David Castellanos, PAC
NPI 1295375798 · Medical Physician Assistant · Madison, WI
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Castellanos, PAC is a Medical Physician Assistant provider in Madison, WI (NPI 1295375798).
Provider details
- NPI number
- 1295375798
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PAC
- Sex
- Male
- Sole proprietor
- No
- License
- 4822-23 (WI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
6 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,000 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 467 | $13 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 393 | $52 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 82 | $76 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 46 | $28 |
| Destruction of Skin Growth, 1-14 Growths17110 | 12 | $55 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 40 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 87 | 36 |
| Amlodipine Besylate | 76 | 29 |
| Lisinopril | 69 | 32 |
| Levothyroxine Sodium | 53 | 22 |
| Losartan Potassium | 49 | 18 |
| Omeprazole | 44 | 18 |
| Gabapentin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-01-13
- Last updated
- 2022-03-02
- Certified
- 2022-03-02
Frequently asked questions
- What is David Castellanos's NPI number?
- David Castellanos's National Provider Identifier (NPI) is 1295375798, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Castellanos's specialty?
- David Castellanos is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is David Castellanos located?
- David Castellanos's practice location on file with NPPES is 451 Junction Rd, Madison, WI 53717-2656.
- What is David Castellanos's phone number?
- The practice phone number listed in the NPPES registry for David Castellanos is (608) 265-1600.
- Does David Castellanos accept Medicare?
- David Castellanos is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Castellanos's NPI active?
- Yes — David Castellanos's NPI (1295375798) is active in the NPPES registry as of the last update on 2022-03-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.