William Haley Fiske, MD
Gastroenterology Physician · Nashville, TN
William Haley Fiske, MD is a gastroenterology physician with a practice address in Nashville, Tennessee, and NPI 1871634295, issued on Feb 9, 2007. Check the license (Tennessee 45027, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- William Haley Fiske
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 45027 TN
Self-reported in NPPES; status is on the state search - Practice location
- 3601 Tvc, Nashville, TN 37232
- Phone
- (615) 322-3000
- Enumerated
- Feb 9, 2007
- Record last updated
- Mar 25, 2022
- Medicare enrollment
- Enrolled (PECOS I20090815000053); accepts Medicare assignment
- Medical or professional school
- Vanderbilt University School Of Medicine, 2003
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 384 in Tennessee → Look up another NPI →
Also registered at 3601 Tvc
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Matthew Abbate, MDInternal Medicine Physician1982796306
- Ty Abel, MDAnatomic Pathology & Clinical Pathology Physician1720175854
- Robert Abraham, MDClinical Cardiac Electrophysiology Physician1285781161
- Thomas Abramo, MDPediatric Emergency Medicine (Pediatrics) Physician1629165758
- Tarek Absi, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1578647681
- Lealani Acosta, MDNeurology Physician1003019902
Verify William Haley Fiske in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 45027Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% fewer Medicare Part D claims than the average gastroenterology physician in 2024
517 Medicare Part D claims for 240 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Gavilyte-G106 claims
- Omeprazole82 claims
- Peg-3350 And Electrolytes33 claims
- Pantoprazole Sodium28 claims
- Nortriptyline Hcl18 claims
- Linzess17 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.
The MIPS final score for 2023 (Medicare payment program): 97.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
One hospital affiliation
- Vanderbilt University Medical CenterNashville, TN · Acute Care Hospitals5 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
William Haley Fiske among 384 gastroenterology physician records in Tennessee
William Haley Fiske, MD is one of 384 gastroenterology physician records with a practice address in Tennessee. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 63% of them.
- NPI issued2007 · 63% of these records are older, 29% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2003 · median 2001 among the 255 with a school on file
- Record last updated2022 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Tennessee
There are 384 gastroenterology physician records in Tennessee.
All 384 in Tennessee → Every provider in Nashville → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- George Avant, MDNashville, TN 372321356433767
- Robert Coffey, MDNashville, TN 372321093813941
- Raymond Dubois, MDNashville, TN 372321124127550
- Lloyd King, MDNashville, TN 372321811084916
- Christopher Lind, MDNashville, TN 372321629176573
- Brad Maltz, MDNashville, TN 372321063449031
- Mark Miller, MDNashville, TN 372321699773150
- Jagdish Nachnani, M.D.Nashville, TN 372321891726303
Common questions
What is William Haley Fiske, MD's NPI number?
William Haley Fiske, MD's National Provider Identifier (NPI) is 1871634295, issued on Feb 9, 2007. An NPI identifies a provider in billing; it is not a license.
Where is William Haley Fiske, MD located?
The NPPES record lists a practice address at 3601 Tvc, Nashville, TN, 37232. Phone: (615) 322-3000. Providers update this record themselves, so call before visiting.
How can I verify William Haley Fiske, MD's license?
NPPES lists Tennessee license number 45027, 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 William Haley Fiske, MD prescribe under Medicare Part D?
In 2024, William Haley Fiske, MD had 517 Medicare Part D claims for 240 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is William Haley Fiske, MD's MIPS final score?
The 2023 MIPS final score is 97.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.