Matthew Karlen, MD
NPI 1144279035 · Diagnostic Radiology Physician · Clearwater, FL
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Karlen, MD is a Diagnostic Radiology Physician provider in Clearwater, FL (NPI 1144279035).
Provider details
- NPI number
- 1144279035
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- ME109555 (FL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 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
4,442 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) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 1,660 | $8 |
| X-Ray of Abdomen, 1 View74018 | 352 | $8 |
| Screening Mammography77067 | 197 | $35 |
| Screening 3d Breast Mammography77063 | 196 | $27 |
| X-Ray of Chest, 2 Views71046 | 144 | $10 |
| Ultrasound of Both Sides of Head and Neck Blood Flow93880 | 133 | $37 |
| Complete Ultrasound Scan Behind Abdominal Cavity |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-08
- Last updated
- 2026-04-22
- Certified
- 2026-04-22
Frequently asked questions
- What is Matthew Karlen's NPI number?
- Matthew Karlen's National Provider Identifier (NPI) is 1144279035, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Karlen's specialty?
- Matthew Karlen is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Karlen located?
- Matthew Karlen's practice location on file with NPPES is 2337 Bluewater Way, Clearwater, FL 33759-1076.
- What is Matthew Karlen's phone number?
- The practice phone number listed in the NPPES registry for Matthew Karlen is (614) 570-0171.
- Does Matthew Karlen accept Medicare?
- Matthew Karlen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Karlen's NPI active?
- Yes — Matthew Karlen's NPI (1144279035) is active in the NPPES registry as of the last update on 2026-04-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.