NPPES file of Aug 9, 2026

Mark Derek Emerson, DC

Chiropractor · Saratoga, CA

Mark Derek Emerson, DC is a chiropractor with a practice address in Saratoga, California, and NPI 1801939046, issued on Feb 15, 2007. Check the license (California 26278, as entered in NPPES) with the California board that licenses this profession; 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
1801939046
Name
Mark Derek Emerson
Credential
DC
Primary taxonomy
Chiropractor 111N00000X
License numbers
26278 CA
851 HI
Self-reported in NPPES; status is on the state search
Practice location
14375 Saratoga Ave, Saratoga, CA 95070
Phone
(408) 872-1031
Enumerated
Feb 15, 2007
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(408) 872-1074
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 14375 Saratoga Ave

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

  1. Michael Shulko, D.C.Chiropractor1407998024

Verify Mark Derek Emerson 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 26278
    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Mark Derek Emerson among 11,498 chiropractor records in California

Mark Derek Emerson, DC is one of 11,498 chiropractor records with a practice address in California. 7% 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 2007, is newer than 35% of them.

  • NPI issued2007 · 35% of these records are older, 45% newer
  • In a Medicare fileNo · 7% of these records are
  • In the CMS Doctors and Clinicians fileNo · 25% of these records are
  • Record last updated2007 · 77% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 111N00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

8 chiropractor records list a practice address in Saratoga

They are 8 of the 306 NPPES records with a practice address in Saratoga, and 11,498 chiropractor records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

The 8 chiropractor records with the nearest ZIP codes

  1. Brian Burkholder, D.C.Saratoga, CA 950701356331367
  2. Kirsten Krause, D.C.Saratoga, CA 950701639169642
  3. John Marian, D CSaratoga, CA 950701285828418
  4. Mahtab Nejad, DCSaratoga, CA 950701144214800
  5. Tan Nguyen, D.CSaratoga, CA 950701477998557
  6. Michael Shulko, D.C.Saratoga, CA 950701407998024
  7. Michael Wang, D.CSaratoga, CA 950701760749113
  8. John Amaral, D.C.Soquel, CA 950731144314071

Common questions

What is Mark Derek Emerson, DC's NPI number?

Mark Derek Emerson, DC's National Provider Identifier (NPI) is 1801939046, issued on Feb 15, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Mark Derek Emerson, DC located?

The NPPES record lists a practice address at 14375 Saratoga Ave, Saratoga, CA, 95070. Phone: (408) 872-1031. Providers update this record themselves, so call before visiting.

How can I verify Mark Derek Emerson, DC's license?

NPPES lists California license number 26278, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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. 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.