William Lewis McMahon, MD MS
Emergency Medicine Physician · Suwanee, GA
William Lewis McMahon, MD MS is an emergency medicine physician with a practice address in Suwanee, Georgia, and NPI 1891853420, issued on Dec 5, 2006. Check the license (Georgia 45885, as entered in NPPES) on the Georgia Composite Medical Board; the Medicare figures below come from public CMS files.
- Name
- William Lewis McMahon
- Credential
- MD MS
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 45885 GA
Self-reported in NPPES; status is on the state search - Practice location
- 4905 Winding Rose Dr, Suwanee, GA 30024
- Phone
- (770) 313-2034
- Enumerated
- Dec 5, 2006
- Record last updated
- Nov 20, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicaid ID
- 00809322B GA
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,685 in Georgia → Look up another NPI →
Verify William Lewis McMahon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersGeorgia Composite Medical Board
Search for license 45885Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average emergency medicine physician in 2024
16 Medicare Part D claims, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% 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.
William Lewis McMahon among 1,685 emergency medicine physician records in Georgia
William Lewis McMahon, MD MS is one of 1,685 emergency medicine physician records with a practice address in Georgia. 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 59% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2014 · 58% 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 Georgia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Georgia
There are 1,685 emergency medicine physician records in Georgia.
All 1,685 in Georgia → Every provider in Suwanee → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Earl Grubbs, MDJohns Creek, GA 300221902863004
- Sujoy Gulati, MDAlpharetta, GA 300221417150632
- Nicole Battaglioli, M.D.Decatur, GA 300301295173730
- Paula Burgess, M.D.Decatur, GA 300301861746752
- Dahlia Hassani, MDDecatur, GA 300301649297656
- Constance Richards, MDDecatur, GA 300301427347681
- Stephanie Scott, M.D.Decatur, GA 300301215190772
- Sulieman Wazeerud-Din, M.DDecatur, GA 300321861699159
Common questions
What is William Lewis McMahon, MD MS's NPI number?
William Lewis McMahon, MD MS's National Provider Identifier (NPI) is 1891853420, issued on Dec 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Lewis McMahon, MD MS located?
The NPPES record lists a practice address at 4905 Winding Rose Dr, Suwanee, GA, 30024. Phone: (770) 313-2034. Providers update this record themselves, so call before visiting.
How can I verify William Lewis McMahon, MD MS's license?
NPPES lists Georgia license number 45885, as entered by the provider. Search the Georgia Composite Medical Board at https://medicalboard.georgia.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Lewis McMahon, MD MS prescribe under Medicare Part D?
In 2024, William Lewis McMahon, MD MS had 16 Medicare Part D claims; 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.