Alison Mastin
NPI 1821407750 · Nurse Practitioner · Grand Rapids, MI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alison Mastin is a Nurse Practitioner provider in Grand Rapids, MI (NPI 1821407750).
Provider details
- NPI number
- 1821407750
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 4704250930 (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
11 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.
$82 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
- 2014-08-05
- Last updated
- 2025-05-08
- Certified
- 2025-05-08
Frequently asked questions
- What is Alison Mastin's NPI number?
- Alison Mastin's National Provider Identifier (NPI) is 1821407750, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alison Mastin's specialty?
- Alison Mastin is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Alison Mastin located?
- Alison Mastin's practice location on file with NPPES is 35 Michigan St Ne Fl 2, Grand Rapids, MI 49503-2514.
- What is Alison Mastin's phone number?
- The practice phone number listed in the NPPES registry for Alison Mastin is (616) 267-1925.
- Does Alison Mastin accept Medicare?
- Alison Mastin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alison Mastin's NPI active?
- Yes — Alison Mastin's NPI (1821407750) is active in the NPPES registry as of the last update on 2025-05-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.