Korey Zellner, PA-C
NPI 1699921015 · Physician Assistant · Madison, WI
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Korey Zellner, PA-C is a Physician Assistant provider in Madison, WI (NPI 1699921015).
Provider details
- NPI number
- 1699921015
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
- License
- 2323 (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 tenure25% of score
17 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
56 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 23 | $9 |
| Harvest of Vein Using an Endoscope33508 | 19 | $2 |
| Coronary Artery Bypass Using Artery Graft, 1 Graft33533 | 14 | $203 |
Typical Medicare-allowed amounts for these services range $2–$203 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Tartrate | 46 | 29 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 42 | 22 |
| Amlodipine Besylate | 38 | 24 |
| Tramadol Hcl | 36 | 36 |
| Pantoprazole Sodium | 33 | 25 |
| Furosemide | 28 | 26 |
| Warfarin Sodium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$136 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-08-18
- Last updated
- 2020-12-23
- Certified
- 2020-12-23
Frequently asked questions
- What is Korey Zellner's NPI number?
- Korey Zellner's National Provider Identifier (NPI) is 1699921015, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Korey Zellner's specialty?
- Korey Zellner is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Korey Zellner located?
- Korey Zellner's practice location on file with NPPES is 700 S Park St Ste a, Madison, WI 53715-1830.
- What is Korey Zellner's phone number?
- The practice phone number listed in the NPPES registry for Korey Zellner is (608) 260-2900.
- Does Korey Zellner accept Medicare?
- Korey Zellner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Korey Zellner's NPI active?
- Yes — Korey Zellner's NPI (1699921015) is active in the NPPES registry as of the last update on 2020-12-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.