Lisa A. Sebastyn, PA-C
- Medicare patients, 2024
- 757
- Part D claims, 2024
- 12
- Hospital affiliations
- 5
- Industry payments
- $20
- Medical group
- 1
- Practice address
- 759 Chestnut Street, Springfield, MA 01199
- Practice phone
- Call (413) 794-0000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Lisa Sebastyn'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.
Lisa A. Sebastyn is a physician assistant in Springfield, Massachusetts
Lisa Sebastyn practices at Baystate Medical Center in Springfield, Massachusetts, part of Baystate Health.
Lisa Sebastyn's NPI, 1811083371, was assigned on October 4, 2006. Lisa Sebastyn holds Massachusetts license 972.
- NPI
- 1811083371NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9234148305
- NPI enumeration date
- October 4, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (413) 794-0000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Lisa A. Sebastyn practices at Baystate Medical Center in Springfield, Massachusetts
Lisa Sebastyn's primary practice is Baystate Medical Center, at 759 Chestnut Street, Springfield, MA 01199 in Hampden County. The practice phone is (413) 794-0000.
- Baystate Medical Center759 Chestnut Street, Springfield, MA 01199 · Hampden CountyPhone(413) 794-0000
Source: Dmand AI Affiliation Data
Lisa A. Sebastyn is affiliated with 6 sites of care and 1 medical group
Lisa Sebastyn's primary practice is Baystate Medical Center in Springfield, Massachusetts, part of Baystate Health. Lisa Sebastyn is also affiliated with Mercy Medical Center. The medical group on file is Baystate Medical Practices. Dmand AI also links Lisa Sebastyn to 3 more hospitals and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Lisa A. Sebastyn's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Lisa Sebastyn practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Baystate Medical Center | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Baystate Health and 6.2K+ hospitals, with verified contacts in the same login.
Lisa A. Sebastyn is one of 725 physician assistants in Massachusetts
Medical is Lisa Sebastyn's primary specialty in the NPI Registry, under taxonomy code 363AM0700X. Lisa Sebastyn is licensed in Massachusetts.
Specialties and state licenses
- Medical physician assistant, MassachusettsPrimary
Physician assistants near Lisa Sebastyn
Counts of physician assistants 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
Lisa A. Sebastyn treated 757 Medicare patients in 2024, average age 76
CMS counts 757 Medicare patients who saw Lisa Sebastyn in 2024. The largest group is 75 to 84, with 303 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 30% are also on Medicaid. Their average risk score is 1.90, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Lisa Sebastyn's median patient age at 75, with 40% women.
Lisa Sebastyn's Medicare patients by age, 2024
Lisa Sebastyn's Medicare patients by sex, 2024
- Women30440%
- Men45360%
Chronic conditions among Lisa Sebastyn's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Heart failure54%
- Atrial fibrillation50%
- Ischemic heart disease50%
- Arthritis48%
- Chronic kidney disease41%
- Diabetes38%
Share of Medicare patients with each condition. A patient can have several.
Lisa Sebastyn's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women40%
- Men60%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Lisa A. Sebastyn wrote 12 Medicare Part D claims in 2024
In 2024, Lisa Sebastyn wrote 12 Medicare Part D claims.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Lisa A. Sebastyn takes part in Medicare
Lisa Sebastyn 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)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Lisa A. Sebastyn received $20 in industry payments in 2025
CMS Open Payments shows 1 general payment to Lisa Sebastyn from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Abbott Laboratories paid the most, $20.
Companies that paid Lisa Sebastyn 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 Lisa A. Sebastyn'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 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 Lisa A. Sebastyn
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Lisa A. Sebastyn's NPI number?
Lisa A. Sebastyn's NPI number is 1811083371. It was assigned on October 4, 2006, and it is active in the NPI Registry.
What does Lisa A. Sebastyn specialize in?
Lisa A. Sebastyn is a physician assistant in Springfield, Massachusetts. The primary specialty in the NPI Registry is Medical Physician Assistant (taxonomy code 363AM0700X).
Where does Lisa A. Sebastyn practice?
Lisa Sebastyn practices at 759 Chestnut Street, Springfield, MA 01199. Lisa Sebastyn's primary practice is Baystate Medical Center in Springfield, Massachusetts, part of Baystate Health. Dmand AI also links Lisa Sebastyn to 3 hospitals and 1 group practice or clinic.
What is Lisa A. Sebastyn's office phone number?
The practice phone on file for Lisa Sebastyn is (413) 794-0000.
What is Lisa A. Sebastyn's medical license number?
Lisa Sebastyn holds Massachusetts license 972.
Which hospitals is Lisa A. Sebastyn affiliated with?
Lisa Sebastyn practices at Baystate Medical Center in Springfield, Massachusetts. Lisa Sebastyn is also affiliated with Mercy Medical Center. Dmand AI links Lisa Sebastyn to 3 more hospitals.
What medical group is Lisa A. Sebastyn part of?
Lisa Sebastyn is linked to Baystate Medical Practices.
Does Lisa A. Sebastyn accept Medicare?
Yes. CMS lists Lisa Sebastyn as accepting Medicare assignment.
How many Medicare patients does Lisa A. Sebastyn see?
CMS counts 757 Medicare patients who saw Lisa Sebastyn in 2024, with an average age of 76.
Has Lisa A. Sebastyn received payments from drug or device companies?
CMS Open Payments shows $20 in general payments to Lisa Sebastyn from 1 company from 2025 to 2025. The largest total came from Abbott Laboratories.
How long has Lisa A. Sebastyn been practicing?
Lisa Sebastyn's NPI was assigned in 2006.
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