Susan Leigh Williamson, M.D.
Internal Medicine Physician · Nashville, TN
Susan Leigh Williamson, M.D. is an internal medicine physician with a practice address in Nashville, Tennessee, and NPI 1437392917, issued on Apr 13, 2009. Check the license (Tennessee 47777, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Susan Leigh Williamson
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 47777 TN
DR.0071263 CO
Self-reported in NPPES; status is on the state search - Practice location
- 4220 Harding Pike, Nashville, TN 37205
- Phone
- (615) 222-6977
- Enumerated
- Apr 13, 2009
- Record last updated
- Aug 3, 2023
- Fax
- (615) 222-5322
- Medicaid IDs
- 1528892 TN
7100201060 KY - Medicare enrollment
- Enrolled (PECOS I20230818001773); accepts Medicare assignment
- Medical or professional school
- Texas A & M University System, Hsc, College Of Medicine, 2009
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,596 in Tennessee → Look up another NPI →
Also registered at 4220 Harding Pike
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Susan Leigh Williamson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 47777Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average internal medicine physician in 2024
95 Medicare Part D claims for 44 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Portercare Adventist Health SystemDenver, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Susan Leigh Williamson among 2,596 internal medicine physician records in Tennessee
Susan Leigh Williamson, M.D. is one of 2,596 internal medicine physician records with a practice address in Tennessee. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 66% of them.
- NPI issued2009 · 66% of these records are older, 32% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2009 · median 2003 among the 1,705 with a school on file
- Record last updated2023 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
613 internal medicine physician records list a practice address in Nashville
They are 613 of the 24,357 NPPES records with a practice address in Nashville, and 2,596 internal medicine physician records in Tennessee.
All 2,596 in Tennessee → Every provider in Nashville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Edwin Anderson, M.D.Nashville, TN 372051588655021
- Brian Cromwell, M.D.Nashville, TN 372051356332068
- David Heusinkveld, MDNashville, TN 372051962499582
- Allen Huong, MDNashville, TN 372051457310286
- David Jacobs, MDNashville, TN 372051952386393
- Sam Kayser, MDNashville, TN 372051730145640
- Kimberlyn Langley Brown, MDNashville, TN 372051063485373
- Michael Lipp, M.D.Nashville, TN 372051427016021
Common questions
What is Susan Leigh Williamson, M.D.'s NPI number?
Susan Leigh Williamson, M.D.'s National Provider Identifier (NPI) is 1437392917, issued on Apr 13, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Susan Leigh Williamson, M.D. located?
The NPPES record lists a practice address at 4220 Harding Pike, Nashville, TN, 37205. Phone: (615) 222-6977. Providers update this record themselves, so call before visiting.
How can I verify Susan Leigh Williamson, M.D.'s license?
NPPES lists Tennessee license number 47777, as entered by the provider. Search the Tennessee Board of Medical Examiners at https://www.tn.gov/health/licensure/me.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Susan Leigh Williamson, M.D. prescribe under Medicare Part D?
In 2024, Susan Leigh Williamson, M.D. had 95 Medicare Part D claims for 44 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.