NPI registry status
Active
2026 NPPES data Rheumatology Physician NPI 1134152739 M.D.
Verify on CMS → David Mael, M.D.
Rheumatology Physician in Chicago, 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 6,181 in Rheumatology 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
3K
Medicare Part D claims · 451 beneficiaries · Rheumatology Physician avg: 2K
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
David Mael, M.D. filed 3,434 Medicare Part D claims in 2023 as a Rheumatology Physician in Chicago, Illinois.
- 3K
- Part D claims, 2023
- 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.
David Mael, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
3,434 Top 10% higher than 90% 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)
David Mael, 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 David Mael, M.D.?
Quality data not reportedPrimary specialty
Rheumatology Physician
Medicare Part D claims
3,434 67% vs specialty avg
Specialty distribution in Illinois
How Rheumatology 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 Rheumatology 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).
David Mael, M.D. appears in the CMS NPPES registry as a Rheumatology Physician provider holding M.D. credentials at 3000 N HALSTED ST, Chicago, IL, 60657, with a listed phone of (773) 296-7150. NPI 1134152739 was issued on 07/08/2006.
Medicare Part D records for calendar year 2023 show 3,434 prescription claims written by this provider, covering 451 Medicare beneficiaries and totaling roughly $2.8 million in drug spend, with an opioid prescribing rate of 7.1%.
Rheumatology Physician is a mid-sized specialty nationwide, with 6,181 enrolled providers across 52 states and an average of 2,054 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 | 1134152739 |
|---|---|
| Specialty | Rheumatology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 07/08/2006 |
Hospital and facility affiliations
Facilities where David Mael, 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.
Advocate Health And Hospitals Corporation
Chicago, 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 David Mael, M.D.. To verify David Mael, 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.
3,434
Total Claims
$2.8M
Total Drug Cost
451
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 5,720
- Total Day Supply
- 166,315
- Generic Drug Cost
- $92K
- Opioid Claims
- 243 (7.1% rate)
Patient Demographics
- Average Patient Age
- 71.3 years
- Avg HCC Risk Score
- 1.56
- Gender Split
- 80% female / 20% male
- Age Distribution
- <65: 84, 65-74: 196, 75-84: 139, 85+: 32
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What David Mael, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Methotrexate
Methotrexate
323 claims
- Prednisone
Prednisone
289 claims
- Hydroxychloroquine…
Hydroxychloroquine Sulfate
265 claims
- Meloxicam
Meloxicam
211 claims
- Duloxetine Hcl
Duloxetine Hcl
199 claims
- Gabapentin
Gabapentin
180 claims
- Tramadol Hcl
Tramadol Hcl
166 claims
- Leflunomide
Leflunomide
133 claims
| Drug | Claims |
|---|---|
| Methotrexate Methotrexate Sodium | 323 |
| Prednisone | 289 |
| Hydroxychloroquine Sulfate | 265 |
| Meloxicam | 211 |
| Duloxetine Hcl | 199 |
| Gabapentin | 180 |
| Tramadol Hcl | 166 |
| Leflunomide | 133 |
| Humira(Cf) Pen Adalimumab | 112 |
| Celecoxib | 110 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Rheumatology Physician Overview
How David Mael, M.D. fits within the Rheumatology Physician landscape nationally.
6,181
Rheumatology Physician Providers in US
52
States with Rheumatology Physician
2,054
Avg Claims per Provider
David Mael, M.D.'s 3,434 claims are above the specialty average of 2,054.
Nearby Rheumatology Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Mael.
Dr. Elaine Adams
MD
Maywood, IL
Dr. Emem Adolf-Ubokudom
M.D.
Chicago, IL
Dr. Shri Agrawal
M.D.
Chicago, IL
Dr. Umber Ahmad
DO
McHenry, IL
Saba Ahmed
Chicago, IL
Compare Rheumatology 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 Rheumatology 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 David Mael, M.D.'s specialty? ▼
David Mael, M.D. specializes in Rheumatology Physician and practices in Chicago, Illinois. Credentials: M.D..
How much does David Mael, M.D. prescribe under Medicare Part D? ▼
In 2023, David Mael, M.D. wrote 3,434 Medicare Part D claims totaling $2.8M in drug costs for 451 beneficiaries.
Where is David Mael, M.D. located? ▼
David Mael, M.D. is located at 3000 N HALSTED ST, Chicago, IL, 60657. Phone: (773) 296-7150.
What is David Mael, M.D.'s NPI number? ▼
David Mael, M.D.'s National Provider Identifier (NPI) is 1134152739, issued on 07/08/2006.
Does David Mael, M.D. prescribe opioids? ▼
Yes, David Mael, M.D. had 243 opioid claims in 2023 with an opioid prescribing rate of 7.1%.
How many Rheumatology Physician providers are there in the US? ▼
There are 6,181 Rheumatology Physician providers across 52 states in the US. The average Rheumatology Physician provider writes 2,054 Medicare Part D claims per year.
What drugs does David Mael, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, David Mael, M.D.'s most frequently prescribed drugs include Methotrexate, Prednisone, Hydroxychloroquine Sulfate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does David Mael, M.D. accept Medicare? ▼
David Mael, M.D. appears in CMS Medicare data with 3,434 Part D claims and 451 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify David Mael, M.D.'s credentials? ▼
David Mael, M.D.'s NPI is 1134152739 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.