Megan Houlahan, AGNP
Nurse Practitioner (CMS) · Clayton, MO
At a glance
401 Corporate Park Dr, Clayton, MO 63105-4201
NPPES record updated Jul 10, 2025. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
401 Corporate Park DrClayton, MO 63105-4201
Additional reported practice locations
3655 Vista AveSaint Louis, MO 631102539
Phone: 3142687700 10 Hospital Dr Fl 3
Saint Peters, MO 633761659
Phone: 6362884149 11160 Village North Dr
Jennings, MO 631366159
Phone: 6362884149 998 Woods Mill Rd
Ballwin, MO 630115101
Phone: 6362884149 5400 Executive Centre Pkwy
Saint Peters, MO 633762594
Phone: 6362884149 4455 Duncan Ave
Saint Louis, MO 631101111
Phone: 6362884149
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 2015
- CMS specialties
- Nurse Practitioner
Practice groups
Reported hospital affiliations
- Barnes-Jewish St Peters Hospital Saint Peters, MO
- Ssm Health Depaul Hospital St Louis Bridgeton, MO
- Ssm St Joseph Hospital West Lake Saint Louis, MO
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
No matching general-payment summary in the imported release. This is not a verified zero and does not rule out other payment types or years.
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Nurse Practitioner (CMS)
- Taxonomy code
- 363LA2200X
- Enumeration date
- Oct 27, 2015
- Record updated
- Jul 10, 2025
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- AGNP
Reported taxonomies and licenses
363LG0600X
License reported: 2015038454 MO
363LA2200X · Primary
License reported: 2015038454 MO
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
401 Corporate Park DrClayton, MO 63105-4201
- Phone
- (636) 288-4149
Mailing address
2025 ZUMBEHL ROADPMB 49
ST. CHARLES, MO 633032723
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
Report a directory issue