Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary Ann D. Lowen, M.D.

Radiation Oncology Physician in Springfield, MA · enumerated 2006 · practices at Pioneer Valley Radiation Oncology, PC.

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

National Provider Identifier

1609846849

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Registry record

Entity type Individual (Type 1)

Name Mary Ann D. Lowen

Credential M.D.

Sex Female

Practice address 3350 Main St, D' Amour Center for Cancer Care, Springfield, MA, 01107

Phone (413) 794-9338

Fax (413) 794-5153

Enumeration date Jan 23, 2006

Last updated in NPPES Jul 9, 2007

Taxonomy & licenses

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 70926 (MA) Primary

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

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

Where does Mary Ann Lowen practice?

The practice location on file with NPPES is in Springfield, MA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Mary Ann Lowen?

The National Provider Identifier (NPI) for Mary Ann Lowen is 1609846849, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.