Marc Douglas Johnson, MD
Occupational Medicine Physician · Salinas, CA
Marc Douglas Johnson, MD is an occupational medicine physician with a practice address in Salinas, California, and NPI 1033251681, issued on Feb 12, 2007. Check the license (California A79547, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Marc Douglas Johnson
- Credential
- MD
- Primary taxonomy
- Occupational Medicine Physician 2083X0100X
- License number
- A79547 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2 Rossi Cir, Salinas, CA 93907
- Phone
- (831) 770-0444
- Enumerated
- Feb 12, 2007
- Record last updated
- May 16, 2025
- Medicare enrollment
- Enrolled (PECOS I20200506001142); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest occupational medicine physician records → All 415 in California → Look up another NPI →
Also registered at 2 Rossi Cir
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ernesto Alvero, PAPhysician Assistant1013006477
- Melvin Carter, M.D.Internal Medicine Physician1134125636
- Briana Elliott, PA-CPhysician Assistant1447964176
- Alan Rosenthal, DOInternal Medicine Physician1174606818
- Larry Widman, M.D.Occupational Medicine Physician1366765448
Verify Marc Douglas Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A79547Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average occupational medicine physician in 2024
42 Medicare Part D claims for 16 beneficiaries, against an average of 794 among the 463 providers of this specialty who prescribed in Part D.
Most prescribed
- Levothyroxine Sodium12 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.
Bills Medicare through one group practice
- Pinnacle Medical Group, Inc.Salinas, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marc Douglas Johnson among 415 occupational medicine physician records in California
Marc Douglas Johnson, MD is one of 415 occupational medicine physician records with a practice address in California. 30% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 43% of them.
- NPI issued2007 · 43% of these records are older, 31% newer
- In a Medicare fileYes · 30% of these records are
- In the CMS Doctors and Clinicians fileYes · 12% of these records are
- Graduated1997 · median 1995 among the 51 with a school on file
- Record last updated2025 · 75% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2083X0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Occupational Medicine Physician providers in California
There are 415 occupational medicine physician records in California.
All 415 in California → Every provider in Salinas → Occupational Medicine Physician nationwide →
The 8 occupational medicine physician records with the nearest ZIP codes
- Larry Widman, M.D.Salinas, CA 939071366765448
- Anthony Galicia, M.D.Salinas, CA 939061912942095
- Constantine Kulkoff, D.O.Salinas, CA 939011316574452
- Gary Fujimoto, M.D.Los Altos, CA 940241528122025
- Jordan Firestone, MD, PHD, MPHMountain View, CA 940401124108196
- Pravin Kumar Patel, MDMt View, CA 940401851592273
- Anthony Dubose, M.DRedwood City, CA 940621891840955
- James Boyle, MDRedwood City, CA 940631306924956
Common questions
What is Marc Douglas Johnson, MD's NPI number?
Marc Douglas Johnson, MD's National Provider Identifier (NPI) is 1033251681, issued on Feb 12, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Marc Douglas Johnson, MD located?
The NPPES record lists a practice address at 2 Rossi Cir, Salinas, CA, 93907. Phone: (831) 770-0444. Providers update this record themselves, so call before visiting.
How can I verify Marc Douglas Johnson, MD's license?
NPPES lists California license number A79547, 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.
How much does Marc Douglas Johnson, MD prescribe under Medicare Part D?
In 2024, Marc Douglas Johnson, MD had 42 Medicare Part D claims for 16 beneficiaries; the average among occupational medicine physician prescribers was 794. 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.