NPI registry status
Active
2026 NPPES data Pediatric Ophthalmology and Strabismus Specialist Physician NPI 1306423157 MD
Verify on CMS → Aaron Warning, MD
Pediatric Ophthalmology and Strabismus Specialist Physician in Columbia, 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 265 in Pediatric Ophthalmology and Strabismus Specialist 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
17
Medicare Part D claims · Pediatric Ophthalmology and Strabismus Specialist Physician avg: 228
What the federal data shows
Aaron Warning, MD filed 17 Medicare Part D claims in 2024 as a Pediatric Ophthalmology and Strabismus Specialist Physician in Columbia, Missouri.
- 17
- 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 Aaron Warning, MD
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 1306423157), first enumerated 03/26/2021.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 17 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 Warning with other Pediatric Ophthalmology and Strabismus Specialist Physician providers
Same primary specialty, same federal CMS NPPES roster.
Also enrolled in Missouri
- Dr. Katherine Brown, MD Kansas City, MO
- Dr. Maggie Cardonell, M.D. Columbia, MO
- Dr. Komal Desai, M.D. Kansas City, MO
- Marlo Galli, CO Saint Louis, MO
- Richard Helms, MD PHD Kansas City, MO
- Dr. Katherine Kindle, MD Saint Louis, MO
Other specialties in Columbia: Internal Medicine Physician (341) · Clinical Social Worker (295) · Professional Counselor (237) · Pharmacist (229)
CMS NPPES provider registry desk
NPI 1306423157 · Pediatric Ophthalmology and Strabismus Specialist Physician
NPI-10 · ENUM-RECENT · TAX-TRACE · RX-TRACE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1306423157
- ENUM-RECENT 2021
- TAX-TRACE 265
- RX-TRACE 17
- BOOK-THIN 10 in Missouri
- PHOTO-ENUM Agni Kakouri, MD · 2021
Aaron Warning, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
17 ≥ 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)
Aaron Warning, MD 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 Aaron Warning, MD?
Quality data not reportedPrimary specialty
Pediatric Ophthalmology and Strabismus Specialist Physician
Medicare Part D claims
17 93% vs specialty avg
Specialty distribution in Missouri
How Pediatric Ophthalmology and Strabismus Specialist 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 Pediatric Ophthalmology and Strabismus Specialist 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 | 1306423157 |
|---|---|
| Specialty | Pediatric Ophthalmology and Strabismus Specialist Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 03/26/2021 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
17
Total Claims
$268
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 24.2
- Total Day Supply
- 659
- Generic Drug Cost
- $197
Patient Demographics
- Average Patient Age
- 67.8 years
- Avg HCC Risk Score
- 2.26
More Pediatric Ophthalmology and Strabismus Specialist Physician in MO →
All providers in Missouri →
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Pediatric Ophthalmology and Strabismus Specialist Physician Overview
How Aaron Warning, MD fits within the Pediatric Ophthalmology and Strabismus Specialist Physician landscape nationally.
265
Pediatric Ophthalmology and Strabismus Specialist Physician Providers in US
42
States with Pediatric Ophthalmology and Strabismus Specialist Physician
228
Avg Claims per Provider
Aaron Warning, MD's 17 claims are below the specialty average of 228.
Nationwide Pediatric Ophthalmology and Strabismus Specialist Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Warning, both outside Missouri so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2021)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Pediatric Ophthalmology and Strabismus Specialist Physician Providers in Missouri
Other clinicians with the same primary specialty enrolled in Missouri, drawn from the same CMS NPPES roster as Warning.
One of 10 Pediatric Ophthalmology and Strabismus Specialist Physician providers enrolled in Missouri, 9 are shown on this page.
Frequently Asked Questions
What is Aaron Warning, MD's specialty? ▼
Aaron Warning, MD specializes in Pediatric Ophthalmology and Strabismus Specialist Physician and practices in Columbia, Missouri. Credentials: MD.
How much does Aaron Warning, MD prescribe under Medicare Part D? ▼
In 2024, Aaron Warning, MD wrote 17 Medicare Part D claims totaling $268 in drug costs for N/A beneficiaries.
Where is Aaron Warning, MD located? ▼
Aaron Warning, MD is located at 3215 WINGATE CT STE 102, Columbia, MO, 65201. Phone: (573) 884-3937.
What is Aaron Warning, MD's NPI number? ▼
Aaron Warning, MD's National Provider Identifier (NPI) is 1306423157, issued on 03/26/2021.
How many Pediatric Ophthalmology and Strabismus Specialist Physician providers are there in the US? ▼
There are 265 Pediatric Ophthalmology and Strabismus Specialist Physician providers across 42 states in the US. The average Pediatric Ophthalmology and Strabismus Specialist Physician provider writes 228 Medicare Part D claims per year.
Does Aaron Warning, MD accept Medicare? ▼
Aaron Warning, MD appears in CMS Medicare data with 17 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 Aaron Warning, MD's credentials? ▼
Aaron Warning, MD's NPI is 1306423157 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 (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 August 2026.