Matthew Knowlton, ARNP
NPI 1619476645 · Acute Care Nurse Practitioner · Clearwater, FL
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Knowlton, ARNP is a Acute Care Nurse Practitioner provider in Clearwater, FL (NPI 1619476645).
Provider details
- NPI number
- 1619476645
- Entity type
- Individual
- Primary specialty
- Acute Care Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- ARNP
- Sex
- Male
- Sole proprietor
- No
- License
- ARNP9309125 (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 tenure28% of score
8 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
3,037 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) |
|---|---|---|
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 1,378 | $61 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 1,271 | $89 |
| Initial Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, 50 Minutes Or More99306 | 287 | $151 |
| Initial Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 35 Minutes99305 | 101 | $110 |
Typical Medicare-allowed amounts for these services range $61–$151 (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 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 253 | 35 |
| Morphine Sulfatebrand: Morphine Sulfate Er | 116 | — |
| Tramadol Hcl | 70 | 17 |
| Oxycodone Hcl | 65 | 29 |
| Oxycodone Myristatebrand: Xtampza Er | 53 | — |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 38 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-02-05
- Last updated
- 2022-02-10
Frequently asked questions
- What is Matthew Knowlton's NPI number?
- Matthew Knowlton's National Provider Identifier (NPI) is 1619476645, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Knowlton's specialty?
- Matthew Knowlton is listed in the NPPES registry with a primary specialty of Acute Care Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Matthew Knowlton located?
- Matthew Knowlton's practice location on file with NPPES is 1011 Jeffords St Bldg C, Clearwater, FL 33756-4070.
- What is Matthew Knowlton's phone number?
- The practice phone number listed in the NPPES registry for Matthew Knowlton is (727) 446-5993.
- Does Matthew Knowlton accept Medicare?
- Matthew Knowlton is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Knowlton's NPI active?
- Yes — Matthew Knowlton's NPI (1619476645) is active in the NPPES registry as of the last update on 2022-02-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.