NPPES file of Aug 9, 2026

Mark Raymond Seifert, M.D.

Anatomic Pathology & Clinical Pathology Physician · Colton, CA

Mark Raymond Seifert, M.D. is an anatomic pathology & clinical pathology physician with a practice address in Colton, California, and NPI 1831127653, issued on Jun 29, 2006. Check the license (California G037224, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1831127653
Name
Mark Raymond Seifert
Credential
M.D.
Primary taxonomy
Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
License number
G037224 CA
Self-reported in NPPES; status is on the state search
Practice location
400 N Pepper Ave, Colton, CA 92324
Phone
(909) 580-0010
Enumerated
Jun 29, 2006
Record last updated
Mar 12, 2012 (not updated in 14 years: call before relying on the address or phone)
Fax
(909) 580-0064
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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8 nearest anatomic pathology & clinical pathology physician records → All 1,554 in California → Look up another NPI →

Also registered at 400 N Pepper Ave

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

  1. Shangrila AbaricoRegistered Nurse1609659325
  2. Susana AbaroRegistered Nurse1114425162
  3. Patricia AbbaRegistered Nurse1013188838
  4. Mohammad Hossein Abbasi, MD, MPHStudent in an Organized Health Care Education/Training Program1609622166
  5. Ala AbedrabboCertified Registered Nurse Anesthetist1972333144
  6. Mary AboagyeLicensed Vocational Nurse1982875605

Verify Mark Raymond Seifert in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G037224    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
Open the California license search

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Mark Raymond Seifert among 1,554 anatomic pathology & clinical pathology physician records in California

Mark Raymond Seifert, M.D. is one of 1,554 anatomic pathology & clinical pathology physician records with a practice address in California. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 7% of them.

  • NPI issued2006 · 7% of these records are older, 57% newer
  • In a Medicare fileNo · 65% of these records are
  • In the CMS Doctors and Clinicians fileNo · 57% of these records are
  • Record last updated2012 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0102X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Anatomic Pathology & Clinical Pathology Physician providers in California

There are 1,554 anatomic pathology & clinical pathology physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 1,554 in California → Every provider in Colton → Anatomic Pathology & Clinical Pathology Physician nationwide →

The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes

  1. Mukesh AgarwalColton, CA 923241154901056
  2. Theodore Friedman, M.D.Colton, CA 923241003991654
  3. Ahmad Ibrahim, M.D.Colton, CA 923241356754840
  4. Ellen Ko, M.D.Colton, CA 923241124047501
  5. John Magpayo, MDColton, CA 923241093829251
  6. Faramarz Azizi, MDFontana, CA 923351104974914
  7. Albert Chen, MDFontana, CA 923351770655250
  8. Yiqiong Mao, MDFontana, CA 923351013065820

Common questions

What is Mark Raymond Seifert, M.D.'s NPI number?

Mark Raymond Seifert, M.D.'s National Provider Identifier (NPI) is 1831127653, issued on Jun 29, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mark Raymond Seifert, M.D. located?

The NPPES record lists a practice address at 400 N Pepper Ave, Colton, CA, 92324. Phone: (909) 580-0010. Providers update this record themselves, so call before visiting.

How can I verify Mark Raymond Seifert, M.D.'s license?

NPPES lists California license number G037224, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.