Active NPI
Crystal Marsh, RBT
- Behavior Technician
- Knoxville, TN
National Provider Identifier
1831814052
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Behavior Technician
- License
- RBT-22-218436
- Practice address
- 9038 Cross Park Dr Ste 105
Knoxville, TN 37923-4729 - Phone
- (865) 394-6612
- Fax
- (865) 315-7014
- NPI assigned
- Oct 10, 2022
- 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 |
|---|---|---|---|---|
| Behavior Technician | 106S00000X | RBT-22-218436 | TN | Primary |
Addresses
Primary practice location
9038 Cross Park Dr Ste 105
Knoxville, TN 37923-4729
Mailing address
9038 Cross Park Dr Ste 105
Knoxville, TN 37923-4729
Phone (865) 394-6612
Other names 1
- Crystal Simmons
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Not enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| RBT-22-218436 | TN | MD | Behavior Technician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Leaps and Bounds ABA LLC | Behavior Technician | Current | Accepting new patients |
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 and National Provider Directory roles.
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1665360000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1773014400000",
"number": "1831814052",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "9038 CROSS PARK DR STE 105",
"city": "KNOXVILLE",
"state": "TN",
"postal_code": "379234729",
"telephone_number": "865-394-6612",
"fax_number": "865-315-7014"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "9038 CROSS PARK DR STE 105",
"city": "KNOXVILLE",
"state": "TN",
"postal_code": "379234729",
"telephone_number": "865-394-6612",
"fax_number": "865-315-7014"
}
],
"practiceLocations": [],
"basic": {
"last_name": "MARSH",
"first_name": "CRYSTAL",
"credential": "RBT",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2022-10-10",
"last_updated": "2026-03-09",
"certification_date": "2026-03-09",
"status": "A"
},
"taxonomies": [
{
"code": "106S00000X",
"taxonomy_group": "",
"desc": "Behavior Technician",
"state": "TN",
"license": "RBT-22-218436",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": [
{
"first_name": "CRYSTAL",
"last_name": "SIMMONS",
"code": "1",
"type": "Former Name"
}
]
}
Other providers in Knoxville, TN
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 9, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.