Mallory Groff
NPI 1255961959 · Psychiatric/Mental Health Nurse Practitioner · Landenberg, PA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mallory Groff is a Psychiatric/Mental Health Nurse Practitioner provider in Landenberg, PA (NPI 1255961959).
Provider details
- NPI number
- 1255961959
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 9426584 (FL)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
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
6 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.
$242 across 8 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
- 2020-01-22
- Last updated
- 2024-10-20
- Certified
- 2024-10-20
Frequently asked questions
- What is Mallory Groff's NPI number?
- Mallory Groff's National Provider Identifier (NPI) is 1255961959, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mallory Groff's specialty?
- Mallory Groff is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mallory Groff located?
- Mallory Groff's practice location on file with NPPES is 108 Walnut Run Rd, Landenberg, PA 19350-9305.
- What is Mallory Groff's phone number?
- The practice phone number listed in the NPPES registry for Mallory Groff is (302) 217-6020.
- Does Mallory Groff accept Medicare?
- Mallory Groff is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mallory Groff's NPI active?
- Yes — Mallory Groff's NPI (1255961959) is active in the NPPES registry as of the last update on 2024-10-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.