Eric Christoff, M.D.
Internal Medicine Physician · Chicago, IL
Eric Christoff, M.D. is an internal medicine physician with a practice address in Chicago, Illinois, and NPI 1245287317, issued on May 27, 2006. Check the license (Illinois 036-094098, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Eric Christoff
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036-094098 IL
Self-reported in NPPES; status is on the state search - Practice location
- 6500 N Clark St, Chicago, IL 60626
- Phone
- (773) 388-1600
- Enumerated
- May 27, 2006
- Record last updated
- Dec 19, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 036-094098 IL
- Medicare enrollment
- Enrolled (PECOS I20100903000196); accepts Medicare assignment
- Medical or professional school
- Toledo Medical College, 1994
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 6500 N Clark St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Erika Bielenstein, LCPCProfessional Counselor1114585767
- Corinne Blum, M.D.Family Medicine Physician1699791400
- Chris Costas, M.D.Infectious Disease Physician1992732630
- Javon Garcia, LSWSocial Worker1942963632
- Patrick Gibbons, D.O.Family Medicine Physician1619282233
- Magda Houlberg, M.D.Internal Medicine Physician1497925861
Verify Eric Christoff 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 036-094098Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
16% more Medicare Part D claims than the average internal medicine physician in 2024
3,669 Medicare Part D claims for 135 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims. 156 claims were for opioids.
Most prescribed
- Descovy178 claims
- Atorvastatin Calcium140 claims
- Biktarvy127 claims
- Bupropion Xl91 claims
- Gabapentin85 claims
- Rosuvastatin Calcium82 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: $3,301.30
155 payments; by number, the most common kind was food and beverage; the largest payer was ViiV Healthcare Company. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Howard Brown Health CenterChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Eric Christoff among 7,238 internal medicine physician records in Illinois
Eric Christoff, 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
- Graduated1994 · median 2003 among the 3,580 with a school on file
- Record last updated2021 · 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).
2,867 internal medicine physician records list a practice address in Chicago
They are 2,867 of the 63,379 NPPES records with a practice address in Chicago, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Chicago → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Magda Houlberg, M.D.Chicago, IL 606261497925861
- Kwang Jang, D.O.Chicago, IL 606261326271909
- Svetlana Miroshnichenko, MDChicago, IL 606261346231651
- Tolulope Olu-Lawal, MDChicago, IL 606261780207340
- Gregory Rauch, M.D.Chicago, IL 606261912921297
- Brian WeilandChicago, IL 606261225597529
- Sara Ahmed, DOChicago, IL 606251992635122
- Abigail Anderson, DOChicago, IL 606251154263168
Common questions
What is Eric Christoff, M.D.'s NPI number?
Eric Christoff, M.D.'s National Provider Identifier (NPI) is 1245287317, issued on May 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Eric Christoff, M.D. located?
The NPPES record lists a practice address at 6500 N Clark St, Chicago, IL, 60626. Phone: (773) 388-1600. Providers update this record themselves, so call before visiting.
How can I verify Eric Christoff, M.D.'s license?
NPPES lists Illinois license number 036-094098, 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 Eric Christoff, M.D. prescribe under Medicare Part D?
In 2024, Eric Christoff, M.D. had 3,669 Medicare Part D claims for 135 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.