MARCUS SIDNEY SHAKER M.D.
NPI 1679686836
Allergy & Immunology - Allergy in Lebanon, NH
About Marcus Sidney Shaker M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARCUS SIDNEY SHAKER M.D. (NPI 1679686836) is an individual allergy provider in Lebanon, New Hampshire, licensed in New Hampshire (12538) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Mary Hitchcock Memorial Hospital, and is a graduate of University Of Virginia School Of Medicine (1998).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 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
Marcus Sidney Shaker 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
2Medicare enrollment records show Marcus Shaker reassigns Medicare billing to 2 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
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mary Hitchcock Memorial Hospital
Acute Care Hospitals · Lebanon, NHMedicare 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.
Other Providers at the Same Location NPPES 20
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
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 Marcus Shaker's NPI number?
The NPI number for Marcus Shaker is 1679686836. It was assigned to this individual provider in the NPPES registry on August 15, 2006.
Where is Marcus Shaker located?
Marcus Shaker practices at 1 Medical Center Dr, Lebanon, NH 03756. The listed phone number is (603) 653-9885.
What is Marcus Shaker's specialty?
The primary specialty registered for this NPI is Allergy & Immunology, specializing in Allergy, with taxonomy code 207KA0200X.
Is Marcus Shaker enrolled in Medicare?
Yes. Marcus Shaker 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 Marcus Shaker's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marcus Shaker reassigns Medicare benefits to 2 organizations: Mary Hitchcock Memorial Hospital (Lebanon, NH) and Dartmouth-Hitchcock Clinic (Lebanon, NH). 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 Marcus Shaker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Marcus Shaker accept?
Health plans from Ambetter from NH Healthy Families, Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care and Taro Health list Marcus Shaker 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 Marcus Shaker affiliated with any hospitals?
According to CMS data, Marcus Shaker is affiliated with Mary Hitchcock Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Marcus Shaker was last updated on January 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Marcus Sidney Shaker, M.D. · NPI 1679686836
Allergy physician in Lebanon, New Hampshire. Individual provider, active in the CMS NPPES registry since August 15, 2006.
## Identity
- **NPI:** 1679686836 (Entity type: Individual)
- **Enumerated:** August 15, 2006
- **Primary specialty:** Allergy & Immunology - Allergy · taxonomy 207KA0200X
- **State license:** 12538 (New Hampshire)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 MEDICAL CENTER DR, Lebanon, NH 03756-1000
- **Phone:** (603) 653-9885 · **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:** 2 organizations under Medicare reassignment (form CMS-855R): Mary Hitchcock Memorial Hospital (NPI 1629788237, Lebanon, NH); Dartmouth-Hitchcock Clinic (NPI 1548210198, Lebanon, NH) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Virginia School Of Medicine, class of 1998
## Record status
- **NPPES last updated:** January 9, 2026
- **Other identifiers:** Medicaid 30204685 (NH); Medicaid 1010922 (VT)
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Source: [NPI Profile](https://npiprofile.com/npi/1679686836) · Data from the CMS NPPES public registry.