Doctor profile · Federal record
Dr. Megan Williams, FNP-C
Family Nurse Practitioner (CMS: Nurse Practitioner) · Saint Charles, MO
- NPI 1598238925
- Accepts Medicare
- 8 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
711 Veterans Memorial Pkwy Ste 300
Saint Charles, MO 633032106
(636) 669-2350 - Additional location
-
1 Barnes Jewish Hospital Plz
Saint Louis, MO 631101003
(314) 368-9169 - Mailing address
-
Po Box 955534
Saint Louis, MO 631952551
Credentials & registration
- NPI registered
- January 2019 — 7 yrs on file
- Profile last updated
- October 28, 2020
- Year of graduation
- 2018 — 8 yrs since
- Specialty taxonomy
- 363LF0000X — NUCC code
- State license (1)
- Missouri #2019000530
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1598238925. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
535
Distinct HCPCS
4
Medicare allowed
$41,085
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 444 | 355 | $80 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 38 | 38 | $106 | |
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 29 | 29 | $7 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 24 | 23 | $55 |
In context: peer comparison
Among 11 peers in this city , average services per provider: 80. This provider delivers 6.7× the peer median.Open Payments
Industry payments received
All-time total
$15
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Exact Sciences Corporation | 1 | $14.79 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
853
Patients
727
Total drug cost
$7,214
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Methylprednisolone | Generic | 114 | 106 | $901 |
| Prednisone | Generic | 90 | 79 | $289 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 84 | 81 | $754 |
| Azithromycin | Generic | 71 | 69 | $275 |
| Atorvastatin Calcium | Generic | 57 | 35 | $548 |
| Amoxicillin | Generic | 55 | 53 | $138 |
| Tizanidine Hcl | Generic | 54 | 44 | $198 |
| Amlodipine Besylate | Generic | 53 | 31 | $253 |
| Nitrofurantoin Mono-Macro (Nitrofurantoin Monohyd/M-Cryst) | Brand | 53 | 51 | $793 |
| Doxycycline Hyclate | Generic | 48 | 43 | $730 |
Frequently asked questions
What is Dr. Megan Williams's medical specialty?
Dr. Megan Williams practices Family Nurse Practitioner in Saint Charles, MO.
Where does Dr. Megan Williams practice?
Dr. Megan Williams practices at 711 Veterans Memorial Pkwy Ste 300, Saint Charles, MO 633032106. Office phone: 6366692350.
What is Dr. Megan Williams's NPI?
Dr. Megan Williams's National Provider Identifier (NPI) is 1598238925, issued by NPPES.
Does Dr. Megan Williams accept Medicare assignment?
Yes. Dr. Megan Williams accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Megan Williams commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439); Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (HCPCS 93010). Source: CMS Medicare Physician & Other Practitioners file.