William Jeffrey Mason, MD
Infectious Disease Physician · Memphis, TN
William Jeffrey Mason, MD is an infectious disease physician with a practice address in Memphis, Tennessee, and NPI 1467509349, issued on Jan 4, 2007. Check the license (Tennessee MD0000041126, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- William Jeffrey Mason
- Credential
- MD
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- MD0000041126 TN
Self-reported in NPPES; status is on the state search - Practice location
- 1068 Cresthaven RD, Memphis, TN 38119
- Phone
- (901) 684-3490
- Enumerated
- Jan 4, 2007
- Record last updated
- Jul 5, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (901) 685-3499
- Medicare enrollment
- Enrolled (PECOS I20090707000707); accepts Medicare assignment
- Medical or professional school
- University Of Arkansas College Of Medicine, 2003
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 194 in Tennessee → Look up another NPI →
Also registered at 1068 Cresthaven RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Andrea Baker, CRNACertified Registered Nurse Anesthetist1750834123
- Karen Berry, MDPsychiatry Physician1770506677
- Dan Breckenridge, CRNACertified Registered Nurse Anesthetist1417064197
- Eugenio Carolino, CRNACertified Registered Nurse Anesthetist1710944517
- Rebecca CobbCertified Registered Nurse Anesthetist1689091613
Verify William Jeffrey Mason in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license MD0000041126Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average infectious disease physician in 2024
175 Medicare Part D claims for 50 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D.
Most prescribed
- Cephalexin34 claims
- Amoxicillin29 claims
- Doxycycline Hyclate28 claims
- Vancomycin Hcl15 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 2 group practices
- Saint Thomas Medical PartnersNashville, TN
- Tennessee ID Physicians PCColumbia, TN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Jeffrey Mason among 194 infectious disease physician records in Tennessee
William Jeffrey Mason, MD is one of 194 infectious disease physician records with a practice address in Tennessee. 82% 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 45% of them.
- NPI issued2007 · 45% of these records are older, 44% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated2003 · median 2005 among the 145 with a school on file
- Record last updated2011 · 32% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in Tennessee
There are 194 infectious disease physician records in Tennessee.
All 194 in Tennessee → Every provider in Memphis → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Daniel Murrell, M.D.Memphis, TN 381191477964039
- Mitchell Beatus, MDMemphis, TN 381201255378238
- Inderjeet Brar, M.D.Memphis, TN 381201558777821
- Manoj Jain, MD, MPHMemphis, TN 381201003858168
- Vishak Kumar, M.D,Memphis, TN 381201801412416
- Margarita Lamothe, M.D.Memphis, TN 381201306887187
- Ghalib Mannan, M.D.Memphis, TN 381201831144013
- Kristie Nowak, MDMemphis, TN 381201275598781
Common questions
What is William Jeffrey Mason, MD's NPI number?
William Jeffrey Mason, MD's National Provider Identifier (NPI) is 1467509349, issued on Jan 4, 2007. An NPI identifies a provider in billing; it is not a license.
Where is William Jeffrey Mason, MD located?
The NPPES record lists a practice address at 1068 Cresthaven RD, Memphis, TN, 38119. Phone: (901) 684-3490. Providers update this record themselves, so call before visiting.
How can I verify William Jeffrey Mason, MD's license?
NPPES lists Tennessee license number MD0000041126, 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 Jeffrey Mason, MD prescribe under Medicare Part D?
In 2024, William Jeffrey Mason, MD had 175 Medicare Part D claims for 50 beneficiaries; the average among infectious disease physician prescribers was 689. 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.