Walter J. Nalesnik, MD
Internal Medicine Physician · Lynn, MA
Walter J. Nalesnik, MD is an internal medicine physician with a practice address in Lynn, Massachusetts, and NPI 1376616029, issued on Nov 17, 2006. Check the license (Massachusetts S3680, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Walter J. Nalesnik
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- S3680 MA
Self-reported in NPPES; status is on the state search - Practice location
- 225 Boston Street, Lynn, MA 01904
- Phone
- (781) 595-9581
- Enumerated
- Nov 17, 2006
- Record last updated
- Jul 10, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (781) 595-9628
- Medicaid ID
- 9705121 MA
- Medicare enrollment
- Enrolled (PECOS I20050329000052); accepts Medicare assignment
- Medical or professional school
- Wayne State University School Of Medicine, 1982
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Verify Walter J. Nalesnik in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license S3680Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average internal medicine physician in 2024
6,999 Medicare Part D claims for 394 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Atorvastatin Calcium712 claims
- Lisinopril366 claims
- Metoprolol Succinate339 claims
- Omeprazole320 claims
- Amlodipine Besylate293 claims
- Albuterol Sulfate Hfa277 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.
Walter J. Nalesnik among 6,825 internal medicine physician records in Massachusetts
Walter J. Nalesnik, MD is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% 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 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1982 · median 2004 among the 4,103 with a school on file
- Record last updated2007 · 64% 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 Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
19 internal medicine physician records list a practice address in Lynn
They are 19 of the 2,030 NPPES records with a practice address in Lynn, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Lynn → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Toryalai Amiri, M.D.Lynn, MA 019041255388047
- Laura Beeghly, MDLynn, MA 019041215988100
- Edward Braun, MDLynn, MA 019041003862798
- Ernesto Dasilva, MDLynn, MA 019041487600268
- Kurt Diebold, MDLynn, MA 019041114993516
- Carolyn Gonzalez, MDLynn, MA 019041598384364
- Ryan Gosselin, M.D., M.B.ALynn, MA 019041396972832
- James Gottschall, MDLynn, MA 019041932166196
Common questions
What is Walter J. Nalesnik, MD's NPI number?
Walter J. Nalesnik, MD's National Provider Identifier (NPI) is 1376616029, issued on Nov 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Walter J. Nalesnik, MD located?
The NPPES record lists a practice address at 225 Boston Street, Lynn, MA, 01904. Phone: (781) 595-9581. Providers update this record themselves, so call before visiting.
How can I verify Walter J. Nalesnik, MD's license?
NPPES lists Massachusetts license number S3680, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Walter J. Nalesnik, MD prescribe under Medicare Part D?
In 2024, Walter J. Nalesnik, MD had 6,999 Medicare Part D claims for 394 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.