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PETER WALTER LEMENTOWSKI MD
NPI 1942366943
Orthopaedic Surgery - Adult Reconstructive Orthopaedic Surgery in Valhalla, NY

Active since December 28, 2006PECOS EnrolledAccepts Medicare Assignment
100 WOODS RD FL 4, VALHALLA, NY 10595(914) 789-2700(914) 789-2745 Get Directions Write a Review

NPPES record last updated: December 10, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 10, 2021, Feb 3, 2016 (2 updates tracked since 2016).

About Peter Walter Lementowski Md NPPES

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

PETER WALTER LEMENTOWSKI MD (NPI 1942366943) is an individual adult reconstructive orthopaedic surgery provider in Valhalla, New York, licensed in New York (245136) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS, is affiliated with Westchester Medical Center, and is a graduate of Georgetown University School Of Medicine (2001).

NPPES Registry Identity

NPI1942366943
Entity TypeIndividualMale
Primary Taxonomy207XS0114X
Provider Legal NamePETER WALTER LEMENTOWSKICredential: MD
Location Address100 WOODS RD FL 4Valhalla, NY 10595-1530
Mailing Address100 Woods Rd Fl 4Valhalla, NY 10595-1530 · (914) 789-2700 · Fax (914) 789-2745
Phone(914) 789-2700
Fax(914) 789-2745
Sole ProprietorNo
Medical School CMSGeorgetown University School Of MedicineGraduated 2001
Enumeration DateDecember 28, 2006
Last NPPES UpdateDecember 10, 20212 updates tracked since enumeration
NPPES CertifiedDecember 10, 2021
✔ NPI 1942366943 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic Surgery · Adult Reconstructive Orthopaedic SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207XS0114X
Licenses✔ Licensed in NY · 245136✔ Licensed in PA · MT188816
Definition
Recognized by several state medical boards as a fellowship subspecialty program of orthopaedic surgery, adult reconstructive orthopaedic surgeons deal with reconstructive procedures such as joint arthroplasty (i.e., hip and knee), osteotomy, arthroscopy, soft-tissue reconstruction, and a variety of other adult reconstructive surgical procedures.
100 WOODS RD FL 4, Valhalla, NY 10595
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Peter Walter Lementowski 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 ID6305923061
PECOS Enrollment IDI20080404000280
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.

Medicare Billing Reassignments

2

Medicare enrollment records show Peter Lementowski reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Westchester Medical Center Advanced Physician Services PC
Same address
Anesthesiology
100 WOODS RD, TAYLOR PAVILION - ROOM M229
Valhalla, NY 10595
  • Reassigned Medicare billing, New York enrollment
  • 1,663 clinicians in this Medicare group
NPI 1740687458 (914) 493-2844
Chs Physician Partners, PC
19 mi
Internal Medicine
207 GLEN COVE AVE, SUITE B
Sea Cliff, NY 11579
  • Reassigned Medicare billing, New York enrollment
  • 944 clinicians in this Medicare group
NPI 1245656073 (516) 676-1742

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 8

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.

Aspiration and/or injection of fluid from large joint 20610
This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.
118 services38 patients
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.
112 services89 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.
50 services36 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.
38 services16 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
30 services30 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
17 services17 patients

Hospital Affiliations CMS Care Compare

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

Westchester Medical Center

Acute Care Hospitals · Valhalla, NY
1/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number330234
Location100 Woods RdValhalla, NY 10595 · Westchester County
Emergency services Birthing friendly

Other Providers at the Same Location NPPES

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

DR. SAMUEL A HOISINGTON M.D.
Orthopaedic Surgery
100 WOODS RD FL 4
VALHALLA, NY 10595
Westchester County (914) 789-2700

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 Peter Lementowski's NPI number?

The NPI number for Peter Lementowski is 1942366943. It was assigned to this individual provider in the NPPES registry on December 28, 2006.

Where is Peter Lementowski located?

Peter Lementowski practices at 100 Woods Rd Fl 4, Valhalla, NY 10595. The listed phone number is (914) 789-2700.

What is Peter Lementowski's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Adult Reconstructive Orthopaedic Surgery, with taxonomy code 207XS0114X.

Is Peter Lementowski enrolled in Medicare?

Yes. Peter Lementowski 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.

Which organizations bill Medicare for Peter Lementowski's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Peter Lementowski reassigns Medicare benefits to 2 organizations: Westchester Medical Center Advanced Physician Services PC (Valhalla, NY) and Chs Physician Partners, PC (Sea Cliff, NY). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Peter Lementowski's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Peter Lementowski affiliated with any hospitals?

According to CMS data, Peter Lementowski is affiliated with Westchester Medical Center.

When was this NPI record last updated?

The NPPES record for Peter Lementowski was last updated on December 10, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.