Nassim R. Karimi, M.D.
Gastroenterology Physician · Mount Vernon, WA
Nassim R. Karimi, M.D. is a gastroenterology physician with a practice address in Mount Vernon, Washington, and NPI 1982763314, issued on Dec 8, 2006. Check the license (Washington MD00028850, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Nassim R. Karimi
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- MD00028850 WA
MD28850 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1400 E Kincaid St, Mount Vernon, WA 98274
- Phone
- (360) 814-6113
- Enumerated
- Dec 8, 2006
- Record last updated
- Mar 7, 2023
- Fax
- (360) 814-6111
- Medicare enrollment
- Enrolled (PECOS I20120109000943); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 533 in Washington → Look up another NPI →
Also registered at 1400 E Kincaid St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Daniela Abreu, DOObstetrics & Gynecology Physician1770169260
- Sankar Alagugurusamy, MDGastroenterology Physician1093970576
- Aleisha Allen, PA-CSurgical Physician Assistant1700520087
- Marshall Anderson, MDOccupational Medicine Physician1417942038
- George Ang, MDEndocrinology, Diabetes & Metabolism Physician1396737326
- Melissa Ashby, MDFamily Medicine Physician1245226646
Verify Nassim R. Karimi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00028850Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% more Medicare Part D claims than the average gastroenterology physician in 2024
1,362 Medicare Part D claims for 540 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.
Most prescribed
- Pantoprazole Sodium234 claims
- Sod Sulf-Potass Sulf-Mag Sulf181 claims
- Omeprazole147 claims
- Famotidine127 claims
- Peg-3350 And Electrolytes91 claims
- Gavilyte-G75 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: $32.15
1 payment: food and beverage; the largest payer was Takeda Pharmaceuticals U.S.A., Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- 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).
Nassim R. Karimi among 533 gastroenterology physician records in Washington
Nassim R. Karimi, M.D. is one of 533 gastroenterology physician records with a practice address in Washington. 76% 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 13% of them.
- NPI issued2006 · 13% of these records are older, 48% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1983 · median 2003 among the 373 with a school on file
- Record last updated2023 · 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 207RG0100X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Washington
There are 533 gastroenterology physician records in Washington.
All 533 in Washington → Every provider in Mount Vernon → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Sankar Alagugurusamy, MDMount Vernon, WA 982741093970576
- Samit Datta, M.D.Mount Vernon, WA 982741902217888
- Robert Dy, D.O.Mount Vernon, WA 982741851397210
- John Halsey, MDMount Vernon, WA 982741417944463
- Ayah Oglat, MDMount Vernon, WA 982741548644149
- Kalyan Wadwa, MDMount Vernon, WA 982741730260761
- Colin Chinn, M.D.Oak Harbor, WA 982781871564302
- Christoph Reitz, M.D.Bellingham, WA 982291639135007
Common questions
What is Nassim R. Karimi, M.D.'s NPI number?
Nassim R. Karimi, M.D.'s National Provider Identifier (NPI) is 1982763314, issued on Dec 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Nassim R. Karimi, M.D. located?
The NPPES record lists a practice address at 1400 E Kincaid St, Mount Vernon, WA, 98274. Phone: (360) 814-6113. Providers update this record themselves, so call before visiting.
How can I verify Nassim R. Karimi, M.D.'s license?
NPPES lists Washington license number MD00028850, 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 Nassim R. Karimi, M.D. prescribe under Medicare Part D?
In 2024, Nassim R. Karimi, M.D. had 1,362 Medicare Part D claims for 540 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.