Cynthia Anthonies, FNP
NPI 1508384942 · Family Nurse Practitioner · Chesterfield, MO
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cynthia Anthonies, FNP is a Family Nurse Practitioner provider in Chesterfield, MO (NPI 1508384942).
Provider details
- NPI number
- 1508384942
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 20172025290 (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
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
109 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 76 | $54 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 33 | $67 |
Typical Medicare-allowed amounts for these services range $54–$67 (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 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 41 | 41 |
| Doxycycline Hyclate | 32 | 32 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 26 | 26 |
| Prednisone | 24 | 24 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 16 | 15 |
| Amoxicillin | 15 | 15 |
| Methylprednisolone |
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-09-06
- Last updated
- 2022-07-21
Frequently asked questions
- What is Cynthia Anthonies's NPI number?
- Cynthia Anthonies's National Provider Identifier (NPI) is 1508384942, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cynthia Anthonies's specialty?
- Cynthia Anthonies is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Cynthia Anthonies located?
- Cynthia Anthonies's practice location on file with NPPES is 232 S Woods Mill Rd, Chesterfield, MO 63017-3406.
- What is Cynthia Anthonies's phone number?
- The practice phone number listed in the NPPES registry for Cynthia Anthonies is (314) 205-6990.
- Does Cynthia Anthonies accept Medicare?
- Cynthia Anthonies is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cynthia Anthonies's NPI active?
- Yes — Cynthia Anthonies's NPI (1508384942) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.