DR. GRANT LOREN IVERSON PHD
NPI 1033524913
Clinical Neuropsychologist in Boston, MA
About Dr. Grant Loren Iverson Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GRANT LOREN IVERSON PHD (NPI 1033524913) is an individual clinical neuropsychologist in Boston, Massachusetts, licensed in Massachusetts (9828) and active in the NPI registry since June 2014. He is enrolled in Medicare PECOS and is a graduate of West Virginia University School Of Medicine (1993).
NPPES Registry Identity
Specialties & Licenses 2
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
Dr. Grant Loren Iverson Phd 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
2Medicare enrollment records show Grant Iverson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,360 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.
Other Providers at the Same Location NPPES 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BOSTON, MA 02114
BOSTON, MA 02114
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 Grant Iverson's NPI number?
The NPI number for Grant Iverson is 1033524913. It was assigned to this individual provider in the NPPES registry on June 30, 2014.
Where is Grant Iverson located?
Grant Iverson practices at Home Base Program 101 Merrimac Street, 2nd Floor, Boston, MA 02114. The listed phone number is (617) 573-2770.
What is Grant Iverson's specialty?
The primary specialty registered for this NPI is Clinical Neuropsychologist with taxonomy code 103G00000X.
Is Grant Iverson enrolled in Medicare?
Yes. Grant Iverson 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 Grant Iverson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Grant Iverson reassigns Medicare benefits to 2 organizations: The General Hospital Corporation (Boston, MA) and Massachusetts General Physicians Organization Inc (Boston, MA). 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 Grant Iverson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Grant Iverson accept?
Health plans from Harvard Pilgrim Health Care, Taro Health and WellSense Health Plan list Grant Iverson 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.
When was this NPI record last updated?
The NPPES record for Grant Iverson was last updated on July 2, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years 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.
# Dr. Grant Loren Iverson, PHD · NPI 1033524913
Clinical Neuropsychologist provider in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since June 30, 2014.
## Identity
- **NPI:** 1033524913 (Entity type: Individual)
- **Enumerated:** June 30, 2014
- **Primary specialty:** Clinical Neuropsychologist · taxonomy 103G00000X
- **State license:** 9828 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** HOME BASE PROGRAM, 101 MERRIMAC STREET, 2ND FLOOR, Boston, MA 02114
- **Phone:** (617) 573-2770
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): The General Hospital Corporation (NPI 1023049236, Boston, MA); Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** West Virginia University School Of Medicine, class of 1993
## Record status
- **NPPES last updated:** July 2, 2014
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Source: [NPI Profile](https://npiprofile.com/npi/1033524913) · Data from the CMS NPPES public registry.