Peter John Howanitz, MD

Peter John Howanitz is a Clinical Pathology/Laboratory Medicine Physician provider (Pathology) practicing in Brooklyn, NY, registered in the NPPES registry with NPI 1336128065 since 2006. The credential MD stands for Doctor of Medicine.

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NPI	1336128065
Entity type	Individual (Type 1)
Name	Peter John Howanitz
Credential	MD
Sex	Male
Practice address	BOX 37, 450 CLARKSON AVE UNIVERSITY HOSPITAL OF BROOKLYN, Brooklyn, NY, 11203
Phone	7182704522
Fax	7182704524
Enumeration date	2006-01-11
Last updated in NPPES	2025-09-11

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
207ZP0104X	Chemical Pathology Physician	Secondary	116941-1	NY
207ZP0105X	Clinical Pathology/Laboratory Medicine Physician	Primary	116941-1	NY

MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Copy-ready billing details

Provider: Peter Howanitz, MD
NPI: 1336128065
Taxonomy: 207ZP0105X (Clinical Pathology/Laboratory Medicine Physician)
Address: BOX 37, 450 CLARKSON AVE UNIVERSITY HOSPITAL OF BROOKLYN, Brooklyn, NY, 11203

Verify this record

Cross-check NPI 1336128065 against the authoritative CMS record: view Peter John Howanitz on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Peter Howanitz?

Peter Howanitz is registered in NPPES with the primary taxonomy of Clinical Pathology/Laboratory Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2025-09-11.