2026 NPPES data Internal Medicine Physician NPI 1548221120 M. D.
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CRAIG AMUNDSON, M. D.

Internal Medicine Physician in MADISONVILLE, Kentucky. 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
5K
Medicare Part D claims · 181 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: CRAIG AMUNDSON, M. D. is a Internal Medicine Physician ([object Object]) practicing in MADISONVILLE, Kentucky with a Medicare Part D prescribing footprint of 5K claims across 181 beneficiaries — 14% brand-name prescribing .

What stands out: CRAIG AMUNDSON, M. D. filed 5,411 Medicare Part D claims in 2023 across MADISONVILLE, Kentucky. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

CRAIG AMUNDSON, 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).

CRAIG AMUNDSON, M. D. at a glance

Quality data not reported

NPI registry status

Active

Issued 03/31/2006

NPI 1548221120

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

5,411 99% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Kentucky

How Internal Medicine Physician compares to other specialties among Kentucky providers

Kentucky providers

Internal Medicine Physician share within Kentucky

1. Internal Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Internal Medicine Physician share within Kentucky

Specialty board-certification context

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

Quality data not reported
Est. board-certified rate
78%
Internal Medicine Physician ABMS/AOA estimate

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

0%100%78%
Est. board-certified rate (Internal 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).

CRAIG AMUNDSON, M. D. is a Internal Medicine Physician provider practicing in MADISONVILLE, Kentucky, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M. D.. NPI: 1548221120. 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.

CRAIG AMUNDSON, M. D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M. D. credentials at 444 S MAIN ST, MADISONVILLE, KY, 42431, with a listed phone of (270) 821-4444. NPI 1548221120 was issued on 03/31/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what AMUNDSON 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 5,411 prescription claims written by this provider, covering 181 Medicare beneficiaries and totaling roughly $512K in drug spend, split 14% brand-name and 86% generic by claim count. 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

444 S MAIN ST
MADISONVILLE, KY 42431

Provider Details

NPI 1548221120
Specialty Internal Medicine Physician
Credentials M. D.
Gender Male
NPI Issued 03/31/2006

Brand vs generic prescribing mix · Typical

CRAIG AMUNDSON, M. D. — brand share 14.0%
Specialty average (est.)

14% brand-name claims vs 86% generic, on 5,411 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.

5,411
Total Claims
$512K
Total Drug Cost
181
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
9,955
Total Day Supply
287,430
Brand vs Generic
14% brand / 86% generic
Brand Drug Cost
$419K
Generic Drug Cost
$90K
Antibiotic Claims
147

Patient Demographics

Average Patient Age
70.5 years
Avg HCC Risk Score
1.28
Gender Split
53% female / 47% male
Age Distribution
<65: 38, 65-74: 79, 75-84: 49, 85+: 15

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Levothyroxine Sodium
198
Atorvastatin Calcium
192
Gabapentin
173
Losartan Potassium
172
Lisinopril
169
Furosemide
140
Alprazolam
139
Amlodipine Besylate
137
Zolpidem Tartrate
121
Albuterol Sulfate Hfa
Albuterol Sulfate
120

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

Internal Medicine Physician Overview

How CRAIG AMUNDSON, M. D. fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

CRAIG AMUNDSON, M. D.'s 5,411 claims are above the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Kentucky

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

Compare Internal Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is CRAIG AMUNDSON, M. D.'s specialty?
CRAIG AMUNDSON, M. D. specializes in Internal Medicine Physician and practices in MADISONVILLE, Kentucky. Credentials: M. D..
How much does CRAIG AMUNDSON, M. D. prescribe under Medicare Part D?
In 2023, CRAIG AMUNDSON, M. D. wrote 5,411 Medicare Part D claims totaling $512K in drug costs for 181 beneficiaries.
Where is CRAIG AMUNDSON, M. D. located?
CRAIG AMUNDSON, M. D. is located at 444 S MAIN ST, MADISONVILLE, KY, 42431. Phone: (270) 821-4444.
What is CRAIG AMUNDSON, M. D.'s NPI number?
CRAIG AMUNDSON, M. D.'s National Provider Identifier (NPI) is 1548221120, issued on 03/31/2006.
Does CRAIG AMUNDSON, M. D. prescribe more brand-name or generic drugs?
CRAIG AMUNDSON, M. D.'s prescribing is 14% brand-name and 86% generic drugs by claim count, with $419K in brand drug costs.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does CRAIG AMUNDSON, M. D. prescribe most often?
Based on 2023 Medicare Part D data, CRAIG AMUNDSON, M. D.'s most frequently prescribed drugs include Levothyroxine Sodium, Atorvastatin Calcium, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CRAIG AMUNDSON, M. D. accept Medicare?
CRAIG AMUNDSON, M. D. appears in CMS Medicare data with 5,411 Part D claims and 181 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CRAIG AMUNDSON, M. D.'s credentials?
CRAIG AMUNDSON, M. D.'s NPI is 1548221120 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