NPI registry status
Active
2026 NPPES data Transplant Surgery Physician NPI 1437139094 M.D.
Verify on CMS → John Brems, M.D.
Transplant Surgery Physician in Elgin, Illinois.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,026 in Transplant Surgery Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
288
Medicare Part D claims · 78 beneficiaries · Transplant Surgery Physician avg: 275
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
John Brems, M.D. filed 288 Medicare Part D claims in 2023 as a Transplant Surgery Physician in Elgin, Illinois.
- 288
- Part D claims, 2023
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
John Brems, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
288 49th percentile higher than 49% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
◑
Board-eligible specialty (heuristic, not verified)
John Brems, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about John Brems, M.D.?
Quality data not reportedPrimary specialty
Transplant Surgery Physician
Medicare Part D claims
288 5% vs specialty avg
Specialty distribution in Illinois
How Transplant Surgery Physician compares to other specialties among Illinois providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Transplant Surgery Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
John Brems, M.D. appears in the CMS NPPES registry as a Transplant Surgery Physician provider holding M.D. credentials at 1435 N RANDALL RD, Elgin, IL, 60123, with a listed phone of (224) 359-0100. NPI 1437139094 was issued on 01/19/2006.
Medicare Part D records for calendar year 2023 show 288 prescription claims written by this provider, covering 78 Medicare beneficiaries and totaling roughly $193K in drug spend, with an opioid prescribing rate of 25.3%.
Transplant Surgery Physician is a narrow specialty nationwide, with 1,026 enrolled providers across 48 states and an average of 275 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1437139094 |
|---|---|
| Specialty | Transplant Surgery Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 01/19/2006 |
License & disciplinary context - Illinois IDFPR 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~42K Illinois medical licensees in 2023 - they are NOT specific to John Brems, M.D.. To verify John Brems, M.D.'s current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases
IDFPR publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Illinois disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
288
Total Claims
$193K
Total Drug Cost
78
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 368
- Total Day Supply
- 8,220
- Generic Drug Cost
- $4K
- Opioid Claims
- 73 (25.3% rate)
- Antibiotic Claims
- 22
Patient Demographics
- Average Patient Age
- 73.6 years
- Avg HCC Risk Score
- 1.91
- Gender Split
- 46% female / 54% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What John Brems, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Pantoprazole Sodium
Pantoprazole Sodium
48 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
39 claims
- Creon
Creon
37 claims
- Tramadol Hcl
Tramadol Hcl
34 claims
- Tamsulosin Hcl
Tamsulosin Hcl
22 claims
- Zenpep 13
Zenpep
13 claims
| Drug | Claims |
|---|---|
| Pantoprazole Sodium | 48 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 39 |
| Creon Lipase/Protease/Amylase | 37 |
| Tramadol Hcl | 34 |
| Tamsulosin Hcl | 22 |
| Zenpep Lipase/Protease/Amylase | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Transplant Surgery Physician Overview
How John Brems, M.D. fits within the Transplant Surgery Physician landscape nationally.
1,026
Transplant Surgery Physician Providers in US
48
States with Transplant Surgery Physician
275
Avg Claims per Provider
John Brems, M.D.'s 288 claims are above the specialty average of 275.
Nearby Transplant Surgery Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Brems.
Dr. Michael Abecassis
MD
Chicago, IL
Dr. Stepan Akshelyan
MD
Peoria, IL
Dr. Jorge Almario
MD.
Maywood, IL
Aqeel Ashraf
Chicago, IL
Dr. Piotr Bachul
MD
Chicago, IL
Compare Transplant Surgery Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Illinois medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Transplant Surgery Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is John Brems, M.D.'s specialty? ▼
John Brems, M.D. specializes in Transplant Surgery Physician and practices in Elgin, Illinois. Credentials: M.D..
How much does John Brems, M.D. prescribe under Medicare Part D? ▼
In 2023, John Brems, M.D. wrote 288 Medicare Part D claims totaling $193K in drug costs for 78 beneficiaries.
Where is John Brems, M.D. located? ▼
John Brems, M.D. is located at 1435 N RANDALL RD, Elgin, IL, 60123. Phone: (224) 359-0100.
What is John Brems, M.D.'s NPI number? ▼
John Brems, M.D.'s National Provider Identifier (NPI) is 1437139094, issued on 01/19/2006.
Does John Brems, M.D. prescribe opioids? ▼
Yes, John Brems, M.D. had 73 opioid claims in 2023 with an opioid prescribing rate of 25.3%.
How many Transplant Surgery Physician providers are there in the US? ▼
There are 1,026 Transplant Surgery Physician providers across 48 states in the US. The average Transplant Surgery Physician provider writes 275 Medicare Part D claims per year.
What drugs does John Brems, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, John Brems, M.D.'s most frequently prescribed drugs include Pantoprazole Sodium, Hydrocodone-Acetaminophen, Creon. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Brems, M.D. accept Medicare? ▼
John Brems, M.D. appears in CMS Medicare data with 288 Part D claims and 78 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Brems, M.D.'s credentials? ▼
John Brems, M.D.'s NPI is 1437139094 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.