Nickolas Tyler Walker, M.D.
Emergency Medicine Physician · Clarksville, TN
Nickolas Tyler Walker, M.D. is an emergency medicine physician with a practice address in Clarksville, Tennessee, and NPI 1912266289, issued on May 8, 2012. Check the license (Tennessee 53039, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Nickolas Tyler Walker
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 53039 TN
Self-reported in NPPES; status is on the state search - Practice location
- 651 Dunlop LN, Clarksville, TN 37040
- Phone
- (931) 562-1000
- Enumerated
- May 8, 2012
- Record last updated
- Jan 12, 2016 (not updated in 10 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,174 in Tennessee → Look up another NPI →
Also registered at 651 Dunlop LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kimble ArnoldEmergency Medicine Physician1689318230
- Mark Arrington, CRNACertified Registered Nurse Anesthetist1003858911
- Holly Austin, PA-CPhysician Assistant1437403144
- Sharen Baker, CRNACertified Registered Nurse Anesthetist1548407042
Verify Nickolas Tyler Walker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 53039Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% more Medicare Part D claims than the average emergency medicine physician in 2024
409 Medicare Part D claims for 260 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims. 52 claims were for opioids.
Most prescribed
- Cephalexin41 claims
- Hydrocodone-Acetaminophen35 claims
- Methylprednisolone35 claims
- Prednisone35 claims
- Amoxicillin-Clavulanate Potass25 claims
- Ondansetron Odt18 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.
Nickolas Tyler Walker among 1,174 emergency medicine physician records in Tennessee
Nickolas Tyler Walker, M.D. is one of 1,174 emergency medicine physician records with a practice address in Tennessee. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 64% of them.
- NPI issued2012 · 64% of these records are older, 33% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2016 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
33 emergency medicine physician records list a practice address in Clarksville
They are 33 of the 3,514 NPPES records with a practice address in Clarksville, and 1,174 emergency medicine physician records in Tennessee.
All 1,174 in Tennessee → Every provider in Clarksville → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Darcey Crawford, MDClarksville, TN 370401841247988
- Randall Ellis, M.D.Clarksville, TN 370401396784138
- Troy Harris, MDClarksville, TN 370401841234432
- Sanford Herman, M.D.Clarksville, TN 370401619941200
- Jackie Hinds, M.D.Clarksville, TN 370401346277324
- Stephen Kent, M.D.Clarksville, TN 370401346295425
- Manickam Krishnamurthy, MDClarksville, TN 370401134175987
- Randle Likes, DOClarksville, TN 370401477500445
Common questions
What is Nickolas Tyler Walker, M.D.'s NPI number?
Nickolas Tyler Walker, M.D.'s National Provider Identifier (NPI) is 1912266289, issued on May 8, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Nickolas Tyler Walker, M.D. located?
The NPPES record lists a practice address at 651 Dunlop LN, Clarksville, TN, 37040. Phone: (931) 562-1000. Providers update this record themselves, so call before visiting.
How can I verify Nickolas Tyler Walker, M.D.'s license?
NPPES lists Tennessee license number 53039, 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 Nickolas Tyler Walker, M.D. prescribe under Medicare Part D?
In 2024, Nickolas Tyler Walker, M.D. had 409 Medicare Part D claims for 260 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.