Rachael Mergenmeier, D.O.
NPI 1518957265 · Family Medicine Physician · Saint Peters, MO
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rachael Mergenmeier, D.O. is a Family Medicine Physician provider in Saint Peters, MO (NPI 1518957265).
Provider details
- NPI number
- 1518957265
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- 34007396 (OH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$316 across 6 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
Registry dates
- Enumerated
- 2005-10-25
- Last updated
- 2025-08-11
- Certified
- 2025-08-11
Frequently asked questions
- What is Rachael Mergenmeier's NPI number?
- Rachael Mergenmeier's National Provider Identifier (NPI) is 1518957265, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rachael Mergenmeier's specialty?
- Rachael Mergenmeier is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Rachael Mergenmeier located?
- Rachael Mergenmeier's practice location on file with NPPES is 107 Piper Hill Dr, Saint Peters, MO 63376-1651.
- What is Rachael Mergenmeier's phone number?
- The practice phone number listed in the NPPES registry for Rachael Mergenmeier is (636) 939-3648.
- Does Rachael Mergenmeier accept Medicare?
- Rachael Mergenmeier is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rachael Mergenmeier's NPI active?
- Yes — Rachael Mergenmeier's NPI (1518957265) is active in the NPPES registry as of the last update on 2025-08-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.