Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sven-Christian Carlsson, OD

Optometrist in Quincy, MA · enumerated 2010.

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

National Provider Identifier

1891008397

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Registry record

Entity type Individual (Type 1)

Name Sven-Christian Carlsson

Credential OD

Sex Male

Practice address 1250 Hancock St, Quincy, MA, 02169

Phone (617) 774-0780

Fax (617) 774-0795

Enumeration date Jul 26, 2010

Last updated in NPPES Feb 4, 2021

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License OEG002334 (PA) Secondary

152W00000X Optometrist Eye and Vision Services Providers · License 4851 (MA) Primary

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

Is NPI 1891008397 active?

Yes, as of the latest NPPES snapshot, NPI 1891008397 is active (record last updated 2021-02-04).

How do I verify Sven-Christian Carlsson's NPI record?

Cross-check NPI 1891008397 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Mirza Baig Internal Medicine Physician · Quincy, MA NPI 1780683276 Gigi Anchan Pediatrics Physician · Quincy, MA NPI 1346225208 Harry Ward Internal Medicine Physician · Quincy, MA NPI 1861478505 Susan Beebe Pediatrics Physician · Quincy, MA NPI 1740266378 Eric Anderson Pediatrics Physician · Quincy, MA NPI 1205812443 Kimberly Zajac Speech-Language Pathologist · Quincy, MA NPI 1093785073 Annette Grace Pediatric Nurse Practitioner · Quincy, MA NPI 1285608760 Ann Curran Pediatric Nurse Practitioner · Quincy, MA NPI 1548234990

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-02-04.