Grant D. Sievertsen, MD
Endocrinology, Diabetes & Metabolism Physician · Hinsdale, IL
Grant D. Sievertsen, MD is an endocrinology, diabetes & metabolism physician with a practice address in Hinsdale, Illinois, and NPI 1134197619, issued on Mar 9, 2006. Check the license (Illinois 036051989, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Grant D. Sievertsen
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- 036051989 IL
Self-reported in NPPES; status is on the state search - Practice location
- 40 S Clay St Ste 210E, Hinsdale, IL 60521
- Phone
- (630) 323-3540
- Enumerated
- Mar 9, 2006
- Record last updated
- Aug 22, 2023
- Medicaid ID
- 036051989 IL
- Medicare enrollment
- Enrolled (PECOS I20040127000110); accepts Medicare assignment
- Medical or professional school
- Perelman School Of Med At The University Of Pennsylvania, 1974
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 436 in Illinois → Look up another NPI →
Also registered at 40 S Clay St Ste 210E
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Grant D. Sievertsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036051989Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.0 times the Medicare Part D claims of the average endocrinology, diabetes & metabolism physician in 2024
13,056 Medicare Part D claims for 1,022 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims. 199 claims were for opioids.
Most prescribed
- Levothyroxine Sodium1,242 claims
- Atorvastatin Calcium767 claims
- Amlodipine Besylate649 claims
- Metformin Hcl572 claims
- Glimepiride547 claims
- Rosuvastatin Calcium400 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: $134.66
6 payments; by number, the most common kind was food and beverage; the largest payer was Exact Sciences Corporation. The 5,661 providers of this specialty with any payment received $5,742.15 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
- Dupage Medical Group LtdSchaumburg, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Grant D. Sievertsen among 436 endocrinology, diabetes & metabolism physician records in Illinois
Grant D. Sievertsen, MD is one of 436 endocrinology, diabetes & metabolism physician records with a practice address in Illinois. 85% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 62% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1974 · median 2006 among the 295 with a school on file
- Record last updated2023 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Illinois
There are 436 endocrinology, diabetes & metabolism physician records in Illinois.
All 436 in Illinois → Every provider in Hinsdale → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Stephanie Heavey, MDHinsdale, IL 605211134174071
- Hong Lee, M.D.Hinsdale, IL 605211023289444
- Arati Reddy, M.D.Hinsdale, IL 605211306803028
- Carla Romero, M.D.Hinsdale, IL 605211548392368
- Daesman Suri, MDHinsdale, IL 605211134186968
- Arshi Basit, M.D.Oak Brook, IL 605231720343908
- Dennis Lebbin, M.D.Oak Brook, IL 605231699083824
- Sobia Sadiq, M.DOak Brook, IL 605231629330303
Common questions
What is Grant D. Sievertsen, MD's NPI number?
Grant D. Sievertsen, MD's National Provider Identifier (NPI) is 1134197619, issued on Mar 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Grant D. Sievertsen, MD located?
The NPPES record lists a practice address at 40 S Clay St Ste 210E, Hinsdale, IL, 60521. Phone: (630) 323-3540. Providers update this record themselves, so call before visiting.
How can I verify Grant D. Sievertsen, MD's license?
NPPES lists Illinois license number 036051989, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Grant D. Sievertsen, MD prescribe under Medicare Part D?
In 2024, Grant D. Sievertsen, MD had 13,056 Medicare Part D claims for 1,022 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.