Marijen Aga, NP
NPI 1245575547 · Psychiatric/Mental Health Nurse Practitioner · Shawnee, KS
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marijen Aga, NP is a Psychiatric/Mental Health Nurse Practitioner provider in Shawnee, KS (NPI 1245575547).
Provider details
- NPI number
- 1245575547
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 2015036177 (MO)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
161 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 98 | $77 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 63 | $11 |
Typical Medicare-allowed amounts for these services range $11–$77 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 61 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Quetiapine Fumarate | 273 | 30 |
| Trazodone Hcl | 234 | 38 |
| Sertraline Hcl | 201 | 20 |
| Divalproex Sodiumbrand: Divalproex Sodium Er | 156 | 15 |
| Olanzapine | 136 | 16 |
| Lamotrigine | 135 | 16 |
| Escitalopram Oxalate | 113 | 13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,302 across 194 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (3)
- 301 E Kansas StLansing, KS 66043-1619Phone: (913) 727-3235
- 20333 W 151st StOlathe, KS 66061-5350Phone: (913) 588-1227
- 3515 Broadway BlvdKansas City, MO 64111-2501Phone: (816) 753-5144Fax: (816) 753-0804
Registry dates
- Enumerated
- 2012-11-28
- Last updated
- 2026-02-16
- Certified
- 2026-02-16
Frequently asked questions
- What is Marijen Aga's NPI number?
- Marijen Aga's National Provider Identifier (NPI) is 1245575547, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marijen Aga's specialty?
- Marijen Aga is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Marijen Aga located?
- Marijen Aga's practice location on file with NPPES is 6440 Nieman Rd, Shawnee, KS 66203-3326.
- What is Marijen Aga's phone number?
- The practice phone number listed in the NPPES registry for Marijen Aga is (913) 826-4200.
- Does Marijen Aga accept Medicare?
- Marijen Aga is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marijen Aga's NPI active?
- Yes — Marijen Aga's NPI (1245575547) is active in the NPPES registry as of the last update on 2026-02-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.