Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Lewis Kass, MD

Q: What type of organization is Lewis Kass, MD?

Lewis Kass, MD is registered in NPPES as a Pediatric Pulmonology Physician (its primary provider taxonomy).

Pediatric Pulmonology Physician in Mount Kisco, NY · enumerated 2007 · authorized official Denise Rowe, Billing Agent.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1285767988

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Registry record

Entity type Organization (Type 2)

Legal business name Lewis Kass, MD

Practice address 103 S Bedford Rd Ste 111, Mount Kisco, NY, 10549

Phone (732) 274-6700

Enumeration date Mar 13, 2007

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

2080P0214X Pediatric Pulmonology Physician Allopathic & Osteopathic Physicians · License 191964 (NY) Primary

Authorized official

Name Denise Rowe

Title Billing Agent

Phone (732) 274-6700

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Lewis Kass, MD?

Lewis Kass, MD is registered in NPPES as a Pediatric Pulmonology Physician (its primary provider taxonomy).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.