MEGAN HOULAHAN AGNP
NPI 1972975183
Nurse Practitioner - Adult Health in Clayton, MO
About Megan Houlahan Agnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MEGAN HOULAHAN AGNP (NPI 1972975183) is an individual adult health provider in Clayton, Missouri, licensed in Missouri (2015038454) and active in the NPI registry since October 2015. She is enrolled in Medicare PECOS, is affiliated with Ssm Health Depaul Hospital St Louis, and maintains 6 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 6
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Megan Houlahan Agnp is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
4Medicare enrollment records show Megan Houlahan reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Clayton, MO 63105
- Reassigned Medicare billing, Missouri enrollment
- 18 clinicians in this Medicare group
Saint Louis, MO 63110
- Reassigned Medicare billing, Missouri enrollment
- 194 clinicians in this Medicare group
Saint Louis, MO 63104
- Reassigned Medicare billing, Missouri enrollment
- 1,294 clinicians in this Medicare group
Fenton, MO 63026
- Reassigned Medicare billing, Missouri enrollment
- 697 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ssm Health Depaul Hospital St Louis
Acute Care Hospitals · Bridgeton, MOBarnes-Jewish St Peters Hospital
Acute Care Hospitals · Saint Peters, MOSsm St Joseph Hospital West
Acute Care Hospitals · Lake Saint Louis, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63105 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Megan Houlahan's NPI number?
The NPI number for Megan Houlahan is 1972975183. It was assigned to this individual provider in the NPPES registry on October 27, 2015.
Where is Megan Houlahan located?
Megan Houlahan practices at 401 Corporate Park Dr, Clayton, MO 63105. The listed phone number is (636) 288-4149.
What is Megan Houlahan's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.
Is Megan Houlahan enrolled in Medicare?
Yes. Megan Houlahan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Megan Houlahan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Megan Houlahan reassigns Medicare benefits to 4 organizations: Med Clinical Practice LLC (Clayton, MO), Slh Physicians LLC (Saint Louis, MO), Ssm Health Care Group (Saint Louis, MO) and Ssm Medical Group, Inc. (Fenton, MO). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Megan Houlahan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Megan Houlahan accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan and Ambetter of Oklahoma and 3 other insurers list Megan Houlahan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Megan Houlahan affiliated with any hospitals?
According to CMS data, Megan Houlahan is affiliated with Ssm Health Depaul Hospital St Louis, Barnes-Jewish St Peters Hospital and Ssm St Joseph Hospital West.
When was this NPI record last updated?
The NPPES record for Megan Houlahan was last updated on July 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Megan Houlahan, AGNP · NPI 1972975183
Adult Health physician in Clayton, Missouri. Individual provider, active in the CMS NPPES registry since October 27, 2015.
## Identity
- **NPI:** 1972975183 (Entity type: Individual)
- **Enumerated:** October 27, 2015
- **Primary specialty:** Nurse Practitioner - Adult Health · taxonomy 363LA2200X
- **State license:** 2015038454 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 401 CORPORATE PARK DR, Clayton, MO 63105-4201
- **Phone:** (636) 288-4149
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Med Clinical Practice LLC (NPI 1699516690, Clayton, MO); Slh Physicians LLC (NPI 1881668051, Saint Louis, MO); Ssm Health Care Group (NPI 1306589544, Saint Louis, MO); Ssm Medical Group, Inc. (NPI 1700966207, Fenton, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2015
## Record status
- **NPPES last updated:** July 10, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1972975183) · Data from the CMS NPPES public registry.