Katherine Mattern, PA
NPI 1417148743 · Physician Assistant · Merritt Island, FL
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Mattern, PA is a Physician Assistant provider in Merritt Island, FL (NPI 1417148743).
Provider details
- NPI number
- 1417148743
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Female
- Sole proprietor
- No
- License
- PA9106262 (FL)
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
18 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
574 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 238 | $75 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 157 | $66 |
| Aspiration And/Or Injection of Fluid Large Joint Using Ultrasound Guidance20611 | 45 | $92 |
| X-Ray of Knee, 1-2 Views73560 | 30 | $29 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 30 | $93 |
| X-Ray of Shoulder, Minimum of 2 Views73030 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$16 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
- 2007-08-01
- Last updated
- 2021-04-29
- Certified
- 2021-04-29
Frequently asked questions
- What is Katherine Mattern's NPI number?
- Katherine Mattern's National Provider Identifier (NPI) is 1417148743, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Mattern's specialty?
- Katherine Mattern is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Katherine Mattern located?
- Katherine Mattern's practice location on file with NPPES is 650 S Courtenay Pkwy, Merritt Island, FL 32952-4977.
- What is Katherine Mattern's phone number?
- The practice phone number listed in the NPPES registry for Katherine Mattern is (321) 394-2660.
- Does Katherine Mattern accept Medicare?
- Katherine Mattern is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Mattern's NPI active?
- Yes — Katherine Mattern's NPI (1417148743) is active in the NPPES registry as of the last update on 2021-04-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.