Allyse Marie Ortega, FNP-C, AGACNP, RN - Medicare Nurse Practitioner in O Fallon, MO

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Allyse Marie Ortega, FNP-C, AGACNP, RN is a medicare enrolled "Nurse Practitioner - Family" in O Fallon, Missouri. She graduated from nursing school in 2021 and has 5 years of diverse experience with area of expertise as Nurse Practitioner. She is a member of the group practice Total Access Urgent Care Pc and her current practice location is 844 Waterbury Falls Dr Ste B, O Fallon, Missouri. You can reach out to her office (for appointments etc.) via phone at (636) 385-5556.

Allyse Marie Ortega is licensed to practice in Missouri (license number 2017001487) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1982149878.

Contact Information

Allyse Marie Ortega, FNP-C, AGACNP, RN
844 Waterbury Falls Dr Ste B,
O Fallon, MO 63368-2208
(636) 385-5556
(636) 614-2093

Map and Direction




Provider's Profile

Full NameAllyse Marie Ortega
GenderFemale
SpecialityNurse Practitioner
Experience5 Years
Location844 Waterbury Falls Dr Ste B, O Fallon, Missouri
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Allyse Marie Ortega graduated from nursing school in 2021
  NPI Data:
  • NPI Number: 1982149878
  • Provider Enumeration Date: 12/30/2016
  • Last Update Date: 01/27/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 4486930732
  • Enrollment ID: I20170420002571

Medical Identifiers

Medical identifiers for Allyse Marie Ortega such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1982149878NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363LF0000XNurse Practitioner - Family 2017001487 (Missouri)Primary
163WE0003XRegistered Nurse - Emergency 2010020396 (Missouri)Secondary
363LA2100XNurse Practitioner - Acute Care 2023000801 (Missouri)Secondary

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Allyse Marie Ortega allows following entities to bill medicare on her behalf.
Entity NameTotal Access Urgent Care Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1962684886
PECOS PAC ID: 8820171929
Enrollment ID: O20080213000227
Entity NameSouth St Louis Medical Associates Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1750681151
PECOS PAC ID: 1153510888
Enrollment ID: O20110112000376
Entity NameCep America Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1619332046
PECOS PAC ID: 6608056171
Enrollment ID: O20150312000325
Entity NameMercy East Ambulatory Services Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1134673148
PECOS PAC ID: 2365739240
Enrollment ID: O20160920002054
Entity NameComplete Infusion Solutions Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1386372514
PECOS PAC ID: 8921474875
Enrollment ID: O20221018000245

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Allyse Marie Ortega is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Allyse Marie Ortega, FNP-C, AGACNP, RN
844 Waterbury Falls Dr Ste B,
O Fallon, MO 63368-2208

Ph: (636) 385-5556		Allyse Marie Ortega, FNP-C, AGACNP, RN
844 Waterbury Falls Dr Ste B,
O Fallon, MO 63368-2208

Ph: (636) 385-5556

Reviews and Comments


Nurse Practitioner Nurses in O Fallon, MO

Mrs. Shannon M Wood, FNP-BC
Nurse Practitioner
Medicare: Not Enrolled in Medicare
Practice Location: 9209 Phoenix Village Pkwy, O Fallon, MO 63368
Phone: 636-561-4613    Fax: 636-561-4610
Leah W Wangui, FNP
Nurse Practitioner
Medicare: Not Enrolled in Medicare
Practice Location: 225 Mystic Cv, O Fallon, MO 63368
Phone: 314-583-4665    
Mrs. Dawn Marie Johns,
Nurse Practitioner
Medicare: Accepting Medicare Assignments
Practice Location: 920 N Main St, O Fallon, MO 63366
Phone: 314-687-2731    
Brooke Lauren Meyer, RN, MSN, CPNP
Nurse Practitioner
Medicare: Medicare Enrolled
Practice Location: 300 Winding Woods Dr Ste 101, O Fallon, MO 63366
Phone: 636-978-7902    
Mrs. Christina Marie Ivy, FNP-C
Nurse Practitioner
Medicare: Medicare Enrolled
Practice Location: 2765 Red Cedar Parc Dr S, O Fallon, MO 63368
Phone: 636-248-8072    
Elizabeth Vollmar, FNP-C
Nurse Practitioner
Medicare: Accepting Medicare Assignments
Practice Location: 1101 Highway K, O Fallon, MO 63366
Phone: 636-379-6363    
Ngozi Theresa Ufochukwu, NP
Nurse Practitioner
Medicare: Not Enrolled in Medicare
Practice Location: 465 Dusty Brook Dr, O Fallon, MO 63366
Phone: 314-489-9411    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.