NPPES file of Aug 9, 2026

Brian Boholst, M.D.

Internal Medicine Physician · Chicago, IL

Brian Boholst, M.D. is an internal medicine physician with a practice address in Chicago, Illinois, and NPI 1235181959, issued on May 17, 2006. Check the license on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1235181959
Name
Brian Boholst
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
Practice location
3245 N Halsted St, Chicago, IL 60657
Phone
(312) 926-3627
Enumerated
May 17, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20100903000096); accepts Medicare assignment
Medical or professional school
University Of South Florida College Of Medicine, 1996
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 3245 N Halsted St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Abbey Baus, PAPhysician Assistant1477911782
  2. Liz FrancoFamily Nurse Practitioner1992354195
  3. Robert Hargan, M.D.Internal Medicine Physician1962591404
  4. Hannah Jeffrey, PA-CPhysician Assistant1417672643
  5. Bianca Jenkins, MDFamily Medicine Physician1568099380
  6. Zachary Long, MDFamily Medicine Physician1669977104

Verify Brian Boholst in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional RegulationCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Illinois license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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30% fewer Medicare Part D claims than the average internal medicine physician in 2024

2,212 Medicare Part D claims for 188 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 111 claims were for opioids.

  1. Brian Boholst2,212
  2. Specialty average3,176

Most prescribed

  1. Amlodipine Besylate125 claims
  2. Atorvastatin Calcium123 claims
  3. Rosuvastatin Calcium114 claims
  4. Losartan Potassium111 claims
  5. Tramadol Hcl74 claims
  6. Lisinopril69 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.

The MIPS final score for 2023 (Medicare payment program): 94.1 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score82.6
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. Northwestern Medical Faculty FoundationLake Forest, IL

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Brian Boholst among 7,238 internal medicine physician records in Illinois

Brian Boholst, 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
  • Graduated1996 · median 2003 among the 3,580 with a school on file
  • Record last updated2007 · 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.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Bruce Blacker, M.D.Chicago, IL 606571982603924
  2. Edgar Borda, MDChicago, IL 606571891782447
  3. Harold EulienChicago, IL 606571700877222
  4. Lisa Greising, M.D.Chicago, IL 606571578523155
  5. Michael Grendon, M.D.Chicago, IL 606571922007962
  6. Catherine Kallal, MDChicago, IL 606571407801665
  7. Alam Khan, M.D.Chicago, IL 606571316946288
  8. Thomas Klarquist, M.D.Chicago, IL 606571477517373

Common questions

What is Brian Boholst, M.D.'s NPI number?

Brian Boholst, M.D.'s National Provider Identifier (NPI) is 1235181959, issued on May 17, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Brian Boholst, M.D. located?

The NPPES record lists a practice address at 3245 N Halsted St, Chicago, IL, 60657. Phone: (312) 926-3627. Providers update this record themselves, so call before visiting.

How can I verify Brian Boholst, M.D.'s license?

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 Brian Boholst, M.D. prescribe under Medicare Part D?

In 2024, Brian Boholst, M.D. had 2,212 Medicare Part D claims for 188 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

What is Brian Boholst, M.D.'s MIPS final score?

The 2023 MIPS final score is 94.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.

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.