Marissa C. Jama, DO
Internal Medicine Physician · St Charles, IL
Marissa C. Jama, DO is an internal medicine physician with a practice address in St Charles, Illinois, and NPI 1962146258, issued on Apr 23, 2022. Check the license (Illinois 036176435, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Marissa C. Jama
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036176435 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2900 Foxfield RD Ste 307, St Charles, IL 60174
- Phone
- (630) 208-3200
- Enumerated
- Apr 23, 2022
- Record last updated
- Aug 18, 2025
- Fax
- (630) 208-3201
- Medicare enrollment
- Enrolled (PECOS I20250820002390); accepts Medicare assignment
- Medical or professional school
- Midwestern University, Chicago College Of Osteopathic Med, 2022
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 2900 Foxfield RD Ste 307
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Lalithasree Chintam, MDFamily Medicine Physician1740786680
- Ariana Heiger, DOFamily Medicine Physician1821662073
- Shannon Hill, LCSWClinical Social Worker1952846768
- Lucia Parducci, APRN,CNPNurse Practitioner1639935810
- Lawrence Yoo, MDInternal Medicine Physician1912167669
Verify Marissa C. Jama 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 036176435Check 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% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,021 Medicare Part D claims for 85 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Atorvastatin Calcium76 claims
- Gabapentin48 claims
- Metformin Hcl Er43 claims
- Amlodipine Besylate37 claims
- Duloxetine Hcl35 claims
- Lisinopril33 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
- Central Dupage Physician GroupSt Charles, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marissa C. Jama among 7,238 internal medicine physician records in Illinois
Marissa C. Jama, DO is one of 7,238 internal medicine physician records with a practice address in Illinois. 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 2022, is newer than 78% of them.
- NPI issued2022 · 78% of these records are older, 18% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2022 · median 2003 among the 3,580 with a school on file
- Record last updated2025 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Internal Medicine Physician providers in Illinois
There are 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in St Charles → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Zbigniew Ciechanowski, M.D.St Charles, IL 601741467452573
- Scott McNaughton, M.D.St Charles, IL 601741073510335
- Laura Tagle, MDSt Charles, IL 601741053440008
- Catherine Thomas, M.D.St Charles, IL 601741295785756
- Vivian Vanroekel, M.D.St Charles, IL 601741487657524
- Lawrence Yoo, MDSt Charles, IL 601741912167669
- Lori Zimmers, M.D.St Charles, IL 601741588734818
- Massarat Bala, M.D.Schaumburg, IL 601731730196833
Common questions
What is Marissa C. Jama, DO's NPI number?
Marissa C. Jama, DO's National Provider Identifier (NPI) is 1962146258, issued on Apr 23, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Marissa C. Jama, DO located?
The NPPES record lists a practice address at 2900 Foxfield RD Ste 307, St Charles, IL, 60174. Phone: (630) 208-3200. Providers update this record themselves, so call before visiting.
How can I verify Marissa C. Jama, DO's license?
NPPES lists Illinois license number 036176435, 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 Marissa C. Jama, DO prescribe under Medicare Part D?
In 2024, Marissa C. Jama, DO had 1,021 Medicare Part D claims for 85 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.