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KENNETH S LENG M.D.
NPI 1700823440
Anesthesiology in Newton, MA

Active since June 01, 2006PECOS EnrolledAccepts Medicare Assignment
2014 WASHINGTON ST, NEWTON, MA 02462(617) 243-6298 Get Directions Write a Review

NPPES record last updated: July 10, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 10, 2023, Mar 7, 2022 (2 updates tracked since 2022).

About Kenneth S Leng M.d. NPPES

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

KENNETH S LENG M.D. (NPI 1700823440) is an individual anesthesiology provider in Newton, Massachusetts, licensed in Massachusetts (225638) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Newton-wellesley Hospital, and is a graduate of Tufts University School Of Medicine (2001).

NPPES Registry Identity

NPI1700823440
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameKENNETH S LENGCredential: M.D.
Location Address2014 WASHINGTON STNewton, MA 02462-1607
Mailing Address2014 Washington StNewton, MA 02462-1607 · (617) 243-6298
Phone(617) 243-6298
Sole ProprietorNo
Medical School CMSTufts University School Of MedicineGraduated 2001
Enumeration DateJune 1, 2006
Last NPPES UpdateJuly 10, 20232 updates tracked since enumeration
NPPES CertifiedJuly 10, 2023
✔ NPI 1700823440 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in MA · 225638
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
2014 WASHINGTON ST, Newton, MA 02462
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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

Kenneth S Leng M.d. 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 ID3678501996
PECOS Enrollment IDI20050728000690
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 Reassignment

Medicare enrollment records show Kenneth Leng reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Commonwealth Anesthesia Associates, Inc
Same address
Pain Medicine
2014 WASHINGTON ST, NEWTON WELLESLEY HOSPITAL DEPARTMENT OF ANESTHESIOLOGY
Newton, MA 02462
  • Reassigned Medicare billing, Massachusetts enrollment
  • 116 clinicians in this Medicare group
NPI 1184645194 (617) 243-6298

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 6

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.

Anesthesia for other procedure on large bowel using an endoscope 00811
Anesthesia for an endoscopic procedure on the large bowel ensures comfort and relaxation during the procedure. You'll be given medication to make you drowsy or asleep, eliminating any discomfort. The medication can be administered through a vein or inhaled.
29 services29 patients
Anesthesia for procedure for total knee joint replacement 01402
Anesthesia for a total knee joint replacement numbs your body to eliminate pain during surgery. This could be general anesthesia where you're unconscious, or regional anesthesia where only the leg is numb. It's administered by a specialist, ensuring safety and comfort.
24 services24 patients
Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) 64447
This procedure involves injecting a numbing agent and/or steroid into a nerve in your thigh. It's done to alleviate pain or inflammation. A needle will be carefully positioned near the nerve, and the medicine will be administered.
24 services24 patients
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731
This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.
19 services19 patients
Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand 01810
Anesthesia for procedures on the forearm, wrist, and hand involves administering medication to block sensation in these areas. This helps ensure comfort and painlessness during surgeries or treatments involving nerves, muscles, tendons, and tissue in these regions.
17 services17 patients
Anesthesia for total hip replacement 01214
Anesthesia for total hip replacement is a medical service where medication is given to eliminate pain during surgery. Two types are commonly used: general anesthesia, making you unconscious, or spinal anesthesia, numbing the lower body. The choice depends on your health and your doctor's recommendation.
15 services15 patients

Hospital Affiliations CMS Care Compare

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

Newton-Wellesley Hospital

Acute Care Hospitals · Newton, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220101
Location2014 Washington StreetNewton, MA 02462 · Middlesex County
Emergency services Birthing friendly

Other Providers at the Same Location NPPES 20

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

DR. ANDREA L RUSSO M.D.
Radiology (Radiation Oncology)
2014 WASHINGTON ST
NEWTON, MA 02462
Middlesex County (617) 219-1200
MAUREEN LAVELLE LICSW
Social Worker (Clinical)
2014 WASHINGTON ST
NEWTON, MA 02462
Middlesex County (617) 243-6664
SHALYNN DOHERTY
Physician Assistant
2014 WASHINGTON ST
NEWTON, MA 02462
Middlesex County (617) 831-7100
MR. KEVIN YAN KOENDERS PA-C
Physician Assistant (Surgical)
2014 WASHINGTON ST, DEPARTMENT OF ORTHOPEDICS
NEWTON, MA 02462
Middlesex County (617) 219-1674
NATHAN DANIEL BUCKLEY PA-C
Physician Assistant (Surgical)
2014 WASHINGTON ST
NEWTON, MA 02462
Middlesex County (617) 243-6000
DR. RONALD KENNETH PYE M.D.
Pediatrics (Neonatal-Perinatal Medicine)
2014 WASHINGTON ST, SCN 6 NORTH
NEWTON, MA 02462
Middlesex County (617) 243-6296
DR. TODD EARL ABBOTT M.D.
Pathology (Anatomic Pathology & Clinical Pathology)
2014 WASHINGTON ST, NEWTON-WELLESLEY HOSPITAL
NEWTON, MA 02462
Middlesex County (434) 964-1637
DIANE MARIE POULIN RN,NP
Nurse Practitioner (Adult Health)
2014 WASHINGTON ST, NEWTON WELLESLEY HOSPITAL DEPT. OF ANESTHESIA
NEWTON, MA 02462
Middlesex County (617) 243-6298

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 Kenneth Leng's NPI number?

The NPI number for Kenneth Leng is 1700823440. It was assigned to this individual provider in the NPPES registry on June 1, 2006.

Where is Kenneth Leng located?

Kenneth Leng practices at 2014 Washington St, Newton, MA 02462. The listed phone number is (617) 243-6298.

What is Kenneth Leng's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Kenneth Leng enrolled in Medicare?

Yes. Kenneth Leng 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 organization bills Medicare for Kenneth Leng's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kenneth Leng reassigns Medicare benefits to Commonwealth Anesthesia Associates, Inc (Newton, MA). The 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 Kenneth Leng's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Kenneth Leng affiliated with any hospitals?

According to CMS data, Kenneth Leng is affiliated with Newton-Wellesley Hospital.

When was this NPI record last updated?

The NPPES record for Kenneth Leng was last updated on July 10, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.