NPPES file of Aug 9, 2026

William Robert Dapper, DDS MAGD FICOI

General Practice Dentistry · San Clemente, CA

William Robert Dapper, DDS MAGD FICOI is a general practice dentistry with a practice address in San Clemente, California, and NPI 1194853598, issued on Feb 28, 2007. Check the license (California 003566, 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
1194853598
Name
William Robert Dapper
Credential
DDS MAGD FICOI
Primary taxonomy
General Practice Dentistry 1223G0001X
License number
003566 CA
Self-reported in NPPES; status is on the state search
Practice location
128 W EL Portal, San Clemente, CA 92672
Phone
(949) 492-1984
Enumerated
Feb 28, 2007
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(949) 492-1874
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 128 W EL Portal

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

  1. Dawn Schnaidt, R.D.H.Dental Hygienist1669692133

Verify William Robert Dapper 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 003566
    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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11% more Medicare Part D claims than the average general practice dentistry in 2024

92 Medicare Part D claims for 42 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. William Dapper92
  2. Specialty average83

Most prescribed

  1. Amoxicillin28 claims
  2. Chlorhexidine Gluconate13 claims
  3. Sodium Fluoride 5000 Dry Mouth11 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: $16.00

1 payment: food and beverage; the largest payer was Philips North America LLC. The 41,669 providers of this specialty with any payment received $597.01 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. William Dapper$16.00
  2. Specialty average$597.01

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

William Robert Dapper among 17,852 general practice dentistry records in California

William Robert Dapper, DDS MAGD FICOI is one of 17,852 general practice dentistry records with a practice address in California. 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 2007, is newer than 29% of them.

  • NPI issued2007 · 29% of these records are older, 40% 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 · 79% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

36 general practice dentistry records list a practice address in San Clemente

They are 36 of the 969 NPPES records with a practice address in San Clemente, and 17,852 general practice dentistry records in California.

The 8 general practice dentistry records with the nearest ZIP codes

  1. Arash Asil, DMDSan Clemente, CA 926721619027893
  2. Ninousha Basti, D.D.SSan Clemente, CA 926721164551800
  3. Jack Boatman, DDSSan Clemente, CA 926721841391018
  4. William Brownson, D.D.S.San Clemente, CA 926721659481091
  5. Cheryl Colker, D.M.D.San Clemente, CA 926721699877571
  6. Lawrence Eckl, DDSSan Clemente, CA 926721275695041
  7. John Evered, DDSSan Clemente, CA 926721093700916
  8. Douglas Field, D.D.S.San Clemente, CA 926721407849540

Common questions

What is William Robert Dapper, DDS MAGD FICOI's NPI number?

William Robert Dapper, DDS MAGD FICOI's National Provider Identifier (NPI) is 1194853598, issued on Feb 28, 2007. An NPI identifies a provider in billing; it is not a license.

Where is William Robert Dapper, DDS MAGD FICOI located?

The NPPES record lists a practice address at 128 W EL Portal, San Clemente, CA, 92672. Phone: (949) 492-1984. Providers update this record themselves, so call before visiting.

How can I verify William Robert Dapper, DDS MAGD FICOI's license?

NPPES lists California license number 003566, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does William Robert Dapper, DDS MAGD FICOI prescribe under Medicare Part D?

In 2024, William Robert Dapper, DDS MAGD FICOI had 92 Medicare Part D claims for 42 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.