Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Kristen M. Haddon, DO

Pediatric Adolescent Medicine Physician in Waltham, MA · enumerated 2007.

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

National Provider Identifier

1659570380

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Registry record

Entity type Individual (Type 1)

Name Dr. Kristen M. Haddon

Credential DO

Sex Female

Practice address 355 Waverly Oaks Rd Ste 125, Waltham, MA, 02452

Phone (781) 891-3706

Fax (781) 891-3564

Enumeration date Jul 12, 2007

Last updated in NPPES Jun 16, 2025

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 259015 (MA) Secondary

2080A0000X Pediatric Adolescent Medicine Physician Allopathic & Osteopathic Physicians · License 259015 (MA) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
110100722A	Medicaid	MA	-

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 specialty is Kristen Haddon?

Kristen Haddon is registered in NPPES with the primary taxonomy of Pediatric Adolescent Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

Other providers at this practice address

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Yuliya Ostrerov Pediatrics Physician · Waltham, MA NPI 1437263332

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-06-16.