Active NPI
Nathaniel Clifford Klein, M.D., M.B.A., M.S.
- Obstetrics & Gynecology Physician
- Morristown, TN
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Obstetrics & Gynecology Physician
- License
- 60789
- Practice address
- 609 McFarland St
Morristown, TN 37814-3976 - Phone
- (423) 492-7125
- NPI assigned
- Jul 10, 2012
- Last updated
- Aug 17, 2026
- Sex
- Male
- 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 |
|---|---|---|---|---|
| Gynecology Physician | 207VG0400X | MD0000060789 | TN | |
| Obstetrics & Gynecology Physician | 207V00000X | 60789 | TN | Primary |
Addresses
Primary practice location
609 McFarland St
Morristown, TN 37814-3976
Mailing address
609 McFarland Street
Knoxville, TN 37995-0001
Phone (423) 492-7125
Other practice location 1
1440 Cedar Ln
Tullahoma, TN 37388-2485
Phone (615) 322-5000
Other practice location 2
1919 Charlotte Ave Ste 101
Nashville, TN 37203-2240
Phone (615) 341-4419
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| Q056848 | Medicaid | TN |
Electronic endpoints 1
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| Direct Messaging Address | klein.nathaniel.clifford@covenanthealth.cernerdirect.com | Direct |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in NV, TN
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 2
Care Compare profile
Medicare Care Compare- Specialty
- Obstetrics/Gynecology
- Education
- Other, 2012
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
- Vanderbilt Integrated Providers LLC
Practice addresses (Care Compare)
1440 Cedar LN
Tullahoma, TN 37388-2486
Phone (931) 461-1101
Vanderbilt Integrated Providers Uro
Tullahoma, TN 37388-2486
Phone (931) 393-7056
Hospital & facility affiliations
Merit-based Incentive Payment System (MIPS)
- Final score
- 98.01 of 100
- Quality
- 87.65
- Promoting interoperability
- 100
- Improvement activities
- 40
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Master of Business Administration, Doctor of Medicine, Master of Science
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 60789 | TN | MD | Obstetrics & Gynecology Physician |
| MD0000060789 | TN | MD | Gynecology Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Meharry Medical College | Current | Accepting new patients | |
| Healthcare Partners Medical Group Coats LTD | Current | Accepting new patients | |
| Metropolitan Hospital Authority | Current | Accepting new patients |
Locations
1005 Dr Db Todd Jr Blvd
Nashville, TN 37208
Phone (615) 327-6000
1818 Albion St
Nashville, TN 37208
Phone (615) 341-4000
1919 Charlotte Ave
Nashville, TN 37203
Phone (615) 225-3700
1919 Charlotte Ave
Ste 101
Nashville, TN 37203
Phone (615) 341-4419
Interoperability endpoints
- nklein893480@direct.vumc.org
Organizations & group practices 4
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.
-
- Multi-Specialty Clinic/Center
- Nashville, TN
- NPI 1710206156
-
- Obstetrics & Gynecology Physician
- Jackson, TN
- NPI 1285924977
-
- Family Medicine Physician
- Las Vegas, NV
- NPI 1487631917
Hospital & facility affiliations 1
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
dba Vanderbilt Tullahoma-Harton Hospital
- General Acute Care Hospital
- Tullahoma, TN
- NPI 1831798719
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1341878400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1786924800000",
"number": "1780949297",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "609 MCFARLAND STREET",
"city": "KNOXVILLE",
"state": "TN",
"postal_code": "379950001",
"telephone_number": "423-492-7125"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "609 MCFARLAND ST",
"city": "MORRISTOWN",
"state": "TN",
"postal_code": "378143976",
"telephone_number": "423-492-7125"
}
],
"practiceLocations": [
{
"address_1": "1440 Cedar Ln",
"address_purpose": "LOCATION",
"city": "Tullahoma",
"state": "TN",
"postal_code": "373882485",
"country_code": "US",
"telephone_number": "615-322-5000",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "1919 Charlotte Ave Ste 101",
"address_purpose": "LOCATION",
"city": "Nashville",
"state": "TN",
"postal_code": "372032240",
"country_code": "US",
"telephone_number": "615-341-4419",
"fax_number": "615-341-4466",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "KLEIN",
"first_name": "NATHANIEL",
"middle_name": "CLIFFORD",
"name_prefix": "Dr.",
"credential": "M.D., M.B.A., M.S.",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2012-07-10",
"last_updated": "2026-08-17",
"certification_date": "2026-08-17",
"status": "A"
},
"taxonomies": [
{
"code": "207VG0400X",
"taxonomy_group": "",
"desc": "Obstetrics & Gynecology, Gynecology",
"state": "TN",
"license": "MD0000060789",
"primary": false
},
{
"code": "207V00000X",
"taxonomy_group": "",
"desc": "Obstetrics & Gynecology",
"state": "TN",
"license": "60789",
"primary": true
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "Q056848",
"state": "TN"
}
],
"endpoints": [
{
"endpointType": "DIRECT",
"endpointTypeDescription": "Direct Messaging Address",
"endpoint": "klein.nathaniel.clifford@covenanthealth.cernerdirect.com",
"affiliation": "N",
"use": "DIRECT",
"useDescription": "Direct",
"address_1": "609 McFarland St",
"city": "Morristown",
"state": "TN",
"country_code": "US",
"postal_code": "378143976",
"country_name": "United States",
"address_type": "DOM"
}
],
"other_names": []
}
Other providers in Morristown, TN
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 17, 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.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.