NPPES file of Aug 9, 2026

Joseph Charles Serflek, DDS

General Practice Dentistry · New Berlin, WI

Joseph Charles Serflek, DDS is a general practice dentistry with a practice address in New Berlin, Wisconsin, and NPI 1881764983, issued on Nov 8, 2006. Check the license (Wisconsin 5001492-015, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1881764983
Name
Joseph Charles Serflek
Credential
DDS
Primary taxonomy
General Practice Dentistry 1223G0001X
License number
5001492-015 WI
Self-reported in NPPES; status is on the state search
Practice location
13900 W National Ave, New Berlin, WI 53151
Phone
(262) 786-2566
Enumerated
Nov 8, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(262) 786-2839
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 13900 W National Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Elizabeth Borst, PMHNPPsychiatric/Mental Health Nurse Practitioner1386922409
  2. Jessica Buchberger, D.O.Family Medicine Physician1821483538
  3. William Crinzi, DDSGeneral Practice Dentistry1245300243
  4. Deanne Fischer, PTPhysical Therapist1750143814
  5. Kelsey KoenigFamily Medicine Physician1558789313
  6. Krisztian Nemeth, MD, PHDDermatology Physician1154741981

Verify Joseph Charles Serflek in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
    Search for license 5001492-015
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Wisconsin license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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84% fewer Medicare Part D claims than the average general practice dentistry in 2024

13 Medicare Part D claims, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D.

  1. Joseph Serflek13
  2. Specialty average83

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.

Joseph Charles Serflek among 2,305 general practice dentistry records in Wisconsin

Joseph Charles Serflek, DDS is one of 2,305 general practice dentistry records with a practice address in Wisconsin. 57% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 3% of them.

  • NPI issued2006 · 3% of these records are older, 67% newer
  • In a Medicare fileYes · 57% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2007 · 75% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

17 general practice dentistry records list a practice address in New Berlin

They are 17 of the 662 NPPES records with a practice address in New Berlin, and 2,305 general practice dentistry records in Wisconsin.

The 8 general practice dentistry records with the nearest ZIP codes

  1. William Crinzi, DDSNew Berlin, WI 531511245300243
  2. Angela Ferri, DDSNew Berlin, WI 531511851554661
  3. Lanae Fox, D.D.S.New Berlin, WI 531511922135276
  4. Jon Gruchalski, DDSNew Berlin, WI 531511083873004
  5. Jeffrey Gruchalski, DDSNew Berlin, WI 531511366603995
  6. Vijayata Gupta, DDSNew Berlin, WI 531511275848350
  7. John Irey, DDSNew Berlin, WI 531511578660213
  8. Sarah Quesnell, D.D.S.New Berlin, WI 531511881806966

Common questions

What is Joseph Charles Serflek, DDS's NPI number?

Joseph Charles Serflek, DDS's National Provider Identifier (NPI) is 1881764983, issued on Nov 8, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Joseph Charles Serflek, DDS located?

The NPPES record lists a practice address at 13900 W National Ave, New Berlin, WI, 53151. Phone: (262) 786-2566. Providers update this record themselves, so call before visiting.

How can I verify Joseph Charles Serflek, DDS's license?

NPPES lists Wisconsin license number 5001492-015, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.

How much does Joseph Charles Serflek, DDS prescribe under Medicare Part D?

In 2024, Joseph Charles Serflek, DDS had 13 Medicare Part D claims; the average among general practice dentistry prescribers was 83. 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.