DR. NATHANIEL CLIFFORD KLEIN M.D., M.B.A., M.S.
NPI 1780949297
Obstetrics & Gynecology in Morristown, TN
About Dr. Nathaniel Clifford Klein M.d., M.b.a., M.s. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. NATHANIEL CLIFFORD KLEIN M.D., M.B.A., M.S. (NPI 1780949297) is an individual obstetrics & gynecology provider in Morristown, Tennessee, licensed in Tennessee (60789) and active in the NPI registry since July 2012. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2012).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Nathaniel Clifford Klein M.d., M.b.a., M.s. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
4Medicare enrollment records show Nathaniel Klein reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Knoxville, TN 37932
- Reassigned Medicare billing, Tennessee enrollment
- 504 clinicians in this Medicare group
Nashville, TN 37208
- Reassigned Medicare billing, Tennessee enrollment
- 118 clinicians in this Medicare group
Nashville, TN 37208
- Reassigned Medicare billing, Tennessee enrollment
- 114 clinicians in this Medicare group
Jackson, TN 38301
- Reassigned Medicare billing, Tennessee enrollment
- 92 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 37814 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 14
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Nathaniel Klein's NPI number?
The NPI number for Nathaniel Klein is 1780949297. It was assigned to this individual provider in the NPPES registry on July 10, 2012.
Where is Nathaniel Klein located?
Nathaniel Klein practices at 609 Mcfarland St, Morristown, TN 37814. The listed phone number is (423) 492-7125.
What is Nathaniel Klein's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Nathaniel Klein enrolled in Medicare?
Yes. Nathaniel Klein is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Nathaniel Klein's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nathaniel Klein reassigns Medicare benefits to 4 organizations: Covenant Medical Group, Inc. (Knoxville, TN), Meharry Medical College (Nashville, TN), Metropolitan Hospital Authority (Nashville, TN) and Obhg Tennessee, P.C. (Jackson, TN). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Nathaniel Klein's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Nathaniel Klein accept?
Health plans from BlueCross BlueShield of Tennessee and Oscar Insurance Company list Nathaniel Klein as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Nathaniel Klein was last updated on August 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Nathaniel Clifford Klein, M.D., M.B.A., M.S. · NPI 1780949297
Obstetrics & Gynecology physician in Morristown, Tennessee. Individual provider, active in the CMS NPPES registry since July 10, 2012.
## Identity
- **NPI:** 1780949297 (Entity type: Individual)
- **Enumerated:** July 10, 2012
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 60789 (Tennessee)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 609 MCFARLAND ST, Morristown, TN 37814-3976
- **Phone:** (423) 492-7125
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Covenant Medical Group, Inc. (NPI 1457302010, Knoxville, TN); Meharry Medical College (NPI 1205859279, Nashville, TN); Metropolitan Hospital Authority (NPI 1710206156, Nashville, TN); Obhg Tennessee, P.C. (NPI 1285924977, Jackson, TN) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2012
## Record status
- **NPPES last updated:** August 17, 2026
- **Other identifiers:** Medicaid Q056848 (TN)
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Source: [NPI Profile](https://npiprofile.com/npi/1780949297) · Data from the CMS NPPES public registry.