Joymon K. Sebastian, NP
- Medicare patients, 2024
- 325
- Part D claims, 2024
- 7,696
- Hospital affiliations
- 3
- Industry payments
- $81
- Medical groups
- 2
- Practice address
- 400 Blue Hill Dr, Westwood, MA 02090
- Practice phone
- Call (617) 754-0730
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Medical Care of Boston Management Corporation
Westwood, Massachusetts
Find Joymon Sebastian'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.
Joymon K. Sebastian is a family nurse practitioner in Westwood, Massachusetts
Joymon Sebastian practices at Medical Care of Boston Management Corporation in Westwood, Massachusetts.
Joymon Sebastian's NPI, 1437668241, was assigned on September 25, 2017. Joymon Sebastian holds Massachusetts license 266755.
- NPI
- 1437668241NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0244599371
- NPI enumeration date
- September 25, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (617) 754-0730
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Joymon K. Sebastian practices at Medical Care of Boston Management Corporation in Westwood, Massachusetts
Joymon Sebastian's primary practice is Medical Care of Boston Management Corporation, at 400 Blue Hill Dr, Westwood, MA 02090 in Norfolk County. The practice phone is (617) 754-0730.
- Medical Care of Boston Management Corporation400 Blue Hill Dr, Westwood, MA 02090 · Norfolk CountyPhone(617) 754-0730
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Joymon K. Sebastian is affiliated with 6 sites of care and 2 medical groups
Joymon Sebastian's primary practice is Medical Care of Boston Management Corporation in Westwood, Massachusetts. Joymon Sebastian is also affiliated with Charlton Memorial Hospital. The medical group on file is Steward Medical Group. Dmand AI also links Joymon Sebastian to 2 more hospitals, 2 group practices and clinics and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Joymon K. Sebastian's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Joymon Sebastian practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Medical Care of Boston Management Corporation | Available with a free account |
| +5 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Joymon K. Sebastian is one of 3,644 family nurse practitioners in Massachusetts
Family is Joymon Sebastian's primary specialty in the NPI Registry, under taxonomy code 363LF0000X. Joymon Sebastian is licensed in Massachusetts.
Specialties and state licenses
- Family nurse practitioner, MassachusettsPrimary
Family nurse practitioners near Joymon Sebastian
Counts of family nurse practitioners 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
Joymon K. Sebastian treated 325 Medicare patients in 2024, average age 73
CMS counts 325 Medicare patients who saw Joymon Sebastian in 2024. The largest group is 65 to 74, with 144 patients. 75% of them have diabetes, and 75% have high blood pressure. 43% are also on Medicaid. Their average risk score is 1.58, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Joymon Sebastian's median patient age at 62, with 42% women.
Joymon Sebastian's Medicare patients by age, 2024
Joymon Sebastian's Medicare patients by sex, 2024
- Women16751%
- Men15849%
Chronic conditions among Joymon Sebastian's Medicare patients, 2024
- Diabetes75%
- High blood pressure75%
- High cholesterol75%
- Arthritis46%
- Chronic kidney disease40%
- Ischemic heart disease40%
- Anxiety34%
- Mood disorders34%
Share of Medicare patients with each condition. A patient can have several.
Joymon Sebastian's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women42%
- Men57%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Joymon K. Sebastian wrote 7,696 Medicare Part D claims in 2024
In 2024, Joymon Sebastian wrote 7,696 Medicare Part D claims for 770 patients. 33% of them were for generic drugs.
Joymon Sebastian's Part D claims by kind of drug, 2024
- Generic2,541 claims33%
- Brand-name4,449 claims58%
- Other706 claims9%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Joymon K. Sebastian takes part in Medicare
Joymon Sebastian 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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Joymon K. Sebastian received $81 in industry payments in 2025
CMS Open Payments shows 1 general payment to Joymon Sebastian from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Sequel Med Tech, LLC paid the most, $81.
Companies that paid Joymon Sebastian 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 Joymon K. Sebastian'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 Data |
| 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 (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) |
| 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 Joymon K. Sebastian
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Joymon K. Sebastian's NPI number?
Joymon K. Sebastian's NPI number is 1437668241. It was assigned on September 25, 2017, and it is active in the NPI Registry.
What does Joymon K. Sebastian specialize in?
Joymon K. Sebastian is a family nurse practitioner in Westwood, Massachusetts. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).
Where does Joymon K. Sebastian practice?
Joymon Sebastian practices at 400 Blue Hill Dr, Westwood, MA 02090. Joymon Sebastian's primary practice is Medical Care of Boston Management Corporation in Westwood, Massachusetts. Dmand AI also links Joymon Sebastian to 2 hospitals, 2 group practices and clinics and 1 medical group.
What is Joymon K. Sebastian's office phone number?
The practice phone on file for Joymon Sebastian is (617) 754-0730.
What is Joymon K. Sebastian's medical license number?
Joymon Sebastian holds Massachusetts license 266755.
Which hospitals is Joymon K. Sebastian affiliated with?
Joymon Sebastian is affiliated with Charlton Memorial Hospital. Dmand AI links Joymon Sebastian to 2 more hospitals.
What medical group is Joymon K. Sebastian part of?
Joymon Sebastian is linked to Steward Medical Group. Dmand AI links Joymon Sebastian to 1 more medical group.
Does Joymon K. Sebastian accept Medicare?
Yes. CMS lists Joymon Sebastian as accepting Medicare assignment.
How many Medicare patients does Joymon K. Sebastian see?
CMS counts 325 Medicare patients who saw Joymon Sebastian in 2024, with an average age of 73.
Has Joymon K. Sebastian received payments from drug or device companies?
CMS Open Payments shows $81 in general payments to Joymon Sebastian from 1 company from 2025 to 2025. The largest total came from Sequel Med Tech, LLC.
How long has Joymon K. Sebastian been practicing?
Joymon Sebastian graduated from medical school in 2017, 9 years ago.
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