Mara Thorsen, MD
Family Medicine Physician · Grand Forks, ND
Mara Thorsen, MD is a family medicine physician with a practice address in Grand Forks, North Dakota, and NPI 1598324790, issued on Jun 11, 2019. Check the license (North Dakota RL15800, as entered in NPPES) on the North Dakota Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Mara Thorsen
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- RL15800 ND
Self-reported in NPPES; status is on the state search - Practice location
- 725 Hamline St, Grand Forks, ND 58203
- Phone
- (701) 780-6810
- Enumerated
- Jun 11, 2019
- Record last updated
- Jun 11, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210903002539); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 596 in North Dakota → Look up another NPI →
Also registered at 725 Hamline St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Allard, MSCED, ATCAthletic Trainer1861970600
- Sarah Atallah, MDFamily Medicine Physician1780250464
- Luis Balarin, MDStudent in an Organized Health Care Education/Training Program1366230658
- Logan BalstadStudent in an Organized Health Care Education/Training Program1982540209
- Jonathan Blythe, DOStudent in an Organized Health Care Education/Training Program1750227054
- Philip Bradbury, DOStudent in an Organized Health Care Education/Training Program1508702614
Verify Mara Thorsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNorth Dakota Board of Medicine
Search for license RL15800Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6% more Medicare Part D claims than the average family medicine physician in 2024
3,753 Medicare Part D claims for 331 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 36 claims were for opioids.
Most prescribed
- Atorvastatin Calcium209 claims
- Gabapentin183 claims
- Metoprolol Succinate148 claims
- Levothyroxine Sodium145 claims
- Hydrochlorothiazide127 claims
- Lisinopril127 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
- Altru Health SystemGrand Forks, ND
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mara Thorsen among 596 family medicine physician records in North Dakota
Mara Thorsen, MD is one of 596 family medicine physician records with a practice address in North Dakota. 66% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 75% of them.
- NPI issued2019 · 75% of these records are older, 22% newer
- In a Medicare fileYes · 66% of these records are
- In the CMS Doctors and Clinicians fileYes · 51% of these records are
- Graduated2019 · median 2007 among the 305 with a school on file
- Record last updated2019 · 54% 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 North Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
91 family medicine physician records list a practice address in Grand Forks
They are 91 of the 2,524 NPPES records with a practice address in Grand Forks, and 596 family medicine physician records in North Dakota.
All 596 in North Dakota → Every provider in Grand Forks → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Magnolia De Guzman, MDGrand Forks, ND 582031376769539
- Andrew Gasparini, MDGrand Forks, ND 582031700011459
- Gregory Greek, MDGrand Forks, ND 582031376634386
- Shikha Gupta, MDGrand Forks, ND 582031427498039
- Larry Halvorson, MDGrand Forks, ND 582031457442469
- Fallon Hoverson, MDGrand Forks, ND 582031871889642
- Tamim Khromachou, MDGrand Forks, ND 582031023300688
- William Mann, MDGrand Forks, ND 582031215024310
Common questions
What is Mara Thorsen, MD's NPI number?
Mara Thorsen, MD's National Provider Identifier (NPI) is 1598324790, issued on Jun 11, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Mara Thorsen, MD located?
The NPPES record lists a practice address at 725 Hamline St, Grand Forks, ND, 58203. Phone: (701) 780-6810. Providers update this record themselves, so call before visiting.
How can I verify Mara Thorsen, MD's license?
NPPES lists North Dakota license number RL15800, as entered by the provider. Search the North Dakota Board of Medicine at https://www.ndbom.org/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mara Thorsen, MD prescribe under Medicare Part D?
In 2024, Mara Thorsen, MD had 3,753 Medicare Part D claims for 331 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.