Dr. Matthew Mariyampillai, MD
- Medicare services, 2024
- 195
- Medicare patients, 2024
- 299
- Hospital affiliations
- 4
- Industry payments
- $36
- Medical groups
- 4
- Practice address
- 55 North Ave, Mendon, MA 01756
- Practice phone
- Call (508) 334-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Umass Memorial Medical Center
Mendon, Massachusetts
Find Dr. Mariyampillai's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Matthew Mariyampillai is an internist in Mendon, Massachusetts
Dr. Mariyampillai practices at Umass Memorial Medical Center in Mendon, Massachusetts.
Dr. Mariyampillai's NPI, 1578123485, was assigned on June 13, 2019. Dr. Mariyampillai graduated from Virginia Commonwealth University, School of Medicine in 2019. Dr. Mariyampillai holds Pennsylvania license MT218892.
- NPI
- 1578123485NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1052731429
- NPI enumeration date
- June 13, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (508) 334-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Matthew Mariyampillai practices at Umass Memorial Medical Center in Mendon, Massachusetts
Dr. Mariyampillai's primary practice is Umass Memorial Medical Center, at 55 North Ave, Mendon, MA 01756 in Worcester County. The practice phone is (508) 334-1000.
- Umass Memorial Medical Center55 North Ave, Mendon, MA 01756 · Worcester CountyPhone(508) 334-1000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Matthew Mariyampillai is affiliated with 5 sites of care and 4 medical groups
Dr. Mariyampillai's primary practice is Umass Memorial Medical Center in Mendon, Massachusetts. Dr. Mariyampillai is also affiliated with UMass Memorial Medical Center - University Campus. The medical group on file is UMass Memorial Medical Group. Dmand AI also links Dr. Mariyampillai to 3 more hospitals and 3 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Matthew Mariyampillai's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mariyampillai practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Umass Memorial Medical Center | Available with a free account |
| +4 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Matthew Mariyampillai is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Mariyampillai's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Mariyampillai's licenses on file in 2 states: Pennsylvania and Massachusetts.
Specialties and state licenses
- Internal medicine, PennsylvaniaPrimary
- Diagnostic radiology, Massachusetts
Internists near Dr. Mariyampillai
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. Matthew Mariyampillai billed Medicare for 195 services in 2024
CMS data shows 195 Medicare services from Dr. Mariyampillai across 8 procedure codes in 2024, for 299 Medicare patients. Medicare paid $1,609 for them.
Where Dr. Mariyampillai's Medicare services took place, 2024
- In an office4925%
- In a facility14675%
Dr. Mariyampillai compared with the Massachusetts median for internists, 2024
- Dr. Mariyampillai
- Massachusetts median
- Medicare services
- 195vs 43155% below
- Medicare patients
- 299vs 19454% above
Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Mariyampillai'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.
Need commercial claims for Dr. Mariyampillai?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Mariyampillai and other internists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Matthew Mariyampillai treated 299 Medicare patients in 2024, average age 73
CMS counts 299 Medicare patients who saw Dr. Mariyampillai in 2024. The largest group is 65 to 74, with 135 patients. 75% of them have arthritis, and 74% have high cholesterol. 20% are also on Medicaid. Their average risk score is 1.25, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Mariyampillai's median patient age at 63, with 53% women.
Dr. Mariyampillai's Medicare patients by age, 2024
Dr. Mariyampillai's Medicare patients by sex, 2024
- Women19766%
- Men10234%
Chronic conditions among Dr. Mariyampillai's Medicare patients, 2024
- Arthritis75%
- High cholesterol74%
- High blood pressure70%
- Anxiety37%
- Mood disorders33%
- Depression29%
- Osteoporosis27%
- Ischemic heart disease23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Mariyampillai's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women53%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Matthew Mariyampillai takes part in Medicare
Dr. Mariyampillai accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Matthew Mariyampillai received $36 in industry payments in 2024
CMS Open Payments shows 1 general payment to Dr. Mariyampillai from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. Inari Medical, Inc. paid the most, $36.
Companies that paid Dr. Mariyampillai the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Matthew Mariyampillai graduated from Virginia Commonwealth University, School of Medicine
Dr. Mariyampillai graduated from Virginia Commonwealth University, School of Medicine in 2019.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Matthew Mariyampillai'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Matthew Mariyampillai
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. Matthew Mariyampillai's NPI number?
Dr. Matthew Mariyampillai's NPI number is 1578123485. It was assigned on June 13, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Matthew Mariyampillai?
Dr. Matthew Mariyampillai is an internist in Mendon, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Matthew Mariyampillai practice?
Dr. Mariyampillai practices at 55 North Ave, Mendon, MA 01756. Dr. Mariyampillai's primary practice is Umass Memorial Medical Center in Mendon, Massachusetts. Dmand AI also links Dr. Mariyampillai to 3 hospitals and 3 medical groups.
What is Dr. Matthew Mariyampillai's office phone number?
The practice phone on file for Dr. Mariyampillai is (508) 334-1000.
What is Dr. Matthew Mariyampillai's medical license number?
Dr. Mariyampillai holds Pennsylvania license MT218892, one of the licenses on file in 2 states.
Which states has Dr. Matthew Mariyampillai been licensed in?
Dmand AI has state licenses on file for Dr. Mariyampillai in Pennsylvania and Massachusetts.
Which hospitals is Dr. Matthew Mariyampillai affiliated with?
Dr. Mariyampillai is affiliated with UMass Memorial Medical Center - University Campus. Dmand AI links Dr. Mariyampillai to 3 more hospitals.
What medical group is Dr. Matthew Mariyampillai part of?
Dr. Mariyampillai is linked to UMass Memorial Medical Group. Dmand AI links Dr. Mariyampillai to 3 more medical groups.
Does Dr. Matthew Mariyampillai accept Medicare?
Yes. CMS data shows Dr. Mariyampillai billed Medicare for 195 services in 2024, and Dr. Mariyampillai accepts Medicare assignment.
How many Medicare patients does Dr. Matthew Mariyampillai see?
CMS counts 299 Medicare patients who saw Dr. Mariyampillai in 2024, with an average age of 73.
Show 4 more questionsShow fewer questions
What services does Dr. Matthew Mariyampillai bill to Medicare?
In 2024, Dr. Mariyampillai's most billed Medicare services were diagnostic imaging (72100), diagnostic imaging (73030) and diagnostic imaging (73502).
Where did Dr. Matthew Mariyampillai go to medical school?
Dr. Mariyampillai graduated from Virginia Commonwealth University, School of Medicine in 2019.
Has Dr. Matthew Mariyampillai received payments from drug or device companies?
CMS Open Payments shows $36 in general payments to Dr. Mariyampillai from 1 company from 2024 to 2024. The largest total came from Inari Medical, Inc.
How long has Dr. Matthew Mariyampillai been practicing?
Dr. Mariyampillai graduated from medical school in 2019, 7 years ago.
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