"fax_number": "727-507-8822"
}
],
"practiceLocations": [],
"basic": {
"last_name": "MUTTER",
"first_name": "KAREN",
"middle_name": "LISA",
"credential": "D.O.",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2006-06-04",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "207R00000X",
"taxonomy_group": "",
"desc": "Internal Medicine",
"state": "FL",
"license": "OS 6328",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Clearwater, FL
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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; Opt Out Affidavits.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.