DR. MARK GARRET M.D.
NPI 1245683226
Psychiatry & Neurology - Neuromuscular Medicine in Lebanon, NH
About Dr. Mark Garret M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARK GARRET M.D. (NPI 1245683226) is an individual neuromuscular medicine provider in Lebanon, New Hampshire, licensed in New Hampshire (33832) and active in the NPI registry since July 2016. He is enrolled in Medicare PECOS, is affiliated with Mary Hitchcock Memorial Hospital, and maintains a secondary practice location in Boston.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 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
Dr. Mark Garret M.d. 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
4Medicare enrollment records show Mark Garret reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Lebanon, NH 03756
- Reassigned Medicare billing, New Hampshire enrollment
- 2,620 clinicians in this Medicare group
Lebanon, NH 03756
- Reassigned Medicare billing, New Hampshire enrollment
- 2,999 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,360 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 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 2
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mary Hitchcock Memorial Hospital
Acute Care Hospitals · Lebanon, NHCheshire Medical Center
Acute Care Hospitals · Keene, NHCatholic Medical Center
Acute Care Hospitals · Manchester, NHOther Providers at the Same Location NPPES 6
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LEBANON, NH 03756
LEBANON, NH 03756
LEBANON, NH 03756
LEBANON, NH 03756
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 Mark Garret's NPI number?
The NPI number for Mark Garret is 1245683226. It was assigned to this individual provider in the NPPES registry on July 14, 2016.
Where is Mark Garret located?
Mark Garret practices at 1 Medical Center Dr # 1000, Lebanon, NH 03756. The listed phone number is (603) 650-5000.
What is Mark Garret's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neuromuscular Medicine, with taxonomy code 2084N0008X.
Is Mark Garret enrolled in Medicare?
Yes. Mark Garret 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 Mark Garret's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Garret reassigns Medicare benefits to 4 organizations: Mary Hitchcock Memorial Hospital (Lebanon, NH), Dartmouth-Hitchcock Clinic (Lebanon, NH), Massachusetts General Physicians Organization Inc (Boston, MA) and The General Hospital Corporation (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 Mark Garret's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Garret accept?
Health plans from Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list Mark Garret 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 Mark Garret affiliated with any hospitals?
According to CMS data, Mark Garret is affiliated with Mary Hitchcock Memorial Hospital, Cheshire Medical Center and Catholic Medical Center.
When was this NPI record last updated?
The NPPES record for Mark Garret was last updated on May 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Dr. Mark Garret, M.D. · NPI 1245683226
Neuromuscular Medicine physician in Lebanon, New Hampshire. Individual provider, active in the CMS NPPES registry since July 14, 2016.
## Identity
- **NPI:** 1245683226 (Entity type: Individual)
- **Enumerated:** July 14, 2016
- **Primary specialty:** Psychiatry & Neurology - Neuromuscular Medicine · taxonomy 2084N0008X
- **State license:** 33832 (New Hampshire)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 MEDICAL CENTER DR # 1000, Lebanon, NH 03756-0001
- **Phone:** (603) 650-5000 · **Fax:** (603) 640-1228
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Mary Hitchcock Memorial Hospital (NPI 1629788237, Lebanon, NH); Dartmouth-Hitchcock Clinic (NPI 1548210198, Lebanon, NH); Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA); The General Hospital Corporation (NPI 1023049236, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2016
## Record status
- **NPPES last updated:** May 21, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1245683226) · Data from the CMS NPPES public registry.