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WALTER J NALESNIK JR. MD
NPI 1376616029
Internal Medicine in Lynn, MA

Active since November 17, 2006PECOS EnrolledAccepts Medicare AssignmentCLIA 22D0073183 · Waiver
225 BOSTON STREET, 204, LYNN, MA 01904(781) 595-9581(781) 595-9628 Get Directions Write a Review

NPPES record last updated: July 10, 2007. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Walter J Nalesnik Jr. Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WALTER J NALESNIK JR. MD (NPI 1376616029) is an individual internal medicine provider in Lynn, Massachusetts, licensed in Massachusetts (S3680) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS, holds a CLIA Waiver certificate valid through August 31, 2026, and is affiliated with North Shore Medical Center -.

NPPES Registry Identity

NPI1376616029
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameWALTER J NALESNIK JR.Credential: MD
Location Address225 BOSTON STREET, 204Lynn, MA 01904
Mailing Address225 Boston Street, 204Lynn, MA 01904 · (781) 595-9581 · Fax (781) 595-9628
Phone(781) 595-9581
Fax(781) 595-9628
Sole ProprietorNo
Medical School CMSWayne State University School Of MedicineGraduated 1982
Enumeration DateNovember 17, 2006
Last NPPES UpdateJuly 10, 2007
✔ NPI 1376616029 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MA · S3680
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
225 BOSTON STREET, Lynn, MA 01904
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Other Identifiers 10

OtherJ04507Bcbs
Other0400048United
Other9037Us Health
Medicare ID-Type UnspecifiedJ04507
Other703505Tufts
Medicare UPINC5127MA
Other65494Hphc
Medicaid9705121MA
OtherB1002301Cigna
Other80744Fallon

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Walter J Nalesnik Jr. Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4385690890
PECOS Enrollment IDI20050329000052
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 22D0073183

Walter Nalesnik MD · Lynn, MA
Active · expires Aug 31, 2026
CLIA Number22D0073183
Laboratory TypePhysician Office
Certificate Effective DateSeptember 1, 2024
Certificate Expiration DateAugust 31, 2026
Laboratory DirectorWalter Nalesnik
Laboratory Phone(781) 595-9581
Laboratory LocationWalter Nalesnik MD225 Boston Street Suite 204, Lynn, MA 01904
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Areas of Expertise CMS Part B claims 7

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
614 services213 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
541 services193 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000
An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.
255 services143 patients
Transitional care management services for problem of high complexity 99496
Transitional care management services are designed to ensure a smooth transition from a hospital to home or another care setting for patients with complex health issues. These services include medication management, patient education, and coordination with healthcare providers.
36 services25 patients
Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and G0180
This is a service where a doctor or authorized practitioner certifies that you require Medicare-covered home health services. They will communicate with the home health agency and review reports on your health status to ensure you receive appropriate care. This does not involve an in-person visit.
36 services22 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
35 services30 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

North Shore Medical Center -

Acute Care Hospitals · Salem, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220035
Location81 Highland AvenueSalem, MA 01970 · Essex County
Emergency services Birthing friendly

Massachusetts General Hospital

Acute Care Hospitals · Boston, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220071
Location55 Fruit StreetBoston, MA 02114 · Suffolk County
Emergency services Birthing friendly

Wentworth-Douglass Hospital

Acute Care Hospitals · Dover, NH
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number300018
Location789 Central AveDover, NH 03820 · Strafford County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01904 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$134.47 typical visit price
range $58.86 – $177.36
Typical copayment $33.61 (range $14.71 – $44.34)
Most-billed visit code 99204
Established Patient
$103.48 typical visit price
range $19.11 – $144.84
Typical copayment $25.87 (range $4.77 – $36.21)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
17 suppliers45 claims111 services$5.87 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
11 suppliers19 claims26 services$1.06 avg. paid by Medicare
Pharmacy dispensing fee for inhalation drug(s); per 30 days Q0513
DME-Other DME · category DE000N
4 suppliers13 claims13 services$26.14 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ROBERT R PENNELL MD PC
Orthopaedic Surgery
225 BOSTON STREET, SUITE 106
LYNN, MA 01904
Essex County (781) 593-5430

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Walter Nalesnik's NPI number?

The NPI number for Walter Nalesnik is 1376616029. It was assigned to this individual provider in the NPPES registry on November 17, 2006.

Where is Walter Nalesnik located?

Walter Nalesnik practices at 225 Boston Street 204, Lynn, MA 01904. The listed phone number is (781) 595-9581.

What is Walter Nalesnik's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Walter Nalesnik enrolled in Medicare?

Yes. Walter Nalesnik is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Does Walter Nalesnik hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 22D0073183) is associated with this NPI, valid through August 31, 2026. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Walter Nalesnik accept?

Health plans from Anthem Blue Cross and Blue Shield list Walter Nalesnik as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Walter Nalesnik affiliated with any hospitals?

According to CMS data, Walter Nalesnik is affiliated with North Shore Medical Center -, Massachusetts General Hospital and Wentworth-Douglass Hospital.

When was this NPI record last updated?

The NPPES record for Walter Nalesnik was last updated on July 10, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.