2026 NPPES data Addiction Medicine (Internal Medicine) Physician NPI 1447375233 M.D.
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CASEY FERGUSON, M.D.

Addiction Medicine (Internal Medicine) Physician in PORTLAND, 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
570
Medicare Part D claims · 71 beneficiaries · Addiction Medicine (Internal Medicine) Physician avg: 1K
MIPS score
87.7624/100
▲ 5 pts above national avg 83.1 · [object Object]

What the federal data shows

CASEY FERGUSON, M.D. reported a CMS MIPS final score of 87.7624/100 — above the 83.1 national average — and filed 570 Medicare Part D claims in 2023.

87.7624/100
MIPS score · +5 vs avg
570
Part D claims, 2023
Likely
board-certified (heuristic)

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.

CASEY FERGUSON, M.D.'s MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

88 Top 46% higher than 54% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). This entry sits in this band. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023

Board certification likely (heuristic — not verified)

CASEY FERGUSON, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 CASEY FERGUSON, M.D.?

High performer (top quartile)

NPI registry status

Active

Issued 03/20/2007

NPI 1447375233

Primary specialty

Addiction Medicine (Internal Medicine) Physician

Niche

553 US NPIs in this specialty

Medicare Part D claims

570 59% vs specialty avg

2023 prescription claims

Specialty avg: 1,403

MIPS final score

87.7624/100 4.662400000000005% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Oregon

How Addiction Medicine (Internal Medicine) Physician compares to other specialties among Oregon providers

Oregon providers

Addiction Medicine (Internal Medicine) Physician share within Oregon

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

Medicare quality performance — MIPS

CASEY FERGUSON, M.D.'s 2023 MIPS final score plotted against the Addiction Medicine (Internal Medicine) Physician national average

High performer (top quartile)
MIPS Final Score
87.7624/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Addiction Medicine (Internal Medicine) Physician) — 87.7624/100 vs national avg 83.1

0%100%National avg83%87.8%
MIPS final score (Addiction Medicine (Internal Medicine) Physician) — 87.7624/100 vs national avg 83.1

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).

CASEY FERGUSON, M.D. appears in the CMS NPPES registry as a Addiction Medicine (Internal Medicine) Physician provider holding M.D. credentials at 4805 NE GLISAN ST, PORTLAND, OR, 97213, with a listed phone of (503) 215-2392. NPI 1447375233 was issued on 03/20/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what FERGUSON 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 570 prescription claims written by this provider, covering 71 Medicare beneficiaries and totaling roughly $42K in drug spend, with an opioid prescribing rate of 5.6%. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 87.7624/100 for the 2023 performance year (Quality 85.1748, Cost 74.0332), compared with the national average of 83.1.

Addiction Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 553 enrolled providers across 46 states and an average of 1,403 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

4805 NE GLISAN ST
PORTLAND, OR 97213

Provider Details

NPI 1447375233
Specialty Addiction Medicine (Internal Medicine) Physician
Credentials M.D.
Gender Female
NPI Issued 03/20/2007

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

87.7624
Final Score
Avg: 83.1
85.1748
Quality
74.0332
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where CASEY FERGUSON, M.D. 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.

LEGACY CLINICS LLC
GRESHAM, OR

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 2023.

570
Total Claims
$42K
Total Drug Cost
71
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
585
Total Day Supply
11,890
Generic Drug Cost
$16K
Opioid Claims
32 (5.6% rate)
Antibiotic Claims
27

Patient Demographics

Average Patient Age
59.1 years
Avg HCC Risk Score
2.87
Gender Split
44% female / 56% male
Age Distribution
<65: 36, 65-74: 35, 75-84: 0, 85+: 0

Top Prescribed Drugs (Medicare Part D)

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

What CASEY FERGUSON, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Buprenorphine-Naloxone
Buprenorphine Hcl/Naloxone Hcl
55
Buprenorphine Hcl
38
Gabapentin
34
Oxycodone Hcl
29
Atorvastatin Calcium
25
Amlodipine Besylate
23
Escitalopram Oxalate
20
Levetiracetam
16
Omeprazole
15
Doxycycline Hyclate
12

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

Addiction Medicine (Internal Medicine) Physician Overview

How CASEY FERGUSON, M.D. fits within the Addiction Medicine (Internal Medicine) Physician landscape nationally.

553
Addiction Medicine (Internal Medicine) Physician Providers in US
46
States with Addiction Medicine (Internal Medicine) Physician
1,403
Avg Claims per Provider

CASEY FERGUSON, M.D.'s 570 claims are below the specialty average of 1,403.

Nearby Addiction Medicine (Internal Medicine) Physician Providers in Oregon

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

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

Frequently Asked Questions

What is CASEY FERGUSON, M.D.'s specialty?
CASEY FERGUSON, M.D. specializes in Addiction Medicine (Internal Medicine) Physician and practices in PORTLAND, Oregon. Credentials: M.D..
How much does CASEY FERGUSON, M.D. prescribe under Medicare Part D?
In 2023, CASEY FERGUSON, M.D. wrote 570 Medicare Part D claims totaling $42K in drug costs for 71 beneficiaries.
What is CASEY FERGUSON, M.D.'s Medicare quality score?
CASEY FERGUSON, M.D. has a CMS MIPS Final Score of 87.7624/100 (Quality: 85.1748, Cost: 74.0332). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is CASEY FERGUSON, M.D. located?
CASEY FERGUSON, M.D. is located at 4805 NE GLISAN ST, PORTLAND, OR, 97213. Phone: (503) 215-2392.
What is CASEY FERGUSON, M.D.'s NPI number?
CASEY FERGUSON, M.D.'s National Provider Identifier (NPI) is 1447375233, issued on 03/20/2007.
Does CASEY FERGUSON, M.D. prescribe opioids?
Yes, CASEY FERGUSON, M.D. had 32 opioid claims in 2023 with an opioid prescribing rate of 5.6%.
How many Addiction Medicine (Internal Medicine) Physician providers are there in the US?
There are 553 Addiction Medicine (Internal Medicine) Physician providers across 46 states in the US. The average Addiction Medicine (Internal Medicine) Physician provider writes 1,403 Medicare Part D claims per year.
What drugs does CASEY FERGUSON, M.D. prescribe most often?
Based on 2023 Medicare Part D data, CASEY FERGUSON, M.D.'s most frequently prescribed drugs include Buprenorphine-Naloxone, Buprenorphine Hcl, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CASEY FERGUSON, M.D. accept Medicare?
CASEY FERGUSON, M.D. appears in CMS Medicare data with 570 Part D claims and 71 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CASEY FERGUSON, M.D.'s credentials?
CASEY FERGUSON, M.D.'s NPI is 1447375233 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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