Dr. Walter J. Nalesnik Jr., MD
- Medicare services, 2024
- 1,836
- Medicare patients, 2024
- 234
- Part D claims, 2024
- 6,999
- Hospital affiliations
- 4
- Industry payments
- $97
- Practice address
- 225 Boston St, Lynn, MA 01904-3137
- Practice phone
- Call (781) 595-9581
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Primary Care North
Physician office · Lynn, Massachusetts
Find Dr. Nalesnik's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Walter J. Nalesnik Jr. is an internist in Lynn, Massachusetts
Dr. Nalesnik practices at Primary Care North in Lynn, Massachusetts.
Dr. Nalesnik's NPI, 1376616029, was assigned on November 17, 2006. Dr. Nalesnik graduated from Wayne State University School of Medicine in 1982. Dr. Nalesnik holds Massachusetts license S3680.
- NPI
- 1376616029NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4385690890
- NPI enumeration date
- November 17, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (781) 595-9581
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Walter J. Nalesnik Jr. practices at Primary Care North in Lynn, Massachusetts
Dr. Nalesnik's primary practice is Primary Care North, at 225 Boston St, Lynn, MA 01904-3137. The practice phone is (781) 595-9581.
- Primary Care North225 Boston St, Lynn, MA 01904-3137Phone(781) 595-9581
Source: Dmand AI Affiliation Data
Dr. Walter J. Nalesnik Jr. is affiliated with 6 sites of care
Dr. Nalesnik's primary practice is Primary Care North in Lynn, Massachusetts. Dr. Nalesnik is also affiliated with Massachusetts General Hospital. Dmand AI also links Dr. Nalesnik to 3 more hospitals and 1 home health agency, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Walter J. Nalesnik Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nalesnik practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Primary Care North | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Walter J. Nalesnik Jr. is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Nalesnik's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Nalesnik is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
Internists near Dr. Nalesnik
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Walter J. Nalesnik Jr. billed Medicare for 1,836 services in 2024
CMS data shows 1,836 Medicare services from Dr. Nalesnik across 8 procedure codes in 2024, for 234 Medicare patients. Medicare paid $104,840 for them. Every service was in an office.
Dr. Nalesnik's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,2312024: 1,226No change
- Other services
- 2023: 662024: 355438%
- Tests and treatments
- 2023: 2222024: 25515%
Dr. Nalesnik compared with the Massachusetts median for internists, 2024
- Dr. Nalesnik
- Massachusetts median
- Medicare services
- 1,836vs 4314.3 times
- Medicare patients
- 234vs 19421% above
- Part D claims
- 6,470vs 40216.1 times
Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Nalesnik's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Nalesnik?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Nalesnik and other internists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Walter J. Nalesnik Jr. treated 234 Medicare patients in 2024, average age 75
CMS counts 234 Medicare patients who saw Dr. Nalesnik in 2024. The largest group is 65 to 74, with 96 patients. 75% of them have high blood pressure, and 72% have high cholesterol. 26% are also on Medicaid. Their average risk score is 1.53, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Nalesnik's median patient age at 71, with 45% women.
Dr. Nalesnik's Medicare patients by age, 2024
Dr. Nalesnik's Medicare patients by sex, 2024
- Women10244%
- Men13256%
Chronic conditions among Dr. Nalesnik's Medicare patients, 2024
- High blood pressure75%
- High cholesterol72%
- Ischemic heart disease42%
- Arthritis39%
- Anxiety32%
- Diabetes31%
- Mood disorders30%
- COPD26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Nalesnik's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women45%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Walter J. Nalesnik Jr. wrote 6,999 Medicare Part D claims in 2024
In 2024, Dr. Nalesnik wrote 6,999 Medicare Part D claims for 394 patients. 87% of them were for generic drugs. CMS names the drug for 6,470 of them, across 96 drugs with 11 or more claims each, at $440,195 in total drug cost. In 2023, CMS named 7,032 claims across 107 drugs.
