Stephan Antonius Kohnen, D.M.D.
Periodontics · Menifee, CA
Stephan Antonius Kohnen, D.M.D. is a periodontics with a practice address in Menifee, California, and NPI 1154681385, issued on May 22, 2012. Check the license (California DDS107483, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Stephan Antonius Kohnen
- Credential
- D.M.D.
- Primary taxonomy
- Periodontics 1223P0300X
- License numbers
- DDS107483 CA
22471 TX
Self-reported in NPPES; status is on the state search - Practice location
- 27757 Aspel RD Apt 923, Menifee, CA 92585
- Phone
- (832) 514-5578
- Enumerated
- May 22, 2012
- Record last updated
- Sep 29, 2023
- Entity
- Type 1 · individual
8 nearest periodontics records → All 929 in California → Look up another NPI →
Verify Stephan Antonius Kohnen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license DDS107483Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average periodontics in 2024
115 Medicare Part D claims for 37 beneficiaries, against an average of 277 among the 4,191 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin37 claims
- Ibuprofen33 claims
- Chlorhexidine Gluconate32 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: $15.64
1 payment: 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.
Stephan Antonius Kohnen among 929 periodontics records in California
Stephan Antonius Kohnen, D.M.D. is one of 929 periodontics records with a practice address in California. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 75% of them.
- NPI issued2012 · 75% of these records are older, 22% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2023 · 78% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Periodontics providers in California
There are 929 periodontics records in California.
All 929 in California → Every provider in Menifee → Periodontics nationwide →
The 8 periodontics records with the nearest ZIP codes
- Jae Choi, JAE CHOI, DDSMenifee, CA 925841659690451
- Fallon Livingston, DDSTemecula, CA 925911669909289
- Tinou RonconeTemecula, CA 925921689600942
- Saied Ahdout, DMDWildomar, CA 925951215032115
- Mary Jew, D.D.S.Irvine, CA 926041639485303
- Pilseong Kim, DDS,MSIrvine, CA 926041700800943
- Amir MostaghniIrvine, CA 926041447409180
- Bobby Soleiman, DDSMurrieta, CA 925621497863534
Common questions
What is Stephan Antonius Kohnen, D.M.D.'s NPI number?
Stephan Antonius Kohnen, D.M.D.'s National Provider Identifier (NPI) is 1154681385, issued on May 22, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Stephan Antonius Kohnen, D.M.D. located?
The NPPES record lists a practice address at 27757 Aspel RD Apt 923, Menifee, CA, 92585. Phone: (832) 514-5578. Providers update this record themselves, so call before visiting.
How can I verify Stephan Antonius Kohnen, D.M.D.'s license?
NPPES lists California license number DDS107483, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Stephan Antonius Kohnen, D.M.D. prescribe under Medicare Part D?
In 2024, Stephan Antonius Kohnen, D.M.D. had 115 Medicare Part D claims for 37 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.