NPI registry status
Active
2026 NPPES data Adult Medicine Physician NPI 1477058949 DO
Verify on CMS → Ian Roslawski, DO
Adult Medicine Physician in Saint Louis, Missouri.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 2,481 in Adult 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
89
Medicare Part D claims · 53 beneficiaries · Adult Medicine Physician avg: 3K
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Ian Roslawski, DO filed 89 Medicare Part D claims in 2023 as a Adult Medicine Physician in Saint Louis, Missouri.
- 89
- 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.
Ian Roslawski, DO's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
89 0th percentile higher than 0% 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)
Ian Roslawski, DO practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations - 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 Ian Roslawski, DO?
Quality data not reportedPrimary specialty
Adult Medicine Physician
Medicare Part D claims
89 97% vs specialty avg
Specialty distribution in Missouri
How Adult Medicine Physician compares to other specialties among Missouri 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 Adult 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).
Ian Roslawski, DO appears in the CMS NPPES registry as a Adult Medicine Physician provider holding DO credentials at 10010 KENNERLY RD, Saint Louis, MO, 63128, with a listed phone of (314) 525-1000. NPI 1477058949 was issued on 03/27/2018.
Medicare Part D records for calendar year 2023 show 89 prescription claims written by this provider, covering 53 Medicare beneficiaries and totaling roughly $10K in drug spend.
Adult Medicine Physician is a narrow specialty nationwide, with 2,481 enrolled providers across 52 states and an average of 2,807 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 | 1477058949 |
|---|---|
| Specialty | Adult Medicine Physician |
| Credentials | DO |
| Gender | Male |
| NPI Issued | 03/27/2018 |
Hospital and facility affiliations
Facilities where Ian Roslawski, DO 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.
Hospital Physician Services - Southeast Professional Corporation
Montgomery, AL
St Anthonys Physician Organization Hospitalist Services LC
Saint Louis, MO
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
89
Total Claims
$10K
Total Drug Cost
53
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 127
- Total Day Supply
- 3,081
- Generic Drug Cost
- $1K
Patient Demographics
- Average Patient Age
- 70.1 years
- Avg HCC Risk Score
- 1.88
- Gender Split
- 66% female / 34% male
- Age Distribution
- <65: 17, 65-74: 17, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Prednisone | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Adult Medicine Physician Overview
How Ian Roslawski, DO fits within the Adult Medicine Physician landscape nationally.
2,481
Adult Medicine Physician Providers in US
52
States with Adult Medicine Physician
2,807
Avg Claims per Provider
Ian Roslawski, DO's 89 claims are below the specialty average of 2,807.
Nearby Adult Medicine Physician Providers in Missouri
Other clinicians with the same primary specialty enrolled in Missouri, drawn from the same CMS NPPES roster as Roslawski.
Azalie Armknecht
Branson, MO
Dr. Thomas Benton
M.D.
West Plains, MO
Dr. James Bernard
MD
Caruthersville, MO
Dr. Gary Campbell
DO
Chesterfield, MO
Dr. Michael Cole
MD
Saint Louis, MO
Compare Adult Medicine 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 Missouri medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Adult Medicine 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Missouri
Frequently Asked Questions
What is Ian Roslawski, DO's specialty? ▼
Ian Roslawski, DO specializes in Adult Medicine Physician and practices in Saint Louis, Missouri. Credentials: DO.
How much does Ian Roslawski, DO prescribe under Medicare Part D? ▼
In 2023, Ian Roslawski, DO wrote 89 Medicare Part D claims totaling $10K in drug costs for 53 beneficiaries.
Where is Ian Roslawski, DO located? ▼
Ian Roslawski, DO is located at 10010 KENNERLY RD, Saint Louis, MO, 63128. Phone: (314) 525-1000.
What is Ian Roslawski, DO's NPI number? ▼
Ian Roslawski, DO's National Provider Identifier (NPI) is 1477058949, issued on 03/27/2018.
How many Adult Medicine Physician providers are there in the US? ▼
There are 2,481 Adult Medicine Physician providers across 52 states in the US. The average Adult Medicine Physician provider writes 2,807 Medicare Part D claims per year.
What drugs does Ian Roslawski, DO prescribe most often? ▼
Based on 2023 Medicare Part D data, Ian Roslawski, DO's most frequently prescribed drugs include Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ian Roslawski, DO accept Medicare? ▼
Ian Roslawski, DO appears in CMS Medicare data with 89 Part D claims and 53 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ian Roslawski, DO's credentials? ▼
Ian Roslawski, DO's NPI is 1477058949 with credentials DO. 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.