Jon Mark Grudem, MD
Neurology Physician · North Sioux City, SD
Jon Mark Grudem, MD is a neurology physician with a practice address in North Sioux City, South Dakota, and NPI 1477649531, issued on Oct 5, 2006. Check the license (South Dakota 7354, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.
- Name
- Jon Mark Grudem
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License numbers
- 7354 SD
38576 IA
Self-reported in NPPES; status is on the state search - Practice location
- 575 N Sioux Point RD, North Sioux City, SD 57049
- Phone
- (605) 217-2667
- Enumerated
- Oct 5, 2006
- Record last updated
- Jan 13, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (605) 217-2900
- Medicare enrollment
- Enrolled (PECOS I20090806000754); may accept Medicare assignment
- Medical or professional school
- Oregon Health Sciences University School Of Medicine, 2004
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 51 in South Dakota → Look up another NPI →
Verify Jon Mark Grudem in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Dakota Board of Medical and Osteopathic Examiners
Search for license 7354Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% fewer Medicare Part D claims than the average neurology physician in 2024
286 Medicare Part D claims for 79 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 37% of claims.
Most prescribed
- Carbidopa-Levodopa40 claims
- Nurtec Odt33 claims
- Ubrelvy28 claims
- Gabapentin22 claims
- Botox21 claims
- Levetiracetam17 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: $40,522.86
63 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 10,858 providers of this specialty with any payment received $8,318.07 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 2 group practices
- Cnos PCSioux City, IA
- Sports Rehab And Professional Therapy Associates IncStorm Lake, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jon Mark Grudem among 51 neurology physician records in South Dakota
Jon Mark Grudem, MD is one of 51 neurology physician records with a practice address in South Dakota. 90% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 67% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 80% of these records are
- Graduated2004 · median 2009 among the 41 with a school on file
- Record last updated2011 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1 neurology physician record lists a practice address in North Sioux City
They are 1 of the 27 NPPES records with a practice address in North Sioux City, and 51 neurology physician records in South Dakota.
All 51 in South Dakota → Every provider in North Sioux City → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- James Case, MDDakota Dunes, SD 570491992708853
- Mei He, M.D.Dakota Dunes, SD 570491790982395
- William Andrews, MDYankton, SD 570781649487588
- Nessim Amin, MDSioux Falls, SD 571041316369523
- Efrat Feldman, M.DSioux Falls, SD 571041821303959
- Xuesheng Feng, MDSioux Falls, SD 571041881880987
- Jerome Freeman, MDSioux Falls, SD 571041609899665
- Fanny Jaquez, MDSioux Falls, SD 571041740212208
Common questions
What is Jon Mark Grudem, MD's NPI number?
Jon Mark Grudem, MD's National Provider Identifier (NPI) is 1477649531, issued on Oct 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jon Mark Grudem, MD located?
The NPPES record lists a practice address at 575 N Sioux Point RD, North Sioux City, SD, 57049. Phone: (605) 217-2667. Providers update this record themselves, so call before visiting.
How can I verify Jon Mark Grudem, MD's license?
NPPES lists South Dakota license number 7354, as entered by the provider. Search the South Dakota Board of Medical and Osteopathic Examiners at https://www.sdbmoe.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jon Mark Grudem, MD prescribe under Medicare Part D?
In 2024, Jon Mark Grudem, MD had 286 Medicare Part D claims for 79 beneficiaries; the average among neurology physician prescribers was 1,370. 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.