Allyn Chesney Sisson, FNP
- Medicare patients, 2024
- 1,017
- Part D claims, 2024
- 4,416
- MIPS score, 2024
- 75
- Hospital affiliations
- 1
- Industry payments
- $400
- Practice address
- 4909 Great River Dr, Meridian, MS 39305
- Practice phone
- Call (985) 876-0300
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Cardiovascular Institute of the South
Meridian, Mississippi
Find Allyn Sisson'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.
Allyn Chesney Sisson is a family nurse practitioner in Meridian, Mississippi
Allyn Sisson practices at Cardiovascular Institute of the South in Meridian, Mississippi.
Allyn Sisson's NPI, 1205589157, was assigned on February 1, 2022. Allyn Sisson holds Mississippi license 905115.
- NPI
- 1205589157NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4587059944
- NPI enumeration date
- February 1, 2022
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (985) 876-0300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 31
- Medical school graduation
- 2021
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Allyn Chesney Sisson practices at Cardiovascular Institute of the South in Meridian, Mississippi
Allyn Sisson's primary practice is Cardiovascular Institute of the South, at 4909 Great River Dr, Meridian, MS 39305 in Lauderdale County. The practice phone is (985) 876-0300.
- Cardiovascular Institute of the South4909 Great River Dr, Meridian, MS 39305 · Lauderdale CountyPhone(985) 876-0300
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Allyn Chesney Sisson is affiliated with 3 sites of care and 1 medical group
Allyn Sisson's primary practice is Cardiovascular Institute of the South in Meridian, Mississippi. Allyn Sisson is also affiliated with Baptist Anderson Regional Medical Center. The medical group on file is Cardiovascular Institute of the South. Dmand AI also links Allyn Sisson to 1 more group practice or clinic, 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 Allyn Chesney Sisson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Allyn Sisson practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Cardiovascular Institute of the South | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Allyn Chesney Sisson is one of 2,824 family nurse practitioners in Mississippi
Family is Allyn Sisson's primary specialty in the NPI Registry, under taxonomy code 363LF0000X. Allyn Sisson is licensed in Mississippi.
Specialties and state licenses
- Family nurse practitioner, MississippiPrimary
Family nurse practitioners near Allyn Sisson
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
Allyn Chesney Sisson treated 1,017 Medicare patients in 2024, average age 76
CMS counts 1,017 Medicare patients who saw Allyn Sisson in 2024. The largest group is 75 to 84, with 417 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 16% are also on Medicaid. Their average risk score is 1.59, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Allyn Sisson's median patient age at 72, with 54% women.
Allyn Sisson's Medicare patients by age, 2024
Allyