Matthew Keen, FNP-C
NPI 1689124414 · Family Nurse Practitioner · Saint Louis, MO
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Keen, FNP-C is a Family Nurse Practitioner provider in Saint Louis, MO (NPI 1689124414).
Provider details
- NPI number
- 1689124414
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-C
- Sex
- Male
- Sole proprietor
- No
- License
- 2016035658 (MO)
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
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
124 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) |
|---|---|---|
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 52 | $99 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 21 | $145 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 19 | $74 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 17 | $91 |
| Detection Test By Immunoassay With Direct Visual Observation for Severe Acute Respiratory Syndrome Coronavirus 2 (covid-19)87811 | 15 | $41 |
Typical Medicare-allowed amounts for these services range $41–$145 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 |
|---|---|---|
| Prednisone | 54 | 53 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 31 | 31 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 30 | 29 |
| Cephalexin | 24 | 24 |
| Naproxen | 18 | 18 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 17 | 17 |
Practice location
Mailing address
Additional practice locations (1)
- 10010 Kennerly RdSaint Louis, MO 63128-2106Phone: (314) 525-1906
Registry dates
- Enumerated
- 2016-10-05
- Last updated
- 2026-06-03
- Certified
- 2026-06-03
Frequently asked questions
- What is Matthew Keen's NPI number?
- Matthew Keen's National Provider Identifier (NPI) is 1689124414, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Keen's specialty?
- Matthew Keen is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Matthew Keen located?
- Matthew Keen's practice location on file with NPPES is 12700 Southfork Rd Ste 280, Saint Louis, MO 63128-3287.
- What is Matthew Keen's phone number?
- The practice phone number listed in the NPPES registry for Matthew Keen is (314) 892-6565.
- Does Matthew Keen accept Medicare?
- Matthew Keen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Keen's NPI active?
- Yes — Matthew Keen's NPI (1689124414) is active in the NPPES registry as of the last update on 2026-06-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.