NPPES file of Aug 9, 2026

Mark E. Harris, DDS

Public Health Dentistry · Riverside, CA

Mark E. Harris, DDS is a public health dentistry with a practice address in Riverside, California, and NPI 1508856840, issued on Oct 27, 2005. Check the license (California 51258, 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
1508856840
Name
Mark E. Harris
Credential
DDS
Primary taxonomy
Public Health Dentistry 1223D0001X
License number
51258 CA
Self-reported in NPPES; status is on the state search
Practice location
5925 Brockton Ave, Riverside, CA 92506
Phone
(951) 684-4988
Enumerated
Oct 27, 2005
Record last updated
Aug 23, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(951) 684-4899
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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Verify Mark E. Harris 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 51258
    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
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69% fewer Medicare Part D claims than the average public health dentistry in 2024

22 Medicare Part D claims for 15 beneficiaries, against an average of 72 among the 375 providers of this specialty who prescribed in Part D.

  1. Mark Harris22
  2. Specialty average72

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: $48.72

2 payments; by number, the most common kind was food and beverage; the largest payer was Straumann USA LLC. The 195 providers of this specialty with any payment received $197.18 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Mark Harris$48.72
  2. Specialty average$197.18

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

Mark E. Harris among 102 public health dentistry records in California

Mark E. Harris, DDS is one of 102 public health dentistry records with a practice address in California. 33% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 98% newer
  • In a Medicare fileYes · 33% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2007 · 64% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223D0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Public Health Dentistry providers in California

There are 102 public health dentistry records in California.

The 8 public health dentistry records with the nearest ZIP codes

  1. Sarah Huh, DDSRiverside, CA 925071851118202
  2. Sandra Shenouda, DMDSan Bernardino, CA 924101902477979
  3. Hungchi Liao, DDS, MSDSan Bernardino, CA 924081336806173
  4. Don Gregg, DDSLoma Linda, CA 923501346568789
  5. Janelle Comfort, D.M.D.Santa Ana, CA 927051235685124
  6. Seng-Tiew Tan, DDSSanta Ana, CA 927061063658367
  7. Richard Schrage, DDSWinterhaven, CA 922831225197908
  8. Matthew Casey, D.D.S.El Centro, CA 922431790724938

Common questions

What is Mark E. Harris, DDS's NPI number?

Mark E. Harris, DDS's National Provider Identifier (NPI) is 1508856840, issued on Oct 27, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Mark E. Harris, DDS located?

The NPPES record lists a practice address at 5925 Brockton Ave, Riverside, CA, 92506. Phone: (951) 684-4988. Providers update this record themselves, so call before visiting.

How can I verify Mark E. Harris, DDS's license?

NPPES lists California license number 51258, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Mark E. Harris, DDS prescribe under Medicare Part D?

In 2024, Mark E. Harris, DDS had 22 Medicare Part D claims for 15 beneficiaries; the average among public health dentistry prescribers was 72. 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.