2026 NPPES data Psychiatry Physician NPI 1255368346 M.D.
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RANDALL CULLEN, M.D.

Psychiatry 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
567
Medicare Part D claims · 47 beneficiaries · Psychiatry Physician avg: 1K
Generic prescribing
83%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: RANDALL CULLEN, M.D. is a Psychiatry Physician ([object Object]) practicing in MADISON, Wisconsin with a Medicare Part D prescribing footprint of 567 claims across 47 beneficiaries — 17% brand-name prescribing .

What the federal data shows

RANDALL CULLEN, M.D. filed 567 Medicare Part D claims in 2023 as a Psychiatry Physician in MADISON, Wisconsin, prescribing 83% generic.

567
Part D claims, 2023
83%
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.

Board-eligible specialty (heuristic — not verified)

RANDALL CULLEN, 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).

RANDALL CULLEN, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 06/26/2006

NPI 1255368346

Primary specialty

Psychiatry Physician

High-volume

53,104 US NPIs in this specialty

Medicare Part D claims

567 45% vs specialty avg

2023 prescription claims

Specialty avg: 1,038

Specialty distribution in Wisconsin

How Psychiatry Physician compares to other specialties among Wisconsin providers

Wisconsin providers

Psychiatry Physician share within Wisconsin

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

Specialty board-certification context

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

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

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

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

RANDALL CULLEN, M.D. is a Psychiatry Physician provider practicing in MADISON, Wisconsin, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1255368346. 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.

RANDALL CULLEN, M.D. appears in the CMS NPPES registry as a Psychiatry Physician provider holding M.D. credentials at 6333 ODANA RD STE 20, MADISON, WI, 53719, with a listed phone of (608) 212-4822. NPI 1255368346 was issued on 06/26/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CULLEN 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 567 prescription claims written by this provider, covering 47 Medicare beneficiaries and totaling roughly $255K in drug spend, split 17% brand-name and 83% 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.

Psychiatry Physician is a high-volume specialty nationwide, with 53,104 enrolled providers across 56 states and an average of 1,038 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

6333 ODANA RD STE 20
MADISON, WI 53719

Provider Details

NPI 1255368346
Specialty Psychiatry Physician
Credentials M.D.
Gender Male
NPI Issued 06/26/2006

Brand vs generic prescribing mix · Typical

RANDALL CULLEN, M.D. — brand share 17.0%
Specialty average (est.)

17% brand-name claims vs 83% generic, on 567 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.

567
Total Claims
$255K
Total Drug Cost
47
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
614
Total Day Supply
16,272
Brand vs Generic
17% brand / 83% generic
Brand Drug Cost
$217K
Generic Drug Cost
$37K

Patient Demographics

Average Patient Age
54.4 years
Avg HCC Risk Score
1.26
Gender Split
53% female / 47% 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
Clonazepam
54
Clozapine
33
Quetiapine Fumarate
32
Risperidone
23
Trazodone Hcl
22
Gabapentin
21
Bupropion Xl
Bupropion Hcl
20
Lorazepam
18
Propranolol Hcl
17
Vraylar
Cariprazine Hcl
17

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

Psychiatry Physician Overview

How RANDALL CULLEN, M.D. fits within the Psychiatry Physician landscape nationally.

53,104
Psychiatry Physician Providers in US
56
States with Psychiatry Physician
1,038
Avg Claims per Provider

RANDALL CULLEN, M.D.'s 567 claims are below the specialty average of 1,038.

Nearby Psychiatry Physician Providers in Wisconsin

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

Compare Psychiatry Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is RANDALL CULLEN, M.D.'s specialty?
RANDALL CULLEN, M.D. specializes in Psychiatry Physician and practices in MADISON, Wisconsin. Credentials: M.D..
How much does RANDALL CULLEN, M.D. prescribe under Medicare Part D?
In 2023, RANDALL CULLEN, M.D. wrote 567 Medicare Part D claims totaling $255K in drug costs for 47 beneficiaries.
Where is RANDALL CULLEN, M.D. located?
RANDALL CULLEN, M.D. is located at 6333 ODANA RD STE 20, MADISON, WI, 53719. Phone: (608) 212-4822.
What is RANDALL CULLEN, M.D.'s NPI number?
RANDALL CULLEN, M.D.'s National Provider Identifier (NPI) is 1255368346, issued on 06/26/2006.
Does RANDALL CULLEN, M.D. prescribe more brand-name or generic drugs?
RANDALL CULLEN, M.D.'s prescribing is 17% brand-name and 83% generic drugs by claim count, with $217K in brand drug costs.
How many Psychiatry Physician providers are there in the US?
There are 53,104 Psychiatry Physician providers across 56 states in the US. The average Psychiatry Physician provider writes 1,038 Medicare Part D claims per year.
What drugs does RANDALL CULLEN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, RANDALL CULLEN, M.D.'s most frequently prescribed drugs include Clonazepam, Clozapine, Quetiapine Fumarate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does RANDALL CULLEN, M.D. accept Medicare?
RANDALL CULLEN, M.D. appears in CMS Medicare data with 567 Part D claims and 47 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify RANDALL CULLEN, M.D.'s credentials?
RANDALL CULLEN, M.D.'s NPI is 1255368346 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