MARSHA NALINI MATHER MD
NPI 1831772623
Internal Medicine in Hyannis, MA
About Marsha Nalini Mather Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARSHA NALINI MATHER MD (NPI 1831772623) is an individual internal medicine provider in Hyannis, Massachusetts, licensed in Massachusetts (1018443) and active in the NPI registry since April 2021. She is enrolled in Medicare PECOS, is affiliated with Cape Cod Hospital, and is a graduate of Other (2014).
NPPES Registry Identity
Specialties & Licenses
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
Marsha Nalini Mather 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
2Medicare enrollment records show Marsha Mather reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hyannis, MA 02601
- Reassigned Medicare billing, Massachusetts enrollment
- 423 clinicians in this Medicare group
Hyannis, MA 02601
- Reassigned Medicare billing, Massachusetts enrollment
- 678 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 7
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.
Cape Cod Hospital
Acute Care Hospitals · Hyannis, MAMassachusetts General Hospital
Acute Care Hospitals · Boston, MAFalmouth Hospital
Acute Care Hospitals · Falmouth, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02601 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
HYANNIS, MA 02601
HYANNIS, MA 02601
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 Marsha Mather's NPI number?
The NPI number for Marsha Mather is 1831772623. It was assigned to this individual provider in the NPPES registry on April 30, 2021.
Where is Marsha Mather located?
Marsha Mather practices at 1030 Falmouth Rd Ste 101, Hyannis, MA 02601. The listed phone number is (774) 552-3209.
What is Marsha Mather's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Marsha Mather enrolled in Medicare?
Yes. Marsha Mather 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 Marsha Mather's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marsha Mather reassigns Medicare benefits to 2 organizations: Medical Affiliates Of Cape Cod, Inc. (Hyannis, MA) and Physicians Of Cape Cod Hospital (Hyannis, 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 Marsha Mather's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Marsha Mather accept?
Health plans from Taro Health list Marsha Mather 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 Marsha Mather affiliated with any hospitals?
According to CMS data, Marsha Mather is affiliated with Cape Cod Hospital, Massachusetts General Hospital and Falmouth Hospital.
When was this NPI record last updated?
The NPPES record for Marsha Mather was last updated on January 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 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.
# Marsha Nalini Mather, MD · NPI 1831772623
Internal Medicine physician in Hyannis, Massachusetts. Individual provider, active in the CMS NPPES registry since April 30, 2021.
## Identity
- **NPI:** 1831772623 (Entity type: Individual)
- **Enumerated:** April 30, 2021
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 1018443 (Massachusetts)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1030 FALMOUTH RD STE 101, Hyannis, MA 02601-2324
- **Phone:** (774) 552-3209
## 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): Medical Affiliates Of Cape Cod, Inc. (NPI 1770534927, Hyannis, MA); Physicians Of Cape Cod Hospital (NPI 1679832364, Hyannis, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** January 8, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1831772623) · Data from the CMS NPPES public registry.