Dr. Marsha Nalini Mather, MD
- Medicare services, 2024
- 1,623
- Medicare patients, 2024
- 118
- Part D claims, 2024
- 583
- MIPS score, 2024
- 76
- Hospital affiliations
- 4
- Practice address
- 27 Park Street, Hyannis, MA 02601
- Practice phone
- Call (508) 771-1800
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Mather's professional email, personal email and mobile number
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Dr. Marsha Nalini Mather is an internist in Hyannis, Massachusetts
Dr. Mather practices at Cape Cod Hospital in Hyannis, Massachusetts, part of Cape Cod Healthcare.
Dr. Mather's NPI, 1831772623, was assigned on April 30, 2021. Dr. Mather holds Massachusetts license 1018443.
- NPI
- 1831772623NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5991102485
- NPI enumeration date
- April 30, 2021
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (508) 771-1800
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Marsha Nalini Mather practices at Cape Cod Hospital in Hyannis, Massachusetts
Dr. Mather's primary practice is Cape Cod Hospital, at 27 Park Street, Hyannis, MA 02601 in Barnstable County. The practice phone is (508) 771-1800.
- Cape Cod Hospital27 Park Street, Hyannis, MA 02601 · Barnstable CountyPhone(508) 771-1800
Source: Dmand AI Affiliation Data
Dr. Marsha Nalini Mather is affiliated with 8 sites of care and 2 medical groups
Dr. Mather's primary practice is Cape Cod Hospital in Hyannis, Massachusetts, part of Cape Cod Healthcare. Dr. Mather is also affiliated with Massachusetts General Hospital. The medical group on file is Cape Cod Healthcare. Dmand AI also links Dr. Mather to 2 more hospitals, 2 group practices and clinics, 2 home health agencies and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Marsha Nalini Mather's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mather practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Cape Cod Hospital | Available with a free account |
| +7 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across Cape Cod Healthcare and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Marsha Nalini Mather is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Mather's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Mather is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
Internists near Dr. Mather
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Marsha Nalini Mather billed Medicare for 1,623 services in 2024
CMS data shows 1,623 Medicare services from Dr. Mather across 8 procedure codes in 2024, for 118 Medicare patients. Medicare paid $41,826 for them. Every service was in an office.
Dr. Mather's Medicare services by type, 2024
- Drugs given in the office1,440
- Other services83
- Office and hospital visits54
- Tests and treatments46
Dr. Mather compared with the Massachusetts median for internists, 2024
- Dr. Mather
- Massachusetts median
- Medicare services
- 1,623vs 4313.8 times
- Medicare patients
- 118vs 19439% below
- Part D claims
- 295vs 40227% below
Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Mather's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Marsha Nalini Mather treated 118 Medicare patients in 2024, average age 74
CMS counts 118 Medicare patients who saw Dr. Mather in 2024. The largest group is 65 to 74, with 62 patients. 75% of them have high cholesterol, and 65% have high blood pressure. 14% are also on Medicaid. Their average risk score is 1.05, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Mather's median patient age at 71, with 79% women.
Dr. Mather's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Mather's Medicare patients by sex, 2024
- Women9681%
- Men2219%
Chronic conditions among Dr. Mather's Medicare patients, 2024
- High cholesterol75%
- High blood pressure65%
- Arthritis47%
- Osteoporosis42%
- Ischemic heart disease27%
- Anxiety21%
- Mood disorders20%
- Diabetes18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Mather's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women79%
- Men20%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Marsha Nalini Mather wrote 583 Medicare Part D claims in 2024
In 2024, Dr. Mather wrote 583 Medicare Part D claims for 176 patients. 86% of them were for generic drugs. CMS names the drug for 295 of them, across 13 drugs with 11 or more claims each, at $9,097 in total drug cost. In 2023, CMS named 338 claims across 16 drugs.
Dr. Mather's Part D claims by kind of drug, 2024
- Generic504 claims86%
- Brand-name and other79 claims14%
Dr. Mather's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Mather's Part D claims, 2024
- Antibiotics3%18 of 583 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3382024: 29513%
Drugs named by CMS: 13 in 2024, 16 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Marsha Nalini Mather scored 76 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 76 out of 100 for Dr. Mather for performance year 2024, reported as part of a group. Dr. Mather accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Mather as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Mather's MIPS scores, performance year 2024
- 76of 100Final score
- 56.8of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Marsha Nalini Mather received $275 in industry payments in 2025
CMS Open Payments shows 2 general payments to Dr. Mather from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Stryker Corporation paid the most, $150.
Companies that paid Dr. Mather the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Marsha Nalini Mather's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Marsha Nalini Mather
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Marsha Nalini Mather's NPI number?
Dr. Marsha Nalini Mather's NPI number is 1831772623. It was assigned on April 30, 2021, and it is active in the NPI Registry.
What kind of doctor is Dr. Marsha Nalini Mather?
Dr. Marsha Nalini Mather is an internist in Hyannis, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Marsha Nalini Mather practice?
Dr. Mather practices at 27 Park Street, Hyannis, MA 02601. Dr. Mather's primary practice is Cape Cod Hospital in Hyannis, Massachusetts, part of Cape Cod Healthcare. Dmand AI also links Dr. Mather to 2 hospitals, 2 group practices and clinics, 2 home health agencies and 1 medical group.
What is Dr. Marsha Nalini Mather's office phone number?
The practice phone on file for Dr. Mather is (508) 771-1800.
What is Dr. Marsha Nalini Mather's medical license number?
Dr. Mather holds Massachusetts license 1018443.
Which hospitals is Dr. Marsha Nalini Mather affiliated with?
Dr. Mather practices at Cape Cod Hospital in Hyannis, Massachusetts. Dr. Mather is also affiliated with Massachusetts General Hospital. Dmand AI links Dr. Mather to 2 more hospitals.
What medical group is Dr. Marsha Nalini Mather part of?
Dr. Mather is linked to Cape Cod Healthcare. Dmand AI links Dr. Mather to 1 more medical group.
Does Dr. Marsha Nalini Mather accept Medicare?
Yes. CMS data shows Dr. Mather billed Medicare for 1,623 services in 2024, and Dr. Mather accepts Medicare assignment.
Does Dr. Marsha Nalini Mather offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Mather as offering telehealth services.
What is Dr. Marsha Nalini Mather's MIPS score?
Dr. Mather's MIPS final score for performance year 2024 is 76 out of 100, reported as part of a group.
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How many Medicare patients does Dr. Marsha Nalini Mather see?
CMS counts 118 Medicare patients who saw Dr. Mather in 2024, with an average age of 74.
What services does Dr. Marsha Nalini Mather bill to Medicare?
In 2024, Dr. Mather's most billed Medicare services were injected or infused drug (J0897), medicare service (G2211) and office visit, established patient (99214).
What drugs does Dr. Marsha Nalini Mather prescribe most?
In 2024 Medicare Part D data, Dr. Mather's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Lisinopril.
Has Dr. Marsha Nalini Mather received payments from drug or device companies?
CMS Open Payments shows $275 in general payments to Dr. Mather from 2 companies from 2025 to 2025. The largest total came from Stryker Corporation.
How long has Dr. Marsha Nalini Mather been practicing?
Dr. Mather graduated from medical school in 2014, 12 years ago.
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