NPPES file of Aug 9, 2026

Jeffrey Louis Geissberger, DDS

General Practice Dentistry · Greenbrae, CA

Jeffrey Louis Geissberger, DDS is a general practice dentistry with a practice address in Greenbrae, California, and NPI 1225130180, issued on Sep 2, 2006. Check the license (California 41176, 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
1225130180
Name
Jeffrey Louis Geissberger
Credential
DDS
Primary taxonomy
General Practice Dentistry 1223G0001X
License number
41176 CA
Self-reported in NPPES; status is on the state search
Practice location
1341 S Eliseo Dr, Greenbrae, CA 94904
Phone
(415) 461-1341
Enumerated
Sep 2, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(415) 461-4764
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 1341 S Eliseo Dr

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

  1. David Berman, M.D.Internal Medicine Physician1548245921
  2. Catharine Clark-Sayles, M.D.Internal Medicine Physician1518952860
  3. Marc Geissberger, DDS, MAGeneral Practice Dentistry1093817967

Verify Jeffrey Louis Geissberger 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 41176
    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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60% fewer Medicare Part D claims than the average general practice dentistry in 2024

33 Medicare Part D claims for 22 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D.

  1. Jeffrey Geissberger33
  2. Specialty average83

Most prescribed

  1. Amoxicillin18 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.

13 general practice dentistry records list a practice address in Greenbrae

They are 13 of the 727 NPPES records with a practice address in Greenbrae, and 17,852 general practice dentistry records in California.

Other general practice dentistry records in California

  1. Ronald Aanerud, DDSSan Diego, CA1871752931
  2. Steven Aaronson, D.D.S.Santa Monica, CA1265455851
  3. Shahrzad Aarup, DDSPomona, CA1265784367
  4. Al Abad, DDSSan Jose, CA1104992148
  5. Erwin Abad, D.D.S.Canoga Park, CA1861590093
  6. Francine Abad, DDSSan Francisco, CA1942700810
  7. Maria Abad, D.D.S.Norwalk, CA1215006754
  8. Mark Ryan Abad, DDSDaly City, CA1770357394
  9. Sanaz Abadi, D.D.S.Los Angeles, CA1699934026
  10. Ernesto Abadilla, DDSPalm Desert, CA1508063801

Common questions

What is Jeffrey Louis Geissberger, DDS's NPI number?

Jeffrey Louis Geissberger, DDS's National Provider Identifier (NPI) is 1225130180, issued on Sep 2, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Jeffrey Louis Geissberger, DDS located?

The NPPES record lists a practice address at 1341 S Eliseo Dr, Greenbrae, CA, 94904. Phone: (415) 461-1341. Providers update this record themselves, so call before visiting.

How can I verify Jeffrey Louis Geissberger, DDS's license?

NPPES lists California license number 41176, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Jeffrey Louis Geissberger, DDS prescribe under Medicare Part D?

In 2024, Jeffrey Louis Geissberger, DDS had 33 Medicare Part D claims for 22 beneficiaries; 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.