DR. KARL JOSEPH ZEREN D.D.S.
NPI 1265579379
Dentist - Periodontics in Timonium, MD

Active since January 30, 2007Opted out of Medicare · through Jan 1, 2027
9515 DEERECO RD, SUITE 308, TIMONIUM, MD 21093(410) 252-0871(410) 252-0431 Get Directions Write a Review

NPPES record last updated: April 14, 2015. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Karl Joseph Zeren D.d.s. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. KARL JOSEPH ZEREN D.D.S. (NPI 1265579379) is an individual periodontics provider in Timonium, Maryland, licensed in Maryland (5937) and active in the NPI registry since January 2007. He has opted out of Medicare through January 1, 2027 and remains eligible to order and refer.

NPPES Registry Identity

NPI1265579379
Entity TypeIndividualMale
Primary Taxonomy1223P0300X
Provider Legal NameDR. KARL JOSEPH ZERENCredential: D.D.S.
Location Address9515 DEERECO RD, SUITE 308Timonium, MD 21093-2116
Mailing Address9515 Deereco Rd, Suite 308Timonium, MD 21093-2116 · (410) 252-0871 · Fax (410) 252-0431
Fax(410) 252-0431
Sole ProprietorYes
Enumeration DateJanuary 30, 2007
Last NPPES UpdateApril 14, 2015
NPI 1265579379 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyDentist · PeriodonticsDental Providers
Taxonomy Code1223P0300X
License Licensed in MD · 5937
Definition

That specialty of dentistry which encompasses the prevention, diagnosis and treatment of diseases of the supporting and surrounding tissues of the teeth or their substitutes and the maintenance of the health, function and esthetics of these structures and tissues.

9515 DEERECO RD, Timonium, MD 21093

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Opted out of Medicare

Dr. Karl Joseph Zeren D.d.s. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from January 1, 2013 through January 1, 2027.

Opt-Out Effective DateJanuary 1, 2013
Opt-Out In Effect ThroughJanuary 1, 2027Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21093 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$94.08 typical visit price
range $60.73 – $183.44
Typical copayment $23.52 (range $15.18 – $45.86)
Most-billed visit code 99203
Established Patient
$75.47 typical visit price
range $19.60 – $149.17
Typical copayment $18.86 (range $4.90 – $37.29)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 8

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Psychiatry & Neurology (Psychiatry)
9515 DEERECO RD, SUITE 1001
TIMONIUM, MD 21093
Counselor (Mental Health)
9515 DEERECO RD
TIMONIUM, MD 21093
Clinical Nurse Specialist (Family Health)
9515 DEERECO RD, SUITE 205
TIMONIUM, MD 21093
Chiropractor
9515 DEERECO RD, SUITE 305
TIMONIUM, MD 21093
Chiropractor
9515 DEERECO RD, SUITE 305
TIMONIUM, MD 21093
Dentist (Periodontics)
9515 DEERECO RD, SUITE #308
TIMONIUM, MD 21093
Dentist (Oral and Maxillofacial Pathology)
9515 DEERECO RD, SUITE 308
TIMONIUM, MD 21093
Emergency Medicine
9515 DEERECO RD, SUITE 205
TIMONIUM, MD 21093

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Karl Zeren's NPI number?

The NPI number for Karl Zeren is 1265579379. It was assigned to this individual provider in the NPPES registry on January 30, 2007.

Where is Karl Zeren located?

Karl Zeren practices at 9515 Deereco Rd Suite 308, Timonium, MD 21093. The listed phone number is (410) 252-0871.

What is Karl Zeren's specialty?

The primary specialty registered for this NPI is Dentist, specializing in Periodontics, with taxonomy code 1223P0300X.

Is Karl Zeren enrolled in Medicare?

No. Karl Zeren has opted out of Medicare through January 1, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

What insurance does Karl Zeren accept?

Health plans from Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and Blue Cross and Blue Shield of Texas list Karl Zeren as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Karl Zeren was last updated on April 14, 2015. NPI Profile syncs with the weekly NPPES data releases published by CMS.