NPI registry status
Active
2026 NPPES data Allergy & Immunology Physician NPI 1396739298 MD
Verify on CMS → Paul Detjen, MD
Allergy & Immunology Physician in Kenilworth, 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 3,394 in Allergy & Immunology 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
802
Medicare Part D claims · 164 beneficiaries · Allergy & Immunology Physician avg: 764
Generic prescribing
61%
generic claims · 39% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
67.7/100
▼ 15 pts below national avg 83.1 · Mid-tier
Industry payments
$1.8K
79 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Paul Detjen, MD reported a CMS MIPS final score of 67.7/100 - below the 83.1 national average - and filed 802 Medicare Part D claims in 2023.
- 67.7/100
- MIPS score · -15 vs avg
- 802
- Part D claims, 2023
- 61%
- generic prescribing
- Likely
- board-certified (heuristic)
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.
Paul Detjen, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
68 7th percentile higher than 7% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Paul Detjen, MD sits
This provider among allergy & immunology physician peers
Across the 740 allergy & immunology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Paul Detjen, MD writes more Part D claims than 51% of them and scores higher on MIPS quality than 16% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one allergy & immunology physician peer from a representative sample of 60; the gold marker is Paul Detjen, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Paul Detjen, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Paul Detjen, MD?
Below national averagePrimary specialty
Allergy & Immunology Physician
Medicare Part D claims
802 5% vs specialty avg
MIPS final score
67.7/100 15.4 pts vs avg
Specialty distribution in Illinois
How Allergy & Immunology Physician compares to other specialties among Illinois providers
Medicare quality performance, MIPS
Paul Detjen, MD's 2023 MIPS final score plotted against the Allergy & Immunology Physician national average
- MIPS Final Score
- 67.7/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Allergy & Immunology Physician) - 67.7/100 vs national avg 83.1
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).
Paul Detjen, MD appears in the CMS NPPES registry as an Allergy & Immunology Physician provider holding MD credentials at 534 GREEN BAY RD, Kenilworth, IL, 60043, with a listed phone of (847) 256-5505. NPI 1396739298 was issued on 09/07/2005.
Medicare Part D records for calendar year 2023 show 802 prescription claims written by this provider, covering 164 Medicare beneficiaries and totaling roughly $268K in drug spend, split 39% brand-name and 61% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 67.7/100 for the 2023 performance year (Quality 50, Cost 58.1), compared with the national average of 83.1.
Allergy & Immunology Physician is a narrow specialty nationwide, with 3,394 enrolled providers across 52 states and an average of 764 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 | 1396739298 |
|---|---|
| Specialty | Allergy & Immunology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 09/07/2005 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
67.6844
Final Score
Avg: 83.1
49.9655
Quality
58.149
Cost
81
Promoting Interoperability
Reporting: Individual
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Paul Detjen, MD. Source: openpaymentsdata.cms.gov.
Total received
$1.8K
Largest payer
AstraZeneca Pharmaceuticals LP
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
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 Paul Detjen, MD. To verify Paul Detjen, MD'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.
Brand vs generic prescribing mix · Above average
Paul Detjen, MD - brand share 39.0%
Allergy & Immunology Physician average
39% brand-name claims vs 61% generic, on 802 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
802
Total Claims
$268K
Total Drug Cost
164
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,392
- Total Day Supply
- 39,072
- Brand vs Generic
- 39% brand / 61% generic
- Brand Drug Cost
- $246K
- Generic Drug Cost
- $23K
- Antibiotic Claims
- 30
Patient Demographics
- Average Patient Age
- 75.4 years
- Avg HCC Risk Score
- 0.84
- Gender Split
- 67% female / 33% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Paul Detjen, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Montelukast Sodium
Montelukast Sodium
123 claims
- Azelastine Hcl
Azelastine Hcl
75 claims
- Fluticasone Propio…
Fluticasone Propionate
61 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
52 claims
- Ipratropium Bromide
Ipratropium Bromide
51 claims
- Advair Diskus 44
Advair Diskus
44 claims
- Symbicort 44
Symbicort
44 claims
- Advair Hfa 40
Advair Hfa
40 claims
| Drug | Claims |
|---|---|
| Montelukast Sodium | 123 |
| Azelastine Hcl | 75 |
| Fluticasone Propionate | 61 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 52 |
| Ipratropium Bromide | 51 |
| Advair Diskus Fluticasone Propion/Salmeterol | 44 |
| Symbicort Budesonide/Formoterol Fumarate | 44 |
| Advair Hfa Fluticasone Propion/Salmeterol | 40 |
| Prednisone | 37 |
| Omeprazole | 24 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Allergy & Immunology Physician Overview
How Paul Detjen, MD fits within the Allergy & Immunology Physician landscape nationally.
3,394
Allergy & Immunology Physician Providers in US
52
States with Allergy & Immunology Physician
764
Avg Claims per Provider
Paul Detjen, MD's 802 claims are above the specialty average of 764.
Nearby Allergy & Immunology Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Detjen.
Dr. Daryn Abraham
M.D.
St Charles, IL
Dr. Justine Ade
MD
Urbana, IL
Dr. Miguel Alcordo
M.D.
Tinley Park, IL
Dr. Ingrid Alexander
MD
Springfield, IL
Dr. Hetal Amin
MD
Channahon, IL
Compare Allergy & Immunology 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 Allergy & Immunology 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 Paul Detjen, MD's specialty? ▼
Paul Detjen, MD specializes in Allergy & Immunology Physician and practices in Kenilworth, Illinois. Credentials: MD.
How much does Paul Detjen, MD prescribe under Medicare Part D? ▼
In 2023, Paul Detjen, MD wrote 802 Medicare Part D claims totaling $268K in drug costs for 164 beneficiaries.
What is Paul Detjen, MD's Medicare quality score? ▼
Paul Detjen, MD has a CMS MIPS Final Score of 67.7/100 (Quality: 50, Cost: 58.1). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Paul Detjen, MD located? ▼
Paul Detjen, MD is located at 534 GREEN BAY RD, Kenilworth, IL, 60043. Phone: (847) 256-5505.
What is Paul Detjen, MD's NPI number? ▼
Paul Detjen, MD's National Provider Identifier (NPI) is 1396739298, issued on 09/07/2005.
Does Paul Detjen, MD prescribe more brand-name or generic drugs? ▼
Paul Detjen, MD's prescribing is 39% brand-name and 61% generic drugs by claim count, with $246K in brand drug costs.
How many Allergy & Immunology Physician providers are there in the US? ▼
There are 3,394 Allergy & Immunology Physician providers across 52 states in the US. The average Allergy & Immunology Physician provider writes 764 Medicare Part D claims per year.
What drugs does Paul Detjen, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Paul Detjen, MD's most frequently prescribed drugs include Montelukast Sodium, Azelastine Hcl, Fluticasone Propionate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Paul Detjen, MD accept Medicare? ▼
Paul Detjen, MD appears in CMS Medicare data with 802 Part D claims and 164 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Paul Detjen, MD's credentials? ▼
Paul Detjen, MD's NPI is 1396739298 with credentials MD. 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.