Marissa Jane Casillo, FNP
Family Nurse Practitioner · Foxboro, MA
Marissa Jane Casillo, FNP is a family nurse practitioner with a practice address in Foxboro, Massachusetts, and NPI 1972251817, issued on Mar 10, 2022. Check the license (Massachusetts RN2273512, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marissa Jane Casillo
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- RN2273512 MA
F03210086 MA
Self-reported in NPPES; status is on the state search - Practice location
- 18 Washington St, Foxboro, MA 02035
- Phone
- (781) 551-5812
- Enumerated
- Mar 10, 2022
- Record last updated
- Jun 12, 2026
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 4,724 in Massachusetts → Look up another NPI →
Also registered at 18 Washington St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Marissa Jane Casillo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license RN2273512Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6% fewer Medicare Part D claims than the average family nurse practitioner in 2024
1,233 Medicare Part D claims for 171 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 38% of claims. 18 claims were for opioids.
Most prescribed
- Gabapentin140 claims
- Ubrelvy109 claims
- Nurtec Odt92 claims
- Baclofen69 claims
- Dalfampridine Er65 claims
- Emgality Pen65 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $3,784.97
143 payments; by number, the most common kind was food and beverage; the largest payer was Lundbeck LLC. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Marissa Jane Casillo among 4,724 family nurse practitioner records in Massachusetts
Marissa Jane Casillo, FNP is one of 4,724 family nurse practitioner records with a practice address in Massachusetts. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 72% of them.
- NPI issued2022 · 72% of these records are older, 21% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2026 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 family nurse practitioner records list a practice address in Foxboro
They are 9 of the 305 NPPES records with a practice address in Foxboro, and 4,724 family nurse practitioner records in Massachusetts.
All 4,724 in Massachusetts → Every provider in Foxboro → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Colleen Ammidown, FNPFoxborough, MA 020351932392677
- Jessica BrensFoxborough, MA 020351316425481
- Johanna Brooks, NP-CFoxboro, MA 020351518475664
- Danielle CalliontzisFoxboro, MA 020351184355075
- Lucille Cook, N.P.Foxboro, MA 020351144298969
- Casey Gallagher, FNP-BCFoxborough, MA 020351043915382
- Susan Goode, N.P.Foxboro, MA 020351982755294
- Keri Grothe, FNP-CFoxborough, MA 020351417323072
Common questions
What is Marissa Jane Casillo, FNP's NPI number?
Marissa Jane Casillo, FNP's National Provider Identifier (NPI) is 1972251817, issued on Mar 10, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Marissa Jane Casillo, FNP located?
The NPPES record lists a practice address at 18 Washington St, Foxboro, MA, 02035. Phone: (781) 551-5812. Providers update this record themselves, so call before visiting.
How can I verify Marissa Jane Casillo, FNP's license?
NPPES lists Massachusetts license number RN2273512, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Marissa Jane Casillo, FNP prescribe under Medicare Part D?
In 2024, Marissa Jane Casillo, FNP had 1,233 Medicare Part D claims for 171 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.