William Lang, MD
Internal Medicine Physician · Providence, RI
William Lang, MD is an internal medicine physician with a practice address in Providence, Rhode Island, and NPI 1801388970, issued on Jun 4, 2018. Check the license (Rhode Island MD17518, as entered in NPPES) on the Rhode Island Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- William Lang
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- MD17518 RI
LP04359 RI
Self-reported in NPPES; status is on the state search - Practice location
- 164 Summit Ave, Providence, RI 02906
- Phone
- (401) 793-4489
- Enumerated
- Jun 4, 2018
- Record last updated
- Jul 2, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (401) 793-4047
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,033 in Rhode Island → Look up another NPI →
Also registered at 164 Summit Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Lisha AndrewRegistered Dietitian1164992558
Verify William Lang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersRhode Island Board of Medical Licensure and Discipline
Search for license MD17518Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average internal medicine physician in 2024
183 Medicare Part D claims for 44 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Atorvastatin Calcium24 claims
- Clopidogrel16 claims
- Amlodipine Besylate15 claims
- Metoprolol Succinate15 claims
- Isosorbide Mononitrate Er13 claims
- Ezetimibe11 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: $270.34
1 payment: education; the largest payer was Abbott Laboratories. 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 Lang among 1,033 internal medicine physician records in Rhode Island
William Lang, MD is one of 1,033 internal medicine physician records with a practice address in Rhode Island. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 68% of them.
- NPI issued2018 · 68% of these records are older, 29% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2021 · 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 207R00000X and a Rhode Island practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
511 internal medicine physician records list a practice address in Providence
They are 511 of the 9,647 NPPES records with a practice address in Providence, and 1,033 internal medicine physician records in Rhode Island.
All 1,033 in Rhode Island → Every provider in Providence → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Nadeem Anis, MDProvidence, RI 029061275513442
- James Atkinson, MDProvidence, RI 029061003894825
- Geoffrey Berg, MDProvidence, RI 029061902804313
- Ehab Daoud, MDProvidence, RI 029061144208299
- Kwame Dapaah-Afriyie, MDProvidence, RI 029061053399105
- Oscar Glieberman, M.D.Providence, RI 029061477504637
- Mary Hohenhaus, MDProvidence, RI 029061164476370
- Jeanne Oliva, MDProvidence, RI 029061831146877
Common questions
What is William Lang, MD's NPI number?
William Lang, MD's National Provider Identifier (NPI) is 1801388970, issued on Jun 4, 2018. An NPI identifies a provider in billing; it is not a license.
Where is William Lang, MD located?
The NPPES record lists a practice address at 164 Summit Ave, Providence, RI, 02906. Phone: (401) 793-4489. Providers update this record themselves, so call before visiting.
How can I verify William Lang, MD's license?
NPPES lists Rhode Island license number MD17518, as entered by the provider. Search the Rhode Island Board of Medical Licensure and Discipline at https://healthri.mylicense.com/Verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Lang, MD prescribe under Medicare Part D?
In 2024, William Lang, MD had 183 Medicare Part D claims for 44 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.