Mariah Grispi
NPI 1861034720 · Primary Care Nurse Practitioner · Weymouth, MA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mariah Grispi is a Primary Care Nurse Practitioner provider in Weymouth, MA (NPI 1861034720).
Provider details
- NPI number
- 1861034720
- Entity type
- Individual
- Primary specialty
- Primary Care Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- Yes
- License
- F08190360 (MA)
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 tenure28% of score
6 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
345 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 217 | $93 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 92 | $65 |
| Psychiatric Diagnostic Evaluation With Medical Services90792 | 36 | $166 |
Typical Medicare-allowed amounts for these services range $65–$166 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-10-11
- Last updated
- 2021-07-02
- Certified
- 2021-07-02
Frequently asked questions
- What is Mariah Grispi's NPI number?
- Mariah Grispi's National Provider Identifier (NPI) is 1861034720, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mariah Grispi's specialty?
- Mariah Grispi is listed in the NPPES registry with a primary specialty of Primary Care Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mariah Grispi located?
- Mariah Grispi's practice location on file with NPPES is 330 Washington St, Weymouth, MA 02188-2932.
- What is Mariah Grispi's phone number?
- The practice phone number listed in the NPPES registry for Mariah Grispi is (781) 626-5160.
- Does Mariah Grispi accept Medicare?
- Mariah Grispi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mariah Grispi's NPI active?
- Yes — Mariah Grispi's NPI (1861034720) is active in the NPPES registry as of the last update on 2021-07-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.