NPI registry status
Active
2026 NPPES data Allergy Physician NPI 1407830136 M.D.
Verify on CMS → Mark Lowenthal, M.D.
Allergy Physician in Orland Park, 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 1,019 in Allergy 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
1K
Medicare Part D claims · 197 beneficiaries · Allergy Physician avg: 755
Generic prescribing
52%
generic claims · 48% brand-name · higher generic rates reduce patient out-of-pocket costs
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
Mark Lowenthal, M.D. filed 1,145 Medicare Part D claims in 2023 as a Allergy Physician in Orland Park, Illinois, prescribing 52% generic.
- 1K
- Part D claims, 2023
- 52%
- 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.
Mark Lowenthal, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,145 Top 23% higher than 77% 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 certification likely (heuristic, not verified)
Mark Lowenthal, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - 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 Mark Lowenthal, M.D.?
Quality data not reportedPrimary specialty
Allergy Physician
Medicare Part D claims
1,145 52% vs specialty avg
Specialty distribution in Illinois
How Allergy 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 Allergy 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).
Mark Lowenthal, M.D. appears in the CMS NPPES registry as a Allergy Physician provider holding M.D. credentials at 10733 W. 165TH ST., Orland Park, IL, 60467, with a listed phone of (708) 957-7468. NPI 1407830136 was issued on 12/06/2005.
Medicare Part D records for calendar year 2023 show 1,145 prescription claims written by this provider, covering 197 Medicare beneficiaries and totaling roughly $417K in drug spend, split 48% brand-name and 52% generic by claim count.
Allergy Physician is a narrow specialty nationwide, with 1,019 enrolled providers across 49 states and an average of 755 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 | 1407830136 |
|---|---|
| Specialty | Allergy Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 12/06/2005 |
Hospital and facility affiliations
Facilities where Mark Lowenthal, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Associated Allergists And Asthma Specialists, Ltd
Highland Park, IL
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 Mark Lowenthal, M.D.. To verify Mark Lowenthal, 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.
Brand vs generic prescribing mix · Above average
Mark Lowenthal, M.D. - brand share 48.0%
Allergy Physician average
48% brand-name claims vs 52% generic, on 1,145 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.
1,145
Total Claims
$417K
Total Drug Cost
197
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,181
- Total Day Supply
- 61,940
- Brand vs Generic
- 48% brand / 52% generic
- Brand Drug Cost
- $395K
- Generic Drug Cost
- $23K
- Antibiotic Claims
- 48
Patient Demographics
- Average Patient Age
- 74.9 years
- Avg HCC Risk Score
- 0.89
- Gender Split
- 62% female / 38% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Mark Lowenthal, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Montelukast Sodium
Montelukast Sodium
173 claims
- Azelastine Hcl
Azelastine Hcl
116 claims
- Flovent Hfa
Flovent Hfa
79 claims
- Albuterol Sulfate … 61
Albuterol Sulfate Hfa
61 claims
- Fluticasone Propio… 58
Fluticasone Propionate
58 claims
- Ipratropium Bromide 57
Ipratropium Bromide
57 claims
- Arnuity Ellipta 50
Arnuity Ellipta
50 claims
- Levocetirizine Dih… 45
Levocetirizine Dihydrochloride
45 claims
| Drug | Claims |
|---|---|
| Montelukast Sodium | 173 |
| Azelastine Hcl | 116 |
| Flovent Hfa Fluticasone Propionate | 79 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 61 |
| Fluticasone Propionate | 58 |
| Ipratropium Bromide | 57 |
| Arnuity Ellipta Fluticasone Furoate | 50 |
| Levocetirizine Dihydrochloride | 45 |
| Pulmicort Flexhaler Budesonide | 45 |
| Advair Diskus Fluticasone Propion/Salmeterol | 44 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Allergy Physician Overview
How Mark Lowenthal, M.D. fits within the Allergy Physician landscape nationally.
1,019
Allergy Physician Providers in US
49
States with Allergy Physician
755
Avg Claims per Provider
Mark Lowenthal, M.D.'s 1,145 claims are above the specialty average of 755.
Nearby Allergy Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Lowenthal.
Dr. Surendra Agarwal
M.D.
Effingham, IL
Kenneth Arnett
Peoria, IL
Dr. Priya Bansal
M.D.,
Saint Charles, IL
Dr. Peter Baum
M.D.
Sycamore, IL
Dr. Howard Beede
M.D.
Decatur, IL
Compare Allergy 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 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 Mark Lowenthal, M.D.'s specialty? ▼
Mark Lowenthal, M.D. specializes in Allergy Physician and practices in Orland Park, Illinois. Credentials: M.D..
How much does Mark Lowenthal, M.D. prescribe under Medicare Part D? ▼
In 2023, Mark Lowenthal, M.D. wrote 1,145 Medicare Part D claims totaling $417K in drug costs for 197 beneficiaries.
Where is Mark Lowenthal, M.D. located? ▼
Mark Lowenthal, M.D. is located at 10733 W. 165TH ST., Orland Park, IL, 60467. Phone: (708) 957-7468.
What is Mark Lowenthal, M.D.'s NPI number? ▼
Mark Lowenthal, M.D.'s National Provider Identifier (NPI) is 1407830136, issued on 12/06/2005.
Does Mark Lowenthal, M.D. prescribe more brand-name or generic drugs? ▼
Mark Lowenthal, M.D.'s prescribing is 48% brand-name and 52% generic drugs by claim count, with $395K in brand drug costs.
How many Allergy Physician providers are there in the US? ▼
There are 1,019 Allergy Physician providers across 49 states in the US. The average Allergy Physician provider writes 755 Medicare Part D claims per year.
What drugs does Mark Lowenthal, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Mark Lowenthal, M.D.'s most frequently prescribed drugs include Montelukast Sodium, Azelastine Hcl, Flovent Hfa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mark Lowenthal, M.D. accept Medicare? ▼
Mark Lowenthal, M.D. appears in CMS Medicare data with 1,145 Part D claims and 197 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mark Lowenthal, M.D.'s credentials? ▼
Mark Lowenthal, M.D.'s NPI is 1407830136 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.