NPI registry status
Active
2026 NPPES data Neonatal-Perinatal Medicine Physician NPI 1003847641 M.D.
Verify on CMS → Werner Meier, M.D.
Neonatal-Perinatal Medicine 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 5,790 in Neonatal-Perinatal Medicine 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
19
Medicare Part D claims · Neonatal-Perinatal Medicine Physician avg: 68
What the federal data shows
Werner Meier, M.D. filed 19 Medicare Part D claims in 2024 as a Neonatal-Perinatal Medicine Physician in Chicago, Illinois.
- 19
- Part D claims, 2024
- ≥0th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Werner Meier, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1003847641), first enumerated 07/05/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 19 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
Compare Meier with other Neonatal-Perinatal Medicine Physician providers
Same primary specialty, same federal CMS NPPES roster.
Also enrolled in Illinois
- Dr. Tahmineh Abbasian, M.D. Glen Ellyn, IL
- Dr. Ryan Jay Abrigo, MD Chicago, IL
- Dr. Deborah Adegbosin, M.D. Chicago, IL
- Dr. Juanita Aguila-Corrales, MD Peoria, IL
- Dr. Mohamed Ahamed, M.D. Springfield, IL
- Dr. Gasudraz Ahmed, M.D., Park Ridge, IL
Other specialties in Chicago: Student in an Organized Health Care Education/Training Program (5,297) · Clinical Social Worker (4,054) · Internal Medicine Physician (3,291) · Physical Therapist (2,616)
CMS NPPES provider registry desk
NPI 1003847641 · Neonatal-Perinatal Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-TRACE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1003847641
- ENUM-LEGACY 2006
- TAX-MID 6K Neonatal-Perinatal Medicine
- RX-TRACE 19
- BOOK-THIN 285 in Illinois
- PHOTO-ENUM Robert Angert, M.D. · 2006
Werner Meier, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
19 ≥ 0th percentile 0% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
◑
Board-eligible specialty (heuristic, not verified)
Werner Meier, 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 Werner Meier, M.D.?
Quality data not reportedPrimary specialty
Neonatal-Perinatal Medicine Physician
Medicare Part D claims
19 72% vs specialty avg
Specialty distribution in Illinois
How Neonatal-Perinatal Medicine 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 Neonatal-Perinatal Medicine 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).
Practice Address
Provider Details
| NPI | 1003847641 |
|---|---|
| Specialty | Neonatal-Perinatal Medicine Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 07/05/2006 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
19
Total Claims
$4K
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 23.8
- Total Day Supply
- 576
- Generic Drug Cost
- $4K
Patient Demographics
- Average Patient Age
- 78.0 years
- Avg HCC Risk Score
- 1.06
More Neonatal-Perinatal Medicine Physician in IL →
All providers in Illinois →
Compare specialties →
Neonatal-Perinatal Medicine Physician Overview
How Werner Meier, M.D. fits within the Neonatal-Perinatal Medicine Physician landscape nationally.
5,790
Neonatal-Perinatal Medicine Physician Providers in US
52
States with Neonatal-Perinatal Medicine Physician
68
Avg Claims per Provider
Werner Meier, M.D.'s 19 claims are below the specialty average of 68.
Nationwide Neonatal-Perinatal Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Meier, both outside Illinois so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Neonatal-Perinatal Medicine Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Meier.
One of 285 Neonatal-Perinatal Medicine Physician providers enrolled in Illinois, 11 are shown on this page.
Dr. Natasha Ahn
MD
Chicago, IL
Fadhil Al Janabi
Chicago, IL
Dr. Mohammad Alattar
M.D.
Oak Lawn, IL
Dr. Shadi Alsmadi
MD
Chicago, IL
Dr. Sachin Amin
M.D.
Chicago, IL
Compare Neonatal-Perinatal Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Werner Meier, M.D.'s specialty? ▼
Werner Meier, M.D. specializes in Neonatal-Perinatal Medicine Physician and practices in Chicago, Illinois. Credentials: M.D..
How much does Werner Meier, M.D. prescribe under Medicare Part D? ▼
In 2024, Werner Meier, M.D. wrote 19 Medicare Part D claims totaling $4K in drug costs for N/A beneficiaries.
Where is Werner Meier, M.D. located? ▼
Werner Meier, M.D. is located at 1653 W CONGRESS PKWY, Chicago, IL, 60612. Phone: (312) 942-7154.
What is Werner Meier, M.D.'s NPI number? ▼
Werner Meier, M.D.'s National Provider Identifier (NPI) is 1003847641, issued on 07/05/2006.
How many Neonatal-Perinatal Medicine Physician providers are there in the US? ▼
There are 5,790 Neonatal-Perinatal Medicine Physician providers across 52 states in the US. The average Neonatal-Perinatal Medicine Physician provider writes 68 Medicare Part D claims per year.
Does Werner Meier, M.D. accept Medicare? ▼
Werner Meier, M.D. appears in CMS Medicare data with 19 Part D claims and N/A Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Werner Meier, M.D.'s credentials? ▼
Werner Meier, M.D.'s NPI is 1003847641 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 (2024). 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 August 2026 (NPPES) / 2024 (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
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 September 2026.