DR. JOHN E WILLIAMSON M.D.
NPI 1518025816
Obstetrics & Gynecology in Morristown, TN
About Dr. John E Williamson M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN E WILLIAMSON M.D. (NPI 1518025816) is an individual obstetrics & gynecology provider in Morristown, Tennessee, licensed in Tennessee (29482) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS, is affiliated with Owensboro Health Twin Lakes Medical Center, and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 3
Other Identifiers 6
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. John E Williamson M.d. 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
7Medicare enrollment records show John Williamson reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Middlesboro, KY 40965
- Reassigned Medicare billing, Kentucky enrollment
- 419 clinicians in this Medicare group
Knoxville, TN 37916
- Reassigned Medicare billing, Tennessee enrollment
- 89 clinicians in this Medicare group
Knoxville, TN 37932
- Reassigned Medicare billing, Tennessee enrollment
- 504 clinicians in this Medicare group
Lexington, KY 40509
- Reassigned Medicare billing, Kentucky enrollment
- 17 clinicians in this Medicare group
Horse Cave, KY 42749
- Reassigned Medicare billing, Kentucky enrollment
- 643 clinicians in this Medicare group
Ashland, KY 41101
- Reassigned Medicare billing, Kentucky enrollment
- Medicare enrollment name: Obhg Kentucky Psc
- 123 clinicians in this Medicare group
Powderly, KY 42367
- Reassigned Medicare billing, Kentucky enrollment
- 325 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Owensboro Health Twin Lakes Medical Center
Acute Care Hospitals · Leitchfield, KYMorristown Hamblen Hospital Association
Acute Care Hospitals · Morristown, TNPhysician 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 John Williamson's NPI number?
The NPI number for John Williamson is 1518025816. It was assigned to this individual provider in the NPPES registry on December 5, 2006.
Where is John Williamson located?
John Williamson practices at 609 Mcfarland St, Morristown, TN 37814. The listed phone number is (423) 492-7125.
What is John Williamson's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is John Williamson enrolled in Medicare?
Yes. John Williamson 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 John Williamson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Williamson reassigns Medicare benefits to 7 organizations: Appalachian Regional Healthcare, Inc. (Middlesboro, KY), Fort Sanders Perinatal Center (Knoxville, TN), Covenant Medical Group, Inc. (Knoxville, TN), Magdalene Karon, M.D., P.S.C. (Lexington, KY), Owensboro Health Medical Group Inc (Horse Cave, KY) and 2 more organizations, listed in the Medicare section above. 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 John Williamson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Williamson accept?
Health plans from Anthem Blue Cross and Blue Shield, BlueCross BlueShield of Tennessee, Cigna Healthcare and Oscar Insurance Company list John Williamson 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.
Is John Williamson affiliated with any hospitals?
According to CMS data, John Williamson is affiliated with Owensboro Health Twin Lakes Medical Center and Morristown Hamblen Hospital Association.
When was this NPI record last updated?
The NPPES record for John Williamson was last updated on May 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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. John E Williamson, M.D. · NPI 1518025816
Obstetrics & Gynecology physician in Morristown, Tennessee. Individual provider, active in the CMS NPPES registry since December 5, 2006.
## Identity
- **NPI:** 1518025816 (Entity type: Individual)
- **Enumerated:** December 5, 2006
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 29482 (Tennessee)
- **Sole proprietor:** No
## 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:** 7 organizations under Medicare reassignment (form CMS-855R): Appalachian Regional Healthcare, Inc. (NPI 1932415882, Middlesboro, KY); Fort Sanders Perinatal Center (NPI 1003811381, Knoxville, TN); Covenant Medical Group, Inc. (NPI 1457302010, Knoxville, TN); Magdalene Karon, M.D., P.S.C. (NPI 1235324690, Lexington, KY); Owensboro Health Medical Group Inc (NPI 1891177556, Horse Cave, KY); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Indiana University School Of Medicine, class of 1996
## Record status
- **NPPES last updated:** May 14, 2026
- **Other identifiers:** Medicaid 3819300 (TN); Other 38193011 (TN); Other TN0102 (TN); and 3 more
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Source: [NPI Profile](https://npiprofile.com/npi/1518025816) · Data from the CMS NPPES public registry.