Karl Joseph Zeren, D.D.S.
Periodontics · Timonium, MD
Karl Joseph Zeren, D.D.S. is a periodontics with a practice address in Timonium, Maryland, and NPI 1265579379, issued on Jan 30, 2007. Check the license (Maryland 5937, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karl Joseph Zeren
- Credential
- D.D.S.
- Primary taxonomy
- Periodontics 1223P0300X
- License number
- 5937 MD
Self-reported in NPPES; status is on the state search - Practice location
- 9515 Deereco RD, Timonium, MD 21093
- Phone
- (410) 252-0871
- Enumerated
- Jan 30, 2007
- Record last updated
- Apr 14, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (410) 252-0431
- Entity
- Type 1 · individual
8 nearest periodontics records → All 167 in Maryland → Look up another NPI →
Also registered at 9515 Deereco RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Elizabeth Kimmitt, MDEmergency Medicine Physician1952344889
- James Sciubba, D.M.D., PH.D.Oral and Maxillofacial Pathology Dentistry1780657130
Verify Karl Joseph Zeren in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license 5937Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% fewer Medicare Part D claims than the average periodontics in 2024
203 Medicare Part D claims for 70 beneficiaries, against an average of 277 among the 4,191 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin69 claims
- Ibuprofen40 claims
- Chlorhexidine Gluconate34 claims
- Clindamycin Hcl19 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $249.26
5 payments; by number, the most common kind was food and beverage; the largest payer was Zimvie Inc. The 2,966 providers of this specialty with any payment received $1,338.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Karl Joseph Zeren among 167 periodontics records in Maryland
Karl Joseph Zeren, D.D.S. is one of 167 periodontics records with a practice address in Maryland. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 31% of them.
- NPI issued2007 · 31% of these records are older, 41% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2015 · 74% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223P0300X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Periodontics providers in Maryland
There are 167 periodontics records in Maryland.
All 167 in Maryland → Every provider in Timonium → Periodontics nationwide →
The 8 periodontics records with the nearest ZIP codes
- William Mislowsky, DDSLutherville, MD 210931043321235
- Brandon West, DDS, MSLutherville Timonium, MD 210931528613718
- David Mugford, DMD PACrofton, MD 211141588796353
- Ashley Seals, DDS, MSCrofton, MD 211141407295819
- Peter Joseph, D.M.D.Owings Mills, MD 211171366739278
- Daniel Karlin, D.D.S.Owings Mills, MD 211171336252162
- Mark Keiser, D.D.S.Owings Mills, MD 211171124315833
- Shafia KhawajaOwings Mills, MD 211171316394687
Common questions
What is Karl Joseph Zeren, D.D.S.'s NPI number?
Karl Joseph Zeren, D.D.S.'s National Provider Identifier (NPI) is 1265579379, issued on Jan 30, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Karl Joseph Zeren, D.D.S. located?
The NPPES record lists a practice address at 9515 Deereco RD, Timonium, MD, 21093. Phone: (410) 252-0871. Providers update this record themselves, so call before visiting.
How can I verify Karl Joseph Zeren, D.D.S.'s license?
NPPES lists Maryland license number 5937, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
How much does Karl Joseph Zeren, D.D.S. prescribe under Medicare Part D?
In 2024, Karl Joseph Zeren, D.D.S. had 203 Medicare Part D claims for 70 beneficiaries; the average among periodontics prescribers was 277. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.