Doctor profile · Federal record
Dr. Gregory Marcellin, FNP-BC
Family Nurse Practitioner · Family Nurse Practitioner · Boston, MA
- NPI 1881060861
- 11 yrs on file
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
1601 Washington St
Boston, MA 021181951
(617) 425-2000 - Additional location
-
1 Portsmouth Ave
Stratham, NH 038852585
(603) 772-3600
fax (603) 772-3601 - Mailing address
-
14 Dyer Ave
Everett, MA 021491201
Credentials & registration
- NPI registered
- August 2015 — 11 yrs on file
- Profile last updated
- November 16, 2023
- Specialty taxonomy
- 363LF0000X — NUCC code
- State licenses (2)
- Massachusetts #RN2290802 · Connecticut #6225
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1881060861. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
42
Distinct HCPCS
3
Medicare allowed
$3,891
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99203 |
New patient office or other outpatient visit, 30-44 minutes | 16 | 16 | $96 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 15 | 15 | $77 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 11 | 11 | $109 |
In context: peer comparison
Among 119 peers in this city , average services per provider: 98. This provider delivers 0.4× the peer median.Frequently asked questions
What is Dr. Gregory Marcellin's medical specialty?
Dr. Gregory Marcellin practices Family Nurse Practitioner in Boston, MA.
Where does Dr. Gregory Marcellin practice?
Dr. Gregory Marcellin practices at 1601 Washington St, Boston, MA 021181951. Office phone: 6174252000.
What is Dr. Gregory Marcellin's NPI?
Dr. Gregory Marcellin's National Provider Identifier (NPI) is 1881060861, issued by NPPES.
What procedures does Dr. Gregory Marcellin commonly perform?
Top Medicare-reported procedures in 2023: New patient office or other outpatient visit (HCPCS 99203); Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.