NPPES file of Aug 9, 2026

Marshall John Michaelian, DMD

Endodontics · Daly City, CA

Marshall John Michaelian, DMD is an endodontics with a practice address in Daly City, California, and NPI 1578623815, issued on Dec 9, 2006. Check the license (California 46646, 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
1578623815
Name
Marshall John Michaelian
Credential
DMD
Primary taxonomy
Endodontics 1223E0200X
License number
46646 CA
Self-reported in NPPES; status is on the state search
Practice location
341 Gellert Blvd Ste C, Daly City, CA 94015
Phone
(650) 994-2710
Enumerated
Dec 9, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(650) 994-5313
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 341 Gellert Blvd Ste C

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

  1. Janice Mach, DMDEndodontics1184298226
  2. Radhika Tandon, D.M.D.Endodontics1386804219

Verify Marshall John Michaelian 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 46646
    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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23% more Medicare Part D claims than the average endodontics in 2024

149 Medicare Part D claims for 56 beneficiaries, against an average of 121 among the 4,119 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Marshall Michaelian149
  2. Specialty average121

Most prescribed

  1. Chlorhexidine Gluconate50 claims
  2. Amoxicillin48 claims
  3. Ibuprofen37 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: $148.31

1 payment: food and beverage; the largest payer was Dentsply Sirona Inc. The 2,057 providers of this specialty with any payment received $49,739.86 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Marshall Michaelian$148
  2. Specialty average$49,740

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

Marshall John Michaelian among 1,018 endodontics records in California

Marshall John Michaelian, DMD is one of 1,018 endodontics records with a practice address in California. 68% 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 2% of them.

  • NPI issued2006 · 2% of these records are older, 73% newer
  • In a Medicare fileYes · 68% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2007 · 78% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223E0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Endodontics providers in California

There are 1,018 endodontics records in California.

The 8 endodontics records with the nearest ZIP codes

  1. Rowshan Ahani, D.D.S., M.S.Daly City, CA 940151821494378
  2. Jennifer Fong, DDSDaly City, CA 940151235385493
  3. Janice Mach, DMDDaly City, CA 940151184298226
  4. Radhika Tandon, D.M.D.Daly City, CA 940151386804219
  5. Jerry Lin, DMDBurlingame, CA 940101174687800
  6. Thomas Mack, D.D.S.Los Altos, CA 940221750422853
  7. Erlyn Hernandez, DMDMenlo Park, CA 940251902926074
  8. Tanya Zaghi, DDSMenlo Park, CA 940251467685834

Common questions

What is Marshall John Michaelian, DMD's NPI number?

Marshall John Michaelian, DMD's National Provider Identifier (NPI) is 1578623815, issued on Dec 9, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Marshall John Michaelian, DMD located?

The NPPES record lists a practice address at 341 Gellert Blvd Ste C, Daly City, CA, 94015. Phone: (650) 994-2710. Providers update this record themselves, so call before visiting.

How can I verify Marshall John Michaelian, DMD's license?

NPPES lists California license number 46646, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Marshall John Michaelian, DMD prescribe under Medicare Part D?

In 2024, Marshall John Michaelian, DMD had 149 Medicare Part D claims for 56 beneficiaries; the average among endodontics prescribers was 121. 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.