NPPES file of Aug 9, 2026

Mark E. Johnson, MD

Emergency Medicine Physician · Marysville, CA

Mark E. Johnson, MD is an emergency medicine physician with a practice address in Marysville, California, and NPI 1669578357, issued on Sep 16, 2006. Check the license on the Medical Board of California; 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
1669578357
Name
Mark E. Johnson
Credential
MD
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
MD00044906 WA
Self-reported in NPPES; status is on the state search
Practice location
724 5TH St, Marysville, CA 95901
Phone
(530) 749-3242
Enumerated
Sep 16, 2006
Record last updated
Jul 2, 2015 (not updated in 11 years: call before relying on the address or phone)
Fax
(530) 749-3248
Medicaid ID
8429763 WA
Medicare enrollment
Enrolled (PECOS I20180730003008); accepts Medicare assignment
Medical or professional school
Rush Medical College Of Rush University, 2000
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 724 5TH St

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

  1. Cathleen Crawford, P.A.Physician Assistant1326174194
  2. Sharon Ekedahl, FNPFamily Nurse Practitioner1982038121
  3. Glenn Palmbaum, PA-CFamily Medicine Physician1619030970

Verify Mark E. Johnson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of CaliforniaCheck 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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56% fewer Medicare Part D claims than the average emergency medicine physician in 2024

100 Medicare Part D claims for 56 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 15 claims were for opioids.

  1. Mark Johnson100
  2. Specialty average226

Most prescribed

  1. Azithromycin15 claims
  2. Tramadol Hcl14 claims
  3. Cephalexin12 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: $19.39

1 payment: food and beverage; the largest payer was Stryker Corporation. The 12,335 providers of this specialty with any payment received $953.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Mark Johnson$19.39
  2. Specialty average$953.79

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

Bills Medicare through one group practice

  1. Emergency Medicine Services OF TX, PLLCSan Antonio, TX

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Mark E. Johnson among 7,751 emergency medicine physician records in California

Mark E. Johnson, MD is one of 7,751 emergency medicine physician records with a practice address in California. 81% 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 4% of them.

  • NPI issued2006 · 4% of these records are older, 60% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated2000 · median 2011 among the 4,560 with a school on file
  • Record last updated2015 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

12 emergency medicine physician records list a practice address in Marysville

They are 12 of the 708 NPPES records with a practice address in Marysville, and 7,751 emergency medicine physician records in California.

The 8 emergency medicine physician records with the nearest ZIP codes

  1. Davindeep Brar, MDMarysville, CA 959011962030023
  2. Matthew Donnelly, M.D.Marysville, CA 959011679773311
  3. Bradley Grausz, D.OMarysville, CA 959011033288204
  4. Karen Parker, M.DMarysville, CA 959011548200546
  5. Kashmir Singh, M.DMarysville, CA 959011013955202
  6. Donald Snyder, M.DMarysville, CA 959011770521965
  7. Evan Wu, M.D.Marysville, CA 959011417311010
  8. Alec Good, D.O.Beale Afb, CA 959031285169078

Common questions

What is Mark E. Johnson, MD's NPI number?

Mark E. Johnson, MD's National Provider Identifier (NPI) is 1669578357, issued on Sep 16, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mark E. Johnson, MD located?

The NPPES record lists a practice address at 724 5TH St, Marysville, CA, 95901. Phone: (530) 749-3242. Providers update this record themselves, so call before visiting.

How can I verify Mark E. Johnson, MD's license?

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.

How much does Mark E. Johnson, MD prescribe under Medicare Part D?

In 2024, Mark E. Johnson, MD had 100 Medicare Part D claims for 56 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.