Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Karen Ottenstein, MD

Family Medicine Physician in Westport, MA · enumerated 2006 · practices at Hood Nadeau LLC.

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

National Provider Identifier

1083628382

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Karen Ottenstein

Credential MD

Sex Female

Practice address 793 Main Rd, Westport, MA, 02790

Phone (508) 636-7890

Fax (508) 636-7299

Enumeration date Jul 29, 2006

Last updated in NPPES May 30, 2018

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 021409 (ME) Primary

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

Other identifiers

Identifier	Type	State	Issuer
218430099	Medicaid	ME	-

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

How do I verify Karen Ottenstein's NPI record?

Cross-check NPI 1083628382 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1083628382 active?

Yes, as of the latest NPPES snapshot, NPI 1083628382 is active (record last updated 2018-05-30).

Other providers at this practice address

Browse all →

Hood Nadeau LLC Family Medicine Physician · Westport, MA NPI 1770576282 Cathleen Hood Family Medicine Physician · Westport, MA NPI 1447238852

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-05-30.