NPPES file of Aug 9, 2026

Mark A. Carlson, MD

Family Medicine Physician · Mount Vernon, WA

Mark A. Carlson, MD is a family medicine physician with a practice address in Mount Vernon, Washington, and NPI 1851449318, issued on Jan 8, 2007. Check the license (Washington MD00024510, as entered in NPPES) on the Washington Medical Commission; 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
1851449318
Name
Mark A. Carlson
Credential
MD
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
MD00024510 WA
Self-reported in NPPES; status is on the state search
Practice location
1400 E. Kincade Street, Mount Vernon, WA 98274
Phone
(360) 428-6434
Enumerated
Jan 8, 2007
Record last updated
Jun 4, 2015 (not updated in 11 years: call before relying on the address or phone)
Fax
(360) 848-4233
Medicaid ID
1030741 WA
Medicare enrollment
Enrolled (PECOS I20130320000652); accepts Medicare assignment
Medical or professional school
University Of Colorado School Of Medicine, Denver, 1984
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.
Download card Updates feed

Also registered at 1400 E. Kincade Street

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

  1. Allison Porter, MDSurgery Physician1063654457

Verify Mark A. Carlson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWashington Medical Commission
    Search for license MD00024510
    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 Washington 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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

84% fewer Medicare Part D claims than the average family medicine physician in 2024

561 Medicare Part D claims for 366 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 26 claims were for opioids.

  1. Mark Carlson561
  2. Specialty average3,544

Most prescribed

  1. Doxycycline Hyclate86 claims
  2. Prednisone64 claims
  3. Albuterol Sulfate Hfa46 claims
  4. Sulfamethoxazole-Trimethoprim38 claims
  5. Cephalexin37 claims
  6. Tizanidine Hcl35 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

  1. Public Hospital Dist NO 1 SkagitMount Vernon, WA

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

Mark A. Carlson among 5,534 family medicine physician records in Washington

Mark A. Carlson, MD is one of 5,534 family medicine physician records with a practice address in Washington. 73% 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 42% of them.

  • NPI issued2007 · 42% of these records are older, 47% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated1984 · median 2009 among the 3,294 with a school on file
  • Record last updated2015 · 57% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

78 family medicine physician records list a practice address in Mount Vernon

They are 78 of the 1,500 NPPES records with a practice address in Mount Vernon, and 5,534 family medicine physician records in Washington.

The 8 family medicine physician records with the nearest ZIP codes

  1. Melissa Ashby, MDMount Vernon, WA 982741245226646
  2. David Benson, M.D.Mount Vernon, WA 982741629057278
  3. John Erbstoeszer, MDMount Vernon, WA 982741720074875
  4. Roger Estep, M.D.Mount Vernon, WA 982741033112479
  5. Jonathan Gamson, MDMount Vernon, WA 982741639172927
  6. Barbara Hahn, MDMount Vernon, WA 982741073500021
  7. Janet Hansom, MDMount Vernon, WA 982741568465870
  8. Robert Jacobsen, MDMount Vernon, WA 982741205890944

Common questions

What is Mark A. Carlson, MD's NPI number?

Mark A. Carlson, MD's National Provider Identifier (NPI) is 1851449318, issued on Jan 8, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Mark A. Carlson, MD located?

The NPPES record lists a practice address at 1400 E. Kincade Street, Mount Vernon, WA, 98274. Phone: (360) 428-6434. Providers update this record themselves, so call before visiting.

How can I verify Mark A. Carlson, MD's license?

NPPES lists Washington license number MD00024510, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Mark A. Carlson, MD prescribe under Medicare Part D?

In 2024, Mark A. Carlson, MD had 561 Medicare Part D claims for 366 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.