William Garrett Mortell, DO
Internal Medicine Physician · Louisville, KY
William Garrett Mortell, DO is an internal medicine physician with a practice address in Louisville, Kentucky, and NPI 1326741927, issued on Mar 23, 2023. Check the license (Kentucky TP191, as entered in NPPES) on the Kentucky Board of Medical Licensure; the Medicare figures below come from public CMS files.
- Name
- William Garrett Mortell
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- TP191 KY
Self-reported in NPPES; status is on the state search - Practice location
- 530 S Jackson St, Louisville, KY 40202
- Phone
- (502) 572-5779
- Enumerated
- Mar 23, 2023
- Record last updated
- Jul 27, 2026
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,526 in Kentucky → Look up another NPI →
Also registered at 530 S Jackson St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William Garrett Mortell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersKentucky Board of Medical Licensure
Search for license TP191Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average internal medicine physician in 2024
240 Medicare Part D claims for 63 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium24 claims
- Amlodipine Besylate20 claims
- Losartan Potassium11 claims
- Metformin Hcl11 claims
- Metoprolol Succinate11 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.
William Garrett Mortell among 1,526 internal medicine physician records in Kentucky
William Garrett Mortell, DO is one of 1,526 internal medicine physician records with a practice address in Kentucky. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 97% of them.
- NPI issued2023 · 97% of these records are older, under 1% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileNo · 67% of these records are
- Record last updated2026 · 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 Kentucky practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
457 internal medicine physician records list a practice address in Louisville
They are 457 of the 21,891 NPPES records with a practice address in Louisville, and 1,526 internal medicine physician records in Kentucky.
All 1,526 in Kentucky → Every provider in Louisville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- David Britt, M.D.Louisville, KY 402021265424824
- Keith Carter, M.D.Louisville, KY 402021134111792
- Barbara Casper, MDLouisville, KY 402021124013776
- Jason Chesney, MDLouisville, KY 402021407837917
- Matthew Fargen, MDLouisville, KY 402021376534719
- Haeshik Gorr, MDLouisville, KY 402021821083478
- Jennifer Koch, MDLouisville, KY 402021134114788
- Rick Lawson, M.D.Louisville, KY 402021689676504
Common questions
What is William Garrett Mortell, DO's NPI number?
William Garrett Mortell, DO's National Provider Identifier (NPI) is 1326741927, issued on Mar 23, 2023. An NPI identifies a provider in billing; it is not a license.
Where is William Garrett Mortell, DO located?
The NPPES record lists a practice address at 530 S Jackson St, Louisville, KY, 40202. Phone: (502) 572-5779. Providers update this record themselves, so call before visiting.
How can I verify William Garrett Mortell, DO's license?
NPPES lists Kentucky license number TP191, as entered by the provider. Search the Kentucky Board of Medical Licensure at https://web1.ky.gov/GenSearch/LicenseSearch.aspx?AGY=5. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Garrett Mortell, DO prescribe under Medicare Part D?
In 2024, William Garrett Mortell, DO had 240 Medicare Part D claims for 63 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.