JOHN J GULLO MD
NPI 1700865243
Internal Medicine - Medical Oncology in Brunswick, ME
About John J Gullo Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN J GULLO MD (NPI 1700865243) is an individual medical oncology provider in Brunswick, Maine, licensed in Maine (MD21675) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, is affiliated with Maine Medical Center, and maintains 4 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 4
Secondary Practice Locations 4
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
John J Gullo Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
5Medicare enrollment records show John Gullo reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Brunswick, ME 04011
- Reassigned Medicare billing, Maine enrollment
- Also billed through NPI 1346299815 (Maine), NPI 1841397932 (Maine)
- 3,140 clinicians in this Medicare group
Falmouth, ME 04105
- Reassigned Medicare billing, Maine enrollment
- 264 clinicians in this Medicare group
Lewiston, ME 04240
- Reassigned Medicare billing, Maine enrollment
- Medicare enrollment name: St Marys Regional Medical Center
- 381 clinicians in this Medicare group
Rockland, ME 04841
- Reassigned Medicare billing, Maine enrollment
- 59 clinicians in this Medicare group
Belfast, ME 04915
- Reassigned Medicare billing, Maine enrollment
- Medicare enrollment name: Waldo County General Hospital
- 82 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Maine Medical Center
Acute Care Hospitals · Portland, MEMid Coast Hospital
Acute Care Hospitals · Brunswick, MELincolnhealth
Critical Access Hospitals · Damariscotta, MEStephens Memorial Hospital
Critical Access Hospitals · Norway, MEPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 04011 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BRUNSWICK, ME 04011
BRUNSWICK, ME 04011
BRUNSWICK, ME 04011
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is John Gullo's NPI number?
The NPI number for John Gullo is 1700865243. It was assigned to this individual provider in the NPPES registry on January 12, 2006.
Where is John Gullo located?
John Gullo practices at 329 Maine St Ste E101, Brunswick, ME 04011. The listed phone number is (207) 373-2266.
What is John Gullo's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.
Is John Gullo enrolled in Medicare?
Yes. John Gullo is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for John Gullo's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Gullo reassigns Medicare benefits to 5 organizations: Mainehealth (Brunswick, ME), Maine Medical Partners (Falmouth, ME), St. Mary's Regional Medical Center (Lewiston, ME), Penobscot Bay Medical Center (Rockland, ME) and Mainehealth (Belfast, ME). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Gullo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Gullo accept?
Health plans from Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care and Taro Health list John Gullo as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is John Gullo affiliated with any hospitals?
According to CMS data, John Gullo is affiliated with Maine Medical Center, Mid Coast Hospital, Lincolnhealth and Stephens Memorial Hospital.
When was this NPI record last updated?
The NPPES record for John Gullo was last updated on April 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# John J Gullo, MD · NPI 1700865243
Medical Oncology physician in Brunswick, Maine. Individual provider, active in the CMS NPPES registry since January 12, 2006.
## Identity
- **NPI:** 1700865243 (Entity type: Individual)
- **Enumerated:** January 12, 2006
- **Primary specialty:** Internal Medicine - Medical Oncology · taxonomy 207RX0202X
- **State license:** MD21675 (Maine)
- **Sole proprietor:** No
## Practice location
- **Address:** 329 MAINE ST STE E101, Brunswick, ME 04011-3310
- **Phone:** (207) 373-2266 · **Fax:** (207) 910-4413
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 5 organizations under Medicare reassignment (form CMS-855R): Mainehealth (NPI 1902422561, Brunswick, ME); Maine Medical Partners (NPI 1891083119, Falmouth, ME); St. Mary's Regional Medical Center (NPI 1447226584, Lewiston, ME); Penobscot Bay Medical Center (NPI 1164668943, Rockland, ME); Mainehealth (NPI 1841397932, Belfast, ME) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** State University Of Ny Upstate Medical University, class of 1972
## Record status
- **NPPES last updated:** April 8, 2025
- **Other identifiers:** Medicaid 00602671 (NY)
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Source: [NPI Profile](https://npiprofile.com/npi/1700865243) · Data from the CMS NPPES public registry.