Megan Onder, FNP-C
NPI 1821540311 · Family Nurse Practitioner · Saint Louis, MO
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Megan Onder, FNP-C is a Family Nurse Practitioner provider in Saint Louis, MO (NPI 1821540311).
Provider details
- NPI number
- 1821540311
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-C
- Sex
- Female
- Sole proprietor
- No
- License
- 2016028420 (MO)
Specialties & taxonomies
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
9 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
384 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 201 | $78 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 70 | $109 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 43 | $95 |
| Exam of Ear Using a Microscope92504 | 23 | $24 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 18 | $138 |
| Test to Assess Middle Ear Function92567 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methylprednisolone | 55 | 54 |
| Mupirocin | 33 | 32 |
| Ofloxacin | 30 | 27 |
| Azelastine Hcl | 29 | 14 |
| Fluocinolone Acetonide Oil | 29 | 25 |
| Ipratropium Bromide | 24 | 15 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 19 | 19 |
| Ciprofloxacin Hcl/Dexameth |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$18 across 1 record (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 (1)
- 1010 Old Des Peres RdSaint Louis, MO 63131-1865Phone: (314) 729-0077
Registry dates
- Enumerated
- 2016-10-31
- Last updated
- 2022-10-05
- Certified
- 2022-10-05
Frequently asked questions
- What is Megan Onder's NPI number?
- Megan Onder's National Provider Identifier (NPI) is 1821540311, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Megan Onder's specialty?
- Megan Onder is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Megan Onder located?
- Megan Onder's practice location on file with NPPES is 9701 Landmark Parkway Dr Ste 201, Saint Louis, MO 63127-1665.
- What is Megan Onder's phone number?
- The practice phone number listed in the NPPES registry for Megan Onder is (314) 843-3828.
- Does Megan Onder accept Medicare?
- Megan Onder is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Megan Onder's NPI active?
- Yes — Megan Onder's NPI (1821540311) is active in the NPPES registry as of the last update on 2022-10-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.