Katherine Spangenberg, M.D.
Internal Medicine Physician · Joliet, IL
Katherine Spangenberg, M.D. is an internal medicine physician with a practice address in Joliet, Illinois, and NPI 1942246954, issued on Jun 20, 2006. Check the license (Illinois 036102796, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Katherine Spangenberg
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036102796 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2100 Glenwood Ave, Joliet, IL 60435
- Phone
- (815) 725-2121
- Enumerated
- Jun 20, 2006
- Record last updated
- Jun 1, 2022
- Fax
- (815) 741-6303
- Medicaid ID
- 36102796 IL
- Medicare enrollment
- Enrolled (PECOS I20090212000679); accepts Medicare assignment
- Medical or professional school
- Wayne State University School Of Medicine, 1995
- 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 2100 Glenwood Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sherri Albert, APNNurse Practitioner1013382209
- Irfan Alhayani, MDHospitalist Physician1316036692
- Grace Anderson, PT, DPTPhysical Therapist1447064134
- Jose Becerra, PTPhysical Therapist1629248703
- Alyssa Brown, MSOTR/LOccupational Therapist1487189551
Verify Katherine Spangenberg 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 036102796Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
48% more Medicare Part D claims than the average internal medicine physician in 2024
4,699 Medicare Part D claims for 421 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 78 claims were for opioids.
Most prescribed
- Amlodipine Besylate339 claims
- Atorvastatin Calcium302 claims
- Levothyroxine Sodium193 claims
- Losartan Potassium170 claims
- Lisinopril150 claims
- Hydrochlorothiazide143 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.
One hospital affiliation
- Loyola University Medical CenterMaywood, IL · Acute Care Hospitals2 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Katherine Spangenberg among 7,238 internal medicine physician records in Illinois
Katherine Spangenberg, M.D. 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 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 61% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1995 · median 2003 among the 3,580 with a school on file
- Record last updated2022 · 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).
40 internal medicine physician records list a practice address in Joliet
They are 40 of the 2,047 NPPES records with a practice address in Joliet, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Joliet → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Eleanor Bautista, M.D.Joliet, IL 604351780669804
- Steven Cataldo, M.D.Joliet, IL 604351366488835
- Maria Cole, DOJoliet, IL 604351215922679
- Zlatko Haveric, M.D.Jolie, IL 604351568492726
- Joseph Hindo, M.D.Joliet, IL 604351245226885
- Nour Kabbani, M.D.Joliet, IL 604351235125907
- Liji Mathew, MDJoliet, IL 604351396788683
- Mony Sarcu, M.D.Joliet, IL 604351760427876
Common questions
What is Katherine Spangenberg, M.D.'s NPI number?
Katherine Spangenberg, M.D.'s National Provider Identifier (NPI) is 1942246954, issued on Jun 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Spangenberg, M.D. located?
The NPPES record lists a practice address at 2100 Glenwood Ave, Joliet, IL, 60435. Phone: (815) 725-2121. Providers update this record themselves, so call before visiting.
How can I verify Katherine Spangenberg, M.D.'s license?
NPPES lists Illinois license number 036102796, 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 Katherine Spangenberg, M.D. prescribe under Medicare Part D?
In 2024, Katherine Spangenberg, M.D. had 4,699 Medicare Part D claims for 421 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.