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LYSSA MERRIAM PETTER MS,RD,LDN
NPI 1710086277
Dietitian, Registered in Methuen, MA

Active since September 21, 2006
CARITAS HOLY FAMILY HOSPITAL 70 EAST STREET, CONVENT BUILDING, METHUEN, MA 01844(978) 687-0156(978) 681-9075 Get Directions Write a Review

NPPES record last updated: June 11, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Lyssa Merriam Petter Ms,rd,ldn NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

LYSSA MERRIAM PETTER MS,RD,LDN (NPI 1710086277) is an individual dietitian, registered in Methuen, Massachusetts, licensed in Massachusetts (826) and active in the NPI registry since September 2006. She is a graduate of New York University School Of Medicine (1987).

NPPES Registry Identity

NPI1710086277
Entity TypeIndividualFemale
Primary Taxonomy133V00000X
Provider Legal NameLYSSA MERRIAM PETTERCredential: MS,RD,LDN
Location AddressCARITAS HOLY FAMILY HOSPITAL 70 EAST STREET, CONVENT BUILDINGMethuen, MA 01844
Mailing Address13 Pinecrest RdAndover, MA 01810-5712 · (978) 687-0156 · Fax (978) 681-9075
Phone(978) 687-0156
Fax(978) 681-9075
Sole ProprietorNo
Medical School CMSNew York University School Of MedicineGraduated 1987
Enumeration DateSeptember 21, 2006
Last NPPES UpdateJune 11, 2026
NPPES CertifiedJune 11, 2026
✔ NPI 1710086277 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDietitian, RegisteredDietary & Nutritional Service Providers
Taxonomy Code133V00000X
License✔ Licensed in MA · 826
Definition
A Registered Dietitian (RD)/Registered Dietitian Nutritionist (RDN) is an individual uniquely trained in the science of nutrition and practice of dietetics to design and provide medical nutrition therapy (MNT) and other evidence-based applications of the Nutrition Care Process (NCP) that exemplify the profession's systematic approach to providing high quality nutrition care. Registered dietitians provide MNT for the purpose of disease prevention or management, or to treat or rehabilitate an illness, injury, or condition, with the use of specific, indicated physical and cognitive nutrition care services comprised of one or more of the following aspects of the NCP: nutrition assessment/reassessment, nutrition diagnosis, nutrition intervention (e.g., nutrition counseling, therapeutic diet ordering, and nutrition education) and nutrition monitoring and evaluation.
CARITAS HOLY FAMILY HOSPITAL 70 EAST STREET, Methuen, MA 01844
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Other Identifiers 2

Other701743MA · Cdr Id #
Other826MA · Dietitian License #

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Lyssa Merriam Petter Ms,rd,ldn is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID7911943816
PECOS Enrollment IDI20050630000656

Medicare Billing Reassignments

2

Medicare enrollment records show Lyssa Petter reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Steward Medical Group, Inc
25 mi
Specialist
9 GALEN ST
Watertown, MA 02472
  • Reassigned Medicare billing, Massachusetts enrollment
  • 1,103 clinicians in this Medicare group
NPI 1629398219 (615) 467-4474
Lifespan Physician Group Of Massachusetts Inc
53 mi
Family Medicine
2007 BAY ST
Taunton, MA 02780
  • Reassigned Medicare billing, Massachusetts enrollment
  • 547 clinicians in this Medicare group
NPI 1235957713 (774) 409-2009

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Lyssa Petter's NPI number?

The NPI number for Lyssa Petter is 1710086277. It was assigned to this individual provider in the NPPES registry on September 21, 2006.

Where is Lyssa Petter located?

Lyssa Petter practices at Caritas Holy Family Hospital 70 East Street Convent Building, Methuen, MA 01844. The listed phone number is (978) 687-0156.

What is Lyssa Petter's specialty?

The primary specialty registered for this NPI is Dietitian, Registered with taxonomy code 133V00000X.

Is Lyssa Petter enrolled in Medicare?

Yes. Lyssa Petter is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Lyssa Petter's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Lyssa Petter reassigns Medicare benefits to 2 organizations: Steward Medical Group, Inc (Watertown, MA) and Lifespan Physician Group Of Massachusetts Inc (Taunton, 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 Lyssa Petter's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Lyssa Petter was last updated on June 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.