Mallory Layman, FNP
NPI 1558959429 · Family Nurse Practitioner · Ionia, MI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mallory Layman, FNP is a Family Nurse Practitioner provider in Ionia, MI (NPI 1558959429).
Provider details
- NPI number
- 1558959429
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 4704329733 (MI)
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 tenure33% of score
5 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 54 | 50 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 20 | 20 |
| Azithromycin | 20 | 19 |
| Cephalexin | 18 | 18 |
| Cefuroxime Axetilbrand: Cefuroxime | 13 | 12 |
| Rosuvastatin Calcium | 12 | — |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 11 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$125 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
Registry dates
- Enumerated
- 2021-01-06
- Last updated
- 2026-05-21
- Certified
- 2026-05-21
Frequently asked questions
- What is Mallory Layman's NPI number?
- Mallory Layman's National Provider Identifier (NPI) is 1558959429, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mallory Layman's specialty?
- Mallory Layman is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mallory Layman located?
- Mallory Layman's practice location on file with NPPES is 2776 S State Rd, Ionia, MI 48846-8472.
- What is Mallory Layman's phone number?
- The practice phone number listed in the NPPES registry for Mallory Layman is (616) 775-7500.
- Does Mallory Layman accept Medicare?
- Mallory Layman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mallory Layman's NPI active?
- Yes — Mallory Layman's NPI (1558959429) is active in the NPPES registry as of the last update on 2026-05-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.