2026 NPPES data Geriatric Medicine (Family Medicine) Physician NPI 1871566471 M.D.
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RONALD GILSON, M.D.

Geriatric Medicine (Family Medicine) Physician in EUGENE, Oregon. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
482
Medicare Part D claims · 21 beneficiaries · Geriatric Medicine (Family Medicine) Physician avg: 5K
What the federal data reveals: RONALD GILSON, M.D. is a Geriatric Medicine (Family Medicine) Physician ([object Object]) practicing in EUGENE, Oregon with a Medicare Part D prescribing footprint of 482 claims across 21 beneficiaries .

What stands out: RONALD GILSON, M.D. filed 482 Medicare Part D claims in 2023 across EUGENE, Oregon. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

RONALD GILSON, 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).

RONALD GILSON, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 02/13/2006

NPI 1871566471

Primary specialty

Geriatric Medicine (Family Medicine) Physician

Niche

1,779 US NPIs in this specialty

Medicare Part D claims

482 90% vs specialty avg

2023 prescription claims

Specialty avg: 4,854

Specialty distribution in Oregon

How Geriatric Medicine (Family Medicine) Physician compares to other specialties among Oregon providers

Oregon providers

Geriatric Medicine (Family Medicine) Physician share within Oregon

1. Geriatric Medicine (Family Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Geriatric Medicine (Family Medicine) Physician share within Oregon

Specialty board-certification context

Estimated specialty board-certified rate — Geriatric Medicine (Family Medicine) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Geriatric Medicine (Family Medicine) Physician ABMS/AOA estimate

Est. board-certified rate (Geriatric Medicine (Family Medicine) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Geriatric Medicine (Family Medicine) Physician) — ABMS / AOA estimate

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).

RONALD GILSON, M.D. is a Geriatric Medicine (Family Medicine) Physician provider practicing in EUGENE, Oregon, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1871566471. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

RONALD GILSON, M.D. appears in the CMS NPPES registry as a Geriatric Medicine (Family Medicine) Physician provider holding M.D. credentials at 4010 AERIAL WAY, EUGENE, OR, 97402, with a listed phone of (541) 349-7282. NPI 1871566471 was issued on 02/13/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GILSON most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 482 prescription claims written by this provider, covering 21 Medicare beneficiaries and totaling roughly $29K in drug spend, with an opioid prescribing rate of 5.2%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Geriatric Medicine (Family Medicine) Physician is a narrow specialty nationwide, with 1,779 enrolled providers across 52 states and an average of 4,854 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

4010 AERIAL WAY
EUGENE, OR 97402

Provider Details

NPI 1871566471
Specialty Geriatric Medicine (Family Medicine) Physician
Credentials M.D.
Gender Male
NPI Issued 02/13/2006

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

482
Total Claims
$29K
Total Drug Cost
21
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
482
Total Day Supply
11,168
Generic Drug Cost
$10K
Opioid Claims
25 (5.2% rate)
Antibiotic Claims
17

Patient Demographics

Average Patient Age
88.8 years
Avg HCC Risk Score
1.24

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Lisinopril
30
Eliquis
Apixaban
29
Quetiapine Fumarate
28
Fentanyl
21
Levothyroxine Sodium
19
Atorvastatin Calcium
17
Amlodipine Besylate
16
Omeprazole
15
Simvastatin
15
Levetiracetam
12

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Geriatric Medicine (Family Medicine) Physician Overview

How RONALD GILSON, M.D. fits within the Geriatric Medicine (Family Medicine) Physician landscape nationally.

1,779
Geriatric Medicine (Family Medicine) Physician Providers in US
52
States with Geriatric Medicine (Family Medicine) Physician
4,854
Avg Claims per Provider

RONALD GILSON, M.D.'s 482 claims are below the specialty average of 4,854.

Nearby Geriatric Medicine (Family Medicine) Physician Providers in Oregon

Other clinicians with the same primary specialty enrolled in Oregon, drawn from the same CMS NPPES roster as GILSON.

Compare Geriatric Medicine (Family Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is RONALD GILSON, M.D.'s specialty?
RONALD GILSON, M.D. specializes in Geriatric Medicine (Family Medicine) Physician and practices in EUGENE, Oregon. Credentials: M.D..
How much does RONALD GILSON, M.D. prescribe under Medicare Part D?
In 2023, RONALD GILSON, M.D. wrote 482 Medicare Part D claims totaling $29K in drug costs for 21 beneficiaries.
Where is RONALD GILSON, M.D. located?
RONALD GILSON, M.D. is located at 4010 AERIAL WAY, EUGENE, OR, 97402. Phone: (541) 349-7282.
What is RONALD GILSON, M.D.'s NPI number?
RONALD GILSON, M.D.'s National Provider Identifier (NPI) is 1871566471, issued on 02/13/2006.
Does RONALD GILSON, M.D. prescribe opioids?
Yes, RONALD GILSON, M.D. had 25 opioid claims in 2023 with an opioid prescribing rate of 5.2%.
How many Geriatric Medicine (Family Medicine) Physician providers are there in the US?
There are 1,779 Geriatric Medicine (Family Medicine) Physician providers across 52 states in the US. The average Geriatric Medicine (Family Medicine) Physician provider writes 4,854 Medicare Part D claims per year.
What drugs does RONALD GILSON, M.D. prescribe most often?
Based on 2023 Medicare Part D data, RONALD GILSON, M.D.'s most frequently prescribed drugs include Lisinopril, Eliquis, Quetiapine Fumarate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does RONALD GILSON, M.D. accept Medicare?
RONALD GILSON, M.D. appears in CMS Medicare data with 482 Part D claims and 21 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify RONALD GILSON, M.D.'s credentials?
RONALD GILSON, M.D.'s NPI is 1871566471 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

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