Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Maryann Katherine Rubis, O.D.

Optometrist in Springfield, MA · enumerated 2006.

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

National Provider Identifier

1659380194

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Registry record

Entity type Individual (Type 1)

Name Dr. Maryann Katherine Rubis

Credential O.D.

Sex Female

Practice address 1515 Allen St, Suite E, Springfield, MA, 01118

Phone (413) 782-0030

Fax (413) 796-1985

Enumeration date Aug 5, 2006

Last updated in NPPES Jul 9, 2007

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 3541 (MA) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier	Type	State	Issuer
0355852	Medicaid	MA	-
W15794	Other	MA	BLUE CROSS BLUE SHIELD
3541	Other	MA	MASSACHUSETTS LICENSE

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 Maryann Rubis?

Maryann Rubis is registered in NPPES with the primary taxonomy of Optometrist. 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.

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