Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Karl J. Zeren, D.D.S., LLC

Q: What is the NPI number for Karl J. Zeren, D.D.S., LLC?

The NPI for Karl J. Zeren, D.D.S., LLC is 1770816456, a Type 2 (organization) record in the CMS NPPES registry.

Periodontics in Timonium, MD · enumerated 2009 · authorized official Karl Zeren, President.

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

National Provider Identifier

1770816456

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Registry record

Entity type Organization (Type 2)

Legal business name Karl J. Zeren, D.D.S., LLC

Practice address 9515 Deereco Rd, Suite #308, Timonium, MD, 21093

Phone (410) 252-0871

Fax (410) 252-0431

Enumeration date Sep 11, 2009

Last updated in NPPES Sep 11, 2009

Taxonomy & classification

1223P0300X Periodontics Dental Providers Primary

Authorized official

Name Karl Zeren

Title President

Phone (410) 252-0871

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 is the NPI number for Karl J. Zeren, D.D.S., LLC?

The NPI for Karl J. Zeren, D.D.S., LLC is 1770816456, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Karl J. Zeren, D.D.S., LLC?

NPPES lists Karl Zeren (President) as the authorized official for this organization.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-09-11.