NPI registry status
Active
2026 NPPES data Surgery Physician NPI 1598717787 D.O.
Verify on CMS → Randall Messerly, D.O.
Surgery Physician in Manchester, Iowa.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 36,778 in Surgery 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
57
Medicare Part D claims · 39 beneficiaries · Surgery Physician avg: 174
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Randall Messerly, D.O. filed 57 Medicare Part D claims in 2024 as a Surgery Physician in Manchester, Iowa.
- 57
- Part D claims, 2024
- Likely
- board-certified (heuristic)
- ≥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 Randall Messerly, D.O.
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 1598717787), first enumerated 05/16/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 57 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
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- 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.
CMS NPPES provider registry desk
NPI 1598717787 · Surgery Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-TRACE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1598717787
- ENUM-LEGACY 2006
- TAX-MID 37K Surgery Physician
- RX-TRACE 57
- BOOK-THIN 451 in Iowa
- PHOTO-ENUM Samuel Mapp, M.D. · 2006
Randall Messerly, D.O.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
57 ≥ 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 certification likely (heuristic, not verified)
Randall Messerly, D.O. 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 Randall Messerly, D.O.?
Quality data not reportedPrimary specialty
Surgery Physician
Medicare Part D claims
57 67% vs specialty avg
Specialty distribution in Iowa
How Surgery Physician compares to other specialties among Iowa 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 Surgery 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 | 1598717787 |
|---|---|
| Specialty | Surgery Physician |
| Credentials | D.O. |
| Gender | Male |
| NPI Issued | 05/16/2006 |
Hospital and facility affiliations
Facilities where Randall Messerly, D.O. 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.
Delaware County Memorial Hospital
Manchester, IA
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 2024.
57
Total Claims
$921
Total Drug Cost
39
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 117.667
- Total Day Supply
- 2,882
- Brand Drug Cost
- $0
- Generic Drug Cost
- $921
- Opioid Claims
- 16 (28.1% rate)
Patient Demographics
- Average Patient Age
- 73.5 years
- Avg HCC Risk Score
- 0.92
- Gender Split
- 41% female / 59% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Omeprazole | 31 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 16 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Surgery Physician Overview
How Randall Messerly, D.O. fits within the Surgery Physician landscape nationally.
36,778
Surgery Physician Providers in US
56
States with Surgery Physician
174
Avg Claims per Provider
Randall Messerly, D.O.'s 57 claims are below the specialty average of 174.
Nationwide Surgery Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Messerly, both outside Iowa 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 Surgery Physician Providers in Iowa
Other clinicians with the same primary specialty enrolled in Iowa, drawn from the same CMS NPPES roster as Messerly.
One of 451 Surgery Physician providers enrolled in Iowa, 5 are shown here.
Dr. David Aanestad
MD
Davenport, IA
Dr. Mark Abraham
MD
Carroll, IA
Josiah Adamson
Des Moines, IA
Dr. Johan Aerts
D.O.
Des Moines, IA
Dr. Patrick Ahrens
M.D.
Council Bluffs, IA
Compare Surgery Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Randall Messerly, D.O.'s specialty? ▼
Randall Messerly, D.O. specializes in Surgery Physician and practices in Manchester, Iowa. Credentials: D.O..
How much does Randall Messerly, D.O. prescribe under Medicare Part D? ▼
In 2024, Randall Messerly, D.O. wrote 57 Medicare Part D claims totaling $921 in drug costs for 39 beneficiaries.
Where is Randall Messerly, D.O. located? ▼
Randall Messerly, D.O. is located at 709 W MAIN ST, Manchester, IA, 52057. Phone: (563) 927-7401.
What is Randall Messerly, D.O.'s NPI number? ▼
Randall Messerly, D.O.'s National Provider Identifier (NPI) is 1598717787, issued on 05/16/2006.
Does Randall Messerly, D.O. prescribe opioids? ▼
Yes, Randall Messerly, D.O. had 16 opioid claims in 2024 with an opioid prescribing rate of 28.1%.
How many Surgery Physician providers are there in the US? ▼
There are 36,778 Surgery Physician providers across 56 states in the US. The average Surgery Physician provider writes 174 Medicare Part D claims per year.
What drugs does Randall Messerly, D.O. prescribe most often? ▼
Based on 2024 Medicare Part D data, Randall Messerly, D.O.'s most frequently prescribed drugs include Omeprazole, Hydrocodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Randall Messerly, D.O. accept Medicare? ▼
Randall Messerly, D.O. appears in CMS Medicare data with 57 Part D claims and 39 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Randall Messerly, D.O.'s credentials? ▼
Randall Messerly, D.O.'s NPI is 1598717787 with credentials D.O.. 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.