Dr. Nalesnik's Part D claims by kind of drug, 2024
- Generic6,078 claims87%
- Brand-name868 claims12%
- Other53 claims1%
Dr. Nalesnik's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Nalesnik's Part D claims, 2024
- Antibiotics1%89 of 6,999 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 7,0322024: 6,4708%
Drugs named by CMS: 96 in 2024, 107 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Walter J. Nalesnik Jr. offers telehealth to Medicare patients
Dr. Nalesnik accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Nalesnik as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Walter J. Nalesnik Jr. received $97 in industry payments from 2017 to 2021
CMS Open Payments shows 5 general payments to Dr. Nalesnik from 2 drug and device companies from 2017 to 2021. Food and beverage make up the largest share, 86% of the total. GlaxoSmithKline, LLC. paid the most, $83.
General payments to Dr. Nalesnik by program year, 2017 to 2021
General payments to Dr. Nalesnik by kind, 2017 to 2021
- Food and beverage$8386%
- Education$1414%
Companies that paid Dr. Nalesnik the most, 2017 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Walter J. Nalesnik Jr. graduated from Wayne State University School of Medicine
Dr. Nalesnik graduated from Wayne State University School of Medicine in 1982.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Walter J. Nalesnik Jr.'s profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Walter J. Nalesnik Jr.
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Walter J. Nalesnik Jr.'s NPI number?
Dr. Walter J. Nalesnik Jr.'s NPI number is 1376616029. It was assigned on November 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Walter J. Nalesnik Jr.?
Dr. Walter J. Nalesnik Jr. is an internist in Lynn, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Walter J. Nalesnik Jr. practice?
Dr. Nalesnik practices at 225 Boston St, Lynn, MA 01904-3137. Dr. Nalesnik's primary practice is Primary Care North in Lynn, Massachusetts. Dmand AI also links Dr. Nalesnik to 3 hospitals and 1 home health agency.
What is Dr. Walter J. Nalesnik Jr.'s office phone number?
The practice phone on file for Dr. Nalesnik is (781) 595-9581.
What is Dr. Walter J. Nalesnik Jr.'s medical license number?
Dr. Nalesnik holds Massachusetts license S3680.
Which hospitals is Dr. Walter J. Nalesnik Jr. affiliated with?
Dr. Nalesnik is affiliated with Massachusetts General Hospital. Dmand AI links Dr. Nalesnik to 3 more hospitals.
Does Dr. Walter J. Nalesnik Jr. accept Medicare?
Yes. CMS data shows Dr. Nalesnik billed Medicare for 1,836 services in 2024, and Dr. Nalesnik accepts Medicare assignment.
Does Dr. Walter J. Nalesnik Jr. offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Nalesnik as offering telehealth services.
How many Medicare patients does Dr. Walter J. Nalesnik Jr. see?
CMS counts 234 Medicare patients who saw Dr. Nalesnik in 2024, with an average age of 75.
What services does Dr. Walter J. Nalesnik Jr. bill to Medicare?
In 2024, Dr. Nalesnik's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and medicare service (G2211).
Show 4 more questionsShow fewer questions
Where did Dr. Walter J. Nalesnik Jr. go to medical school?
Dr. Nalesnik graduated from Wayne State University School of Medicine in 1982.
What drugs does Dr. Walter J. Nalesnik Jr. prescribe most?
In 2024 Medicare Part D data, Dr. Nalesnik's most prescribed drugs by claims were Atorvastatin Calcium, Lisinopril and Metoprolol Succinate.
Has Dr. Walter J. Nalesnik Jr. received payments from drug or device companies?
CMS Open Payments shows $97 in general payments to Dr. Nalesnik from 2 companies from 2017 to 2021. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. Walter J. Nalesnik Jr. been practicing?
Dr. Nalesnik graduated from medical school in 1982, 44 years ago.
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