David William Castellanos, PAC

Medical Physician Assistant

David William Castellanos is a Medical Physician Assistant based in Madison, WI with over 7 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.

(608) 265-1600Madison, WI
Telehealth Available
NPI Active per CMS — Q2 2026|Medicare Enrolled|Order & Refer

Patients across WI can see David William Castellanos, PAC in person in Madison or via virtual visit — no travel required. He has been practicing since 2020 — over 7 years. CMS Medicare data shows his patients commonly have hypertension, high cholesterol, and arthritis.

At a glance

  • Prescribes opioids less than 43% of reporting doctors in Wisconsin
  • Uses generic medications more than 39% of reporting doctors in Wisconsin
  • Virtual visits available — no app or travel required
1 of 119 Physician Assistant providers in WISee all Physician Assistant in Madison7+ years experienceNPI since 2020

Older · 1546dNPPES updated 2022-03-02 · verify NPI on CMS · Verify license at Wisconsin Medical Examining Board

Contact & Location

Practice Location

451 Junction Rd, Madison, WI 53717-2656

CMS Clinical Data

How Does This Doctor Compare?

Based on Medicare data, this doctor prescribes opioid pain medications conservatively, favors affordable generic drugs over brand-name ones.

Opioid Rx

↓ Lower = better

1.67%

Wisconsin avg: 4.3 · US avg: 5.1

Higher than most doctors nationally(-3.4 pts)

Typical range among reporting doctors in Wisconsin

1.67% of this doctor's prescriptions are opioid pain medications. Lower means more cautious prescribing.

Generic Rx

↑ Higher = better

85.9%

Wisconsin avg: 82.2 · US avg: 82.8

Higher than most doctors nationally(+3.1 pts)

How often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.

Medicare Patients

373

Unique beneficiaries

Standard volume

Prescription Recipients

327

Patients prescribed

Prescriptions Written

1,197

Total claims

Total Medicare drug cost: $142k

Percentile rankings compared against 779 reporting peers in Wisconsin.

Data Note: Sourced from CMS Medicare Provider Utilization & Payment Data. Percentile rankings compare this provider against all peers with reported data in the same state. Updated annually to reflect the latest federal reporting cycle.

Patient Condition Panel

What This Doctor Treats Most

Based on Medicare claims data — here's what patients commonly see this doctor for

Based on Medicare data, this doctor primarily manages Hypertension, High Cholesterol, and Arthritis.

Hypertension
Lower than avg (-8%)62%

High blood pressure — a leading risk factor for heart disease and stroke

US avg: 70.2%

↓ Fewer patients than average (-8%) — less common here

High Cholesterol
Lower than avg (-12%)58%

Elevated cholesterol or triglycerides that increase heart disease risk

US avg: 70.4%

↓ Fewer patients than average (-12%) — less common here

Arthritis
Lower than avg (-3%)46%

Joint inflammation causing pain, swelling, and stiffness

US avg: 49.3%

↓ Fewer patients than average (-3%) — less common here

Mood Disorders
25%

Conditions affecting emotional state, including depression and bipolar disorder

Diabetes
Lower than avg (-12%)22%

A condition where the body cannot properly regulate blood sugar levels

US avg: 34.5%

↓ Fewer patients than average (-12%) — less common here

Anxiety Disorders
Lower than avg (-12%)22%

Excessive worry or fear that interferes with daily life

US avg: 34.1%

↓ Fewer patients than average (-12%) — less common here

Depression
Lower than avg (-11%)21%

A mood disorder causing persistent sadness and loss of interest in activities

US avg: 31.8%

↓ Fewer patients than average (-11%) — less common here

Osteoporosis
Higher than avg (+2%)20%

Weakened bones that are more prone to fractures, common in older adults

US avg: 18.1%

↑ More patients than average (+2%) — a focus area for this doctor

GeneralBehavioralNational avg

Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.

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Background & Specialty

Education, training, and specialty classification from CMS NPPES and Medicare records.

Career Journey
  1. Board certified · Mar 1, 2022

    Self-reported via NPPES

  2. 7 years in practice

    Established

Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers

Definition to come...

Taxonomy: 363AM0700X

Practice Footprint

Mailing address

7974 Uw Health Ct, Middleton, WI 53562-5531

Differs from practice location

Virtual Medical Care With David William Castellanos

NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.

Schedule a virtual visit with David William Castellanos for blood pressure monitoring, cholesterol management, arthritis follow-ups — no travel to Madison required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.

Frequently Asked Questions

Common questions about David William Castellanos

NPI records show Dr. Castellanos as active with telehealth listed in Madison, WI. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (608) 265-1600.

Verified across 4 federal data sources

Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Physician Comparator. See Data Methodology.

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Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.

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