NPPES file of Aug 9, 2026

Jeffrey D. Hempel, D.D.S.

Dentist · Acton, CA

Jeffrey D. Hempel, D.D.S. is a dentist with a practice address in Acton, California, and NPI 1427275114, issued on Apr 20, 2007. Check the license (California 29290, as entered in NPPES) with the California 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
1427275114
Name
Jeffrey D. Hempel
Credential
D.D.S.
Primary taxonomy
Dentist 122300000X
License number
29290 CA
Self-reported in NPPES; status is on the state search
Practice location
33342 Santiago RD, Acton, CA 93510
Phone
(661) 269-0610
Enumerated
Apr 20, 2007
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(661) 269-4803
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 33342 Santiago RD

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

  1. Elena Bigun, DDSDentist1619525169

Verify Jeffrey D. Hempel in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 29290
    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 California license search

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74% fewer Medicare Part D claims than the average dentist in 2024

22 Medicare Part D claims for 20 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Jeffrey Hempel22
  2. Specialty average86

Most prescribed

  1. Cephalexin12 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.

Jeffrey D. Hempel among 14,729 dentist records in California

Jeffrey D. Hempel, D.D.S. is one of 14,729 dentist records with a practice address in California. 56% 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 18% of them.

  • NPI issued2007 · 18% of these records are older, 58% newer
  • In a Medicare fileYes · 56% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2007 · 73% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

2 dentist records list a practice address in Acton

They are 2 of the 62 NPPES records with a practice address in Acton, and 14,729 dentist records in California.

The 8 dentist records with the nearest ZIP codes

  1. Elena Bigun, DDSActon, CA 935101619525169
  2. Brian Carkeet, DDSBishop, CA 935141962504282
  3. William Carter, D.D.S.Bishop, CA 935141881670743
  4. Rodolfo Leyva, DDSBishop, CA 935141821861899
  5. Gabriel Overholtzer, D.D.S.Bishop, CA 935141104250588
  6. Parisa Payman, DDSBishop, CA 935141598953382
  7. Bradford Spika, D.M.D.Bishop, CA 935141316491731
  8. Charles Cripps, D.D.S.California City, CA 935051639372683

Common questions

What is Jeffrey D. Hempel, D.D.S.'s NPI number?

Jeffrey D. Hempel, D.D.S.'s National Provider Identifier (NPI) is 1427275114, issued on Apr 20, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Jeffrey D. Hempel, D.D.S. located?

The NPPES record lists a practice address at 33342 Santiago RD, Acton, CA, 93510. Phone: (661) 269-0610. Providers update this record themselves, so call before visiting.

How can I verify Jeffrey D. Hempel, D.D.S.'s license?

NPPES lists California license number 29290, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Jeffrey D. Hempel, D.D.S. prescribe under Medicare Part D?

In 2024, Jeffrey D. Hempel, D.D.S. had 22 Medicare Part D claims for 20 beneficiaries; the average among dentist prescribers was 86. 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.