Gregory Marcellin, FNP-BC
Family Nurse Practitioner · Boston, MA
Gregory Marcellin, FNP-BC is a family nurse practitioner with a practice address in Boston, Massachusetts, and NPI 1881060861, issued on Aug 13, 2015. Check the license (Massachusetts RN2290802, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gregory Marcellin
- Credential
- FNP-BC
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- RN2290802 MA
6225 CT
Self-reported in NPPES; status is on the state search - Practice location
- 1601 Washington St, Boston, MA 02118
- Phone
- (617) 425-2000
- Enumerated
- Aug 13, 2015
- Record last updated
- Nov 16, 2023
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 4,724 in Massachusetts → Look up another NPI →
Also registered at 1601 Washington St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Gulnora Aminova, PH.D.Mental Health Counselor1518412964
Verify Gregory Marcellin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license RN2290802Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average family nurse practitioner in 2024
22 Medicare Part D claims, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Gregory Marcellin among 4,724 family nurse practitioner records in Massachusetts
Gregory Marcellin, FNP-BC 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 2015, is newer than 34% of them.
- NPI issued2015 · 34% of these records are older, 61% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2023 · 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).
938 family nurse practitioner records list a practice address in Boston
They are 938 of the 41,865 NPPES records with a practice address in Boston, and 4,724 family nurse practitioner records in Massachusetts.
All 4,724 in Massachusetts → Every provider in Boston → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Marjorie Arvedon, FNPBoston, MA 021181376529842
- Ellen Bitz, NPBoston, MA 021181649254798
- Lois Doerr, NPBoston, MA 021181194784546
- Karen Friedman, MS RNC FNPBoston, MA 021181861421299
- Faye Huang, NPBoston, MA 021181366432353
- Terri Lacoursiere Zucchero, PHD, RN, FNP-BCBoston, MA 021181770565475
- Claire Murphy, NP-CBoston, MA 021181568447217
- Nancy Paull, NPBoston, MA 021181457466914
Common questions
What is Gregory Marcellin, FNP-BC's NPI number?
Gregory Marcellin, FNP-BC's National Provider Identifier (NPI) is 1881060861, issued on Aug 13, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Marcellin, FNP-BC located?
The NPPES record lists a practice address at 1601 Washington St, Boston, MA, 02118. Phone: (617) 425-2000. Providers update this record themselves, so call before visiting.
How can I verify Gregory Marcellin, FNP-BC's license?
NPPES lists Massachusetts license number RN2290802, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Gregory Marcellin, FNP-BC prescribe under Medicare Part D?
In 2024, Gregory Marcellin, FNP-BC had 22 Medicare Part D claims; 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.