NPI registry status
Active
2026 NPPES data Gastroenterology Physician NPI 1316040553 M.D.
Verify on CMS → John Boydstun, M.D.
Gastroenterology Physician in Galesburg, 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 16,567 in Gastroenterology 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
124
Medicare Part D claims · 56 beneficiaries · Gastroenterology Physician avg: 833
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
John Boydstun, M.D. filed 124 Medicare Part D claims in 2023 as a Gastroenterology Physician in Galesburg, Illinois, prescribing 89% generic.
- 124
- Part D claims, 2023
- 89%
- generic prescribing
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.
John Boydstun, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
124 35th percentile higher than 35% 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-eligible specialty (heuristic, not verified)
John Boydstun, 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 John Boydstun, M.D.?
Quality data not reportedPrimary specialty
Gastroenterology Physician
Medicare Part D claims
124 85% vs specialty avg
Specialty distribution in Illinois
How Gastroenterology 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 Gastroenterology 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).
John Boydstun, M.D. appears in the CMS NPPES registry as a Gastroenterology Physician provider holding M.D. credentials at 3315 N SEMINARY ST, Galesburg, IL, 61401, with a listed phone of (309) 344-1000. NPI 1316040553 was issued on 09/06/2006.
Medicare Part D records for calendar year 2023 show 124 prescription claims written by this provider, covering 56 Medicare beneficiaries and totaling roughly $73K in drug spend, split 11% brand-name and 89% generic by claim count.
Gastroenterology Physician is a mid-sized specialty nationwide, with 16,567 enrolled providers across 54 states and an average of 833 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 | 1316040553 |
|---|---|
| Specialty | Gastroenterology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 09/06/2006 |
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 John Boydstun, M.D.. To verify John Boydstun, 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.
Brand vs generic prescribing mix · Typical
John Boydstun, M.D. - brand share 11.0%
Gastroenterology Physician average
11% brand-name claims vs 89% generic, on 124 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
124
Total Claims
$73K
Total Drug Cost
56
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 289
- Total Day Supply
- 8,475
- Brand vs Generic
- 11% brand / 89% generic
- Brand Drug Cost
- $62K
- Generic Drug Cost
- $11K
Patient Demographics
- Average Patient Age
- 72.6 years
- Avg HCC Risk Score
- 1.51
- Gender Split
- 52% female / 48% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Omeprazole | 26 |
| Azathioprine | 14 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Gastroenterology Physician Overview
How John Boydstun, M.D. fits within the Gastroenterology Physician landscape nationally.
16,567
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
833
Avg Claims per Provider
John Boydstun, M.D.'s 124 claims are below the specialty average of 833.
Nearby Gastroenterology Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Boydstun.
Dr. Abdul Aadam
M.D.
Chicago, IL
Dr. Richard Aaronson
M.D.
Olympia Fields, IL
Dr. Abdelhai Abdelqader
MD
Maywood, IL
Dr. Mustafa Abdul-Hussein
MD
Mattoon, IL
Dr. Ayokunle Abegunde
M.D.
Maywood, IL
Compare Gastroenterology 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 Gastroenterology 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 Illinois
Frequently Asked Questions
What is John Boydstun, M.D.'s specialty? ▼
John Boydstun, M.D. specializes in Gastroenterology Physician and practices in Galesburg, Illinois. Credentials: M.D..
How much does John Boydstun, M.D. prescribe under Medicare Part D? ▼
In 2023, John Boydstun, M.D. wrote 124 Medicare Part D claims totaling $73K in drug costs for 56 beneficiaries.
Where is John Boydstun, M.D. located? ▼
John Boydstun, M.D. is located at 3315 N SEMINARY ST, Galesburg, IL, 61401. Phone: (309) 344-1000.
What is John Boydstun, M.D.'s NPI number? ▼
John Boydstun, M.D.'s National Provider Identifier (NPI) is 1316040553, issued on 09/06/2006.
Does John Boydstun, M.D. prescribe more brand-name or generic drugs? ▼
John Boydstun, M.D.'s prescribing is 11% brand-name and 89% generic drugs by claim count, with $62K in brand drug costs.
How many Gastroenterology Physician providers are there in the US? ▼
There are 16,567 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 833 Medicare Part D claims per year.
What drugs does John Boydstun, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, John Boydstun, M.D.'s most frequently prescribed drugs include Omeprazole, Azathioprine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Boydstun, M.D. accept Medicare? ▼
John Boydstun, M.D. appears in CMS Medicare data with 124 Part D claims and 56 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Boydstun, M.D.'s credentials? ▼
John Boydstun, M.D.'s NPI is 1316040553 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.