MS. PATRICIA A MAHATHATH PMHNP, FNP
NPI 1790189272
Nurse Practitioner - Psychiatric/Mental Health in Troy, MO
About Ms. Patricia A Mahathath Pmhnp, Fnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. PATRICIA A MAHATHATH PMHNP, FNP (NPI 1790189272) is an individual psychiatric/mental health provider in Troy, Missouri, licensed in Missouri (2023153247) and active in the NPI registry since October 2014. She is enrolled in Medicare PECOS, is affiliated with Mercy Hospital Perry, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Secondary Practice Locations 2
Other Identifiers 2
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
Ms. Patricia A Mahathath Pmhnp, Fnp 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
6Medicare enrollment records show Patricia Mahathath reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Troy, MO 63379
- Reassigned Medicare billing, Missouri enrollment
- 229 clinicians in this Medicare group
Wentzville, MO 63385
- Reassigned Medicare billing, Missouri enrollment
- 741 clinicians in this Medicare group
Alton, IL 62002
- Reassigned Medicare billing, Missouri enrollment
- 343 clinicians in this Medicare group
Festus, MO 63028
- Reassigned Medicare billing, Missouri enrollment
- 32 clinicians in this Medicare group
Perryville, MO 63775
- Reassigned Medicare billing, Missouri enrollment
- 192 clinicians in this Medicare group
Chattanooga, TN 37403
- Reassigned Medicare billing, Missouri enrollment
- Medicare enrollment name: Southeastern Emergency Services Of Memphis PC
- 89 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 3
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Hospital Perry
Critical Access Hospitals · Perryville, MOMercy Hospital Lincoln
Critical Access Hospitals · Troy, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63379 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
TROY, MO 63379
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 Patricia Mahathath's NPI number?
The NPI number for Patricia Mahathath is 1790189272. It was assigned to this individual provider in the NPPES registry on October 13, 2014. The provider is also known as Patricia A. Whaley Pmhnp, Fnp.
Where is Patricia Mahathath located?
Patricia Mahathath practices at 1000 E Cherry St, Troy, MO 63379. The listed phone number is (636) 528-8551.
What is Patricia Mahathath's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.
Is Patricia Mahathath enrolled in Medicare?
Yes. Patricia Mahathath 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 Patricia Mahathath's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Patricia Mahathath reassigns Medicare benefits to 6 organizations: Mercy Hospital Lincoln (Troy, MO), Ssm Health Care St. Louis (Wentzville, MO), Southeastern Emergency Physicians Of Memphis LLC (Alton, IL), Mercy Clinic Adult Psychiatry, LLC (Festus, MO), Mercy Hospital Perry (Perryville, MO) and 1 more organization, listed in the Medicare section above. 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 Patricia Mahathath's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Patricia Mahathath 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 5 other insurers list Patricia Mahathath 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 Patricia Mahathath affiliated with any hospitals?
According to CMS data, Patricia Mahathath is affiliated with Mercy Hospital Perry and Mercy Hospital Lincoln.
When was this NPI record last updated?
The NPPES record for Patricia Mahathath was last updated on August 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Ms. Patricia A Mahathath, PMHNP, FNP · NPI 1790189272
Psychiatric/Mental Health physician in Troy, Missouri. Individual provider, active in the CMS NPPES registry since October 13, 2014.
## Identity
- **NPI:** 1790189272 (Entity type: Individual)
- **Enumerated:** October 13, 2014
- **Primary specialty:** Nurse Practitioner - Psychiatric/Mental Health · taxonomy 363LP0808X
- **State license:** 2023153247 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 1000 E CHERRY ST, Troy, MO 63379-1513
- **Phone:** (636) 528-8551
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Mercy Hospital Lincoln (NPI 1962808733, Troy, MO); Ssm Health Care St. Louis (NPI 1588618755, Wentzville, MO); Southeastern Emergency Physicians Of Memphis LLC (NPI 1437105277, Alton, IL); Mercy Clinic Adult Psychiatry, LLC (NPI 1750788972, Festus, MO); Mercy Hospital Perry (NPI 1720767940, Perryville, MO); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** August 29, 2025
- **Other identifiers:** Medicaid ENROLLED (IL); Medicaid 1790189272 (MO)
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Source: [NPI Profile](https://npiprofile.com/npi/1790189272) · Data from the CMS NPPES public registry.