William Neill Johnson, MD
Internal Medicine Physician · Las Vegas, NV
William Neill Johnson, MD is an internal medicine physician with a practice address in Las Vegas, Nevada, and NPI 1104385269, issued on Mar 18, 2019. Check the license (Nevada 22548, as entered in NPPES) on the Nevada State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- William Neill Johnson
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 22548 NV
Self-reported in NPPES; status is on the state search - Practice location
- 1701 W Charleston Blvd Ste 230, Las Vegas, NV 89102
- Phone
- (702) 671-2358
- Enumerated
- Mar 18, 2019
- Record last updated
- Dec 22, 2022
- Fax
- (702) 671-2376
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,229 in Nevada → Look up another NPI →
Also registered at 1701 W Charleston Blvd Ste 230
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William Neill Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNevada State Board of Medical Examiners
Search for license 22548Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
68 Medicare Part D claims for 16 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 46% 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.
Industry payments in 2024: $13.48
1 payment: food and beverage; the largest payer was Boehringer Ingelheim Pharmaceuticals, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
William Neill Johnson among 1,229 internal medicine physician records in Nevada
William Neill Johnson, MD is one of 1,229 internal medicine physician records with a practice address in Nevada. 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 2019, is newer than 80% of them.
- NPI issued2019 · 80% of these records are older, 16% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2022 · 43% 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 Nevada practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
716 internal medicine physician records list a practice address in Las Vegas
They are 716 of the 65,269 NPPES records with a practice address in Las Vegas, and 1,229 internal medicine physician records in Nevada.
All 1,229 in Nevada → Every provider in Las Vegas → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
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- William Gramlich, MDLas Vegas, NV 891021891765707
- Michael Jacobs, M.D., PH.D.Las Vegas, NV 891021053300913
- George Kaiser, M.D.Las Vegas, NV 891021710965348
- Nazia Khan, M.D.Las Vegas, NV 891021508844119
- Alan Marvin, MDLas Vegas, NV 891021326011800
Common questions
What is William Neill Johnson, MD's NPI number?
William Neill Johnson, MD's National Provider Identifier (NPI) is 1104385269, issued on Mar 18, 2019. An NPI identifies a provider in billing; it is not a license.
Where is William Neill Johnson, MD located?
The NPPES record lists a practice address at 1701 W Charleston Blvd Ste 230, Las Vegas, NV, 89102. Phone: (702) 671-2358. Providers update this record themselves, so call before visiting.
How can I verify William Neill Johnson, MD's license?
NPPES lists Nevada license number 22548, as entered by the provider. Search the Nevada State Board of Medical Examiners at https://medboard.nv.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Neill Johnson, MD prescribe under Medicare Part D?
In 2024, William Neill Johnson, MD had 68 Medicare Part D claims for 16 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.