2026 NPPES data Addiction Medicine (Psychiatry & Neurology) Physician NPI 1548206360 MD
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WILLIAM BUCKNAM, MD

Addiction Medicine (Psychiatry & Neurology) Physician in MADISON, Wisconsin. 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
1K
Medicare Part D claims · 52 beneficiaries · Addiction Medicine (Psychiatry & Neurology) Physician avg: 1K
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

WILLIAM BUCKNAM, MD filed 1,434 Medicare Part D claims in 2023 as a Addiction Medicine (Psychiatry & Neurology) Physician in MADISON, Wisconsin, prescribing 89% generic.

1K
Part D claims, 2023
89%
generic prescribing
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.

WILLIAM BUCKNAM, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

1,434 Top 20% higher than 80% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). This entry sits in this band. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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 certification likely (heuristic — not verified)

WILLIAM BUCKNAM, MD 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 WILLIAM BUCKNAM, MD?

Quality data not reported

NPI registry status

Active

Issued 06/21/2006

NPI 1548206360

Primary specialty

Addiction Medicine (Psychiatry & Neurology) Physician

Niche

658 US NPIs in this specialty

Medicare Part D claims

1,434 41% vs specialty avg

2023 prescription claims

Specialty avg: 1,019

Specialty distribution in Wisconsin

How Addiction Medicine (Psychiatry & Neurology) Physician compares to other specialties among Wisconsin providers

Wisconsin providers

Addiction Medicine (Psychiatry & Neurology) Physician share within Wisconsin

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

Specialty board-certification context

Estimated specialty board-certified rate — Addiction Medicine (Psychiatry & Neurology) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Addiction Medicine (Psychiatry & Neurology) Physician ABMS/AOA estimate

Est. board-certified rate (Addiction Medicine (Psychiatry & Neurology) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Addiction Medicine (Psychiatry & Neurology) 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).

WILLIAM BUCKNAM, MD appears in the CMS NPPES registry as a Addiction Medicine (Psychiatry & Neurology) Physician provider holding MD credentials at 1018 GAMMON LN, MADISON, WI, 53719, with a listed phone of (608) 417-8144. NPI 1548206360 was issued on 06/21/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BUCKNAM 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 1,434 prescription claims written by this provider, covering 52 Medicare beneficiaries and totaling roughly $413K in drug spend, split 11% brand-name and 89% 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.

Addiction Medicine (Psychiatry & Neurology) Physician is a narrow specialty nationwide, with 658 enrolled providers across 49 states and an average of 1,019 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

1018 GAMMON LN
MADISON, WI 53719

Provider Details

NPI 1548206360
Specialty Addiction Medicine (Psychiatry & Neurology) Physician
Credentials MD
Gender Male
NPI Issued 06/21/2006

Hospital and facility affiliations

Facilities where WILLIAM BUCKNAM, MD 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.

MERITER HOSPITAL INC
MADISON, WI

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Typical

WILLIAM BUCKNAM, MD — brand share 11.0%
Specialty average (est.)

11% brand-name claims vs 89% generic, on 1,434 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.

1,434
Total Claims
$413K
Total Drug Cost
52
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,857
Total Day Supply
51,076
Brand vs Generic
11% brand / 89% generic
Brand Drug Cost
$317K
Generic Drug Cost
$96K

Patient Demographics

Average Patient Age
53.7 years
Avg HCC Risk Score
1.42
Gender Split
63% female / 37% male
Age Distribution
<65: 38, 65-74: 12, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

What WILLIAM BUCKNAM, MD 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
Gabapentin
110
Desvenlafaxine Succinate Er
Desvenlafaxine Succinate
83
Clonazepam
72
Hydroxyzine Hcl
61
Buprenorphine-Naloxone
Buprenorphine Hcl/Naloxone Hcl
53
Prazosin Hcl
48
Trazodone Hcl
44
Naltrexone Hcl
43
Bupropion Hcl Sr
Bupropion Hcl
42
Lurasidone Hcl
42

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

Addiction Medicine (Psychiatry & Neurology) Physician Overview

How WILLIAM BUCKNAM, MD fits within the Addiction Medicine (Psychiatry & Neurology) Physician landscape nationally.

658
Addiction Medicine (Psychiatry & Neurology) Physician Providers in US
49
States with Addiction Medicine (Psychiatry & Neurology) Physician
1,019
Avg Claims per Provider

WILLIAM BUCKNAM, MD's 1,434 claims are above the specialty average of 1,019.

Nearby Addiction Medicine (Psychiatry & Neurology) Physician Providers in Wisconsin

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

Compare Addiction Medicine (Psychiatry & Neurology) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is WILLIAM BUCKNAM, MD's specialty?
WILLIAM BUCKNAM, MD specializes in Addiction Medicine (Psychiatry & Neurology) Physician and practices in MADISON, Wisconsin. Credentials: MD.
How much does WILLIAM BUCKNAM, MD prescribe under Medicare Part D?
In 2023, WILLIAM BUCKNAM, MD wrote 1,434 Medicare Part D claims totaling $413K in drug costs for 52 beneficiaries.
Where is WILLIAM BUCKNAM, MD located?
WILLIAM BUCKNAM, MD is located at 1018 GAMMON LN, MADISON, WI, 53719. Phone: (608) 417-8144.
What is WILLIAM BUCKNAM, MD's NPI number?
WILLIAM BUCKNAM, MD's National Provider Identifier (NPI) is 1548206360, issued on 06/21/2006.
Does WILLIAM BUCKNAM, MD prescribe more brand-name or generic drugs?
WILLIAM BUCKNAM, MD's prescribing is 11% brand-name and 89% generic drugs by claim count, with $317K in brand drug costs.
How many Addiction Medicine (Psychiatry & Neurology) Physician providers are there in the US?
There are 658 Addiction Medicine (Psychiatry & Neurology) Physician providers across 49 states in the US. The average Addiction Medicine (Psychiatry & Neurology) Physician provider writes 1,019 Medicare Part D claims per year.
What drugs does WILLIAM BUCKNAM, MD prescribe most often?
Based on 2023 Medicare Part D data, WILLIAM BUCKNAM, MD's most frequently prescribed drugs include Gabapentin, Desvenlafaxine Succinate Er, Clonazepam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does WILLIAM BUCKNAM, MD accept Medicare?
WILLIAM BUCKNAM, MD appears in CMS Medicare data with 1,434 Part D claims and 52 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify WILLIAM BUCKNAM, MD's credentials?
WILLIAM BUCKNAM, MD's NPI is 1548206360 with credentials MD. 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