Active NPI
Mackenzie Nicole Mueller, MS, RD, LD
- Registered Dietitian
- Bethesda, MD
National Provider Identifier
1700415833
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Registered Dietitian
- License
- DT85823
- Practice address
- 4701 Sangamore Rd Ste N100
Bethesda, MD 20816-2558 - Phone
- (914) 919-9200
- NPI assigned
- Apr 1, 2020
- 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 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Registered Dietitian | 133V00000X | DT85823 | TX | Primary |
Addresses
Primary practice location
4701 Sangamore Rd Ste N100
Bethesda, MD 20816-2558
Mailing address
5414 Northdale Dr
Austin, TX 78723-6214
Phone (972) 375-4369
Other practice location 1
911 W 38th St
Austin, TX 78705-1188
Phone (512) 459-1131
Other practice location 2
4625 Lindell Blvd Fl 2
Saint Louis, MO 63108-3739
Phone (914) 919-9200
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in TX
Enrollment records 1
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Master of Science
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Nourish, Inc. | Dietitian, Registered | Current | Accepting new patients |
Locations
500 Westover Dr
Sanford, NC 27330
Phone (478) 766-4000
3724 Jefferson St
Ste 104
Austin, TX 78731
Phone (512) 399-9039
Interoperability endpoints
- mackenzie.mueller.1@25307.direct.athenahealth.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 and National Provider Directory roles.
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1585699200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1769990400000",
"number": "1700415833",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "5414 NORTHDALE DR",
"city": "AUSTIN",
"state": "TX",
"postal_code": "787236214",
"telephone_number": "972-375-4369"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "4701 SANGAMORE RD STE N100",
"city": "BETHESDA",
"state": "MD",
"postal_code": "208162558",
"telephone_number": "914-919-9200"
}
],
"practiceLocations": [
{
"address_1": "911 W 38th St",
"address_purpose": "LOCATION",
"city": "Austin",
"state": "TX",
"postal_code": "787051188",
"country_code": "US",
"telephone_number": "512-459-1131",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "4625 Lindell Blvd Fl 2",
"address_purpose": "LOCATION",
"city": "Saint Louis",
"state": "MO",
"postal_code": "631083739",
"country_code": "US",
"telephone_number": "914-919-9200",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "MUELLER",
"first_name": "MACKENZIE",
"middle_name": "NICOLE",
"credential": "MS, RD, LD",
"sole_proprietor": "YES",
"sex": "F",
"enumeration_date": "2020-04-01",
"last_updated": "2026-02-02",
"certification_date": "2026-02-02",
"status": "A"
},
"taxonomies": [
{
"code": "133V00000X",
"taxonomy_group": "",
"desc": "Dietitian, Registered",
"state": "TX",
"license": "DT85823",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Bethesda, MD
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 2, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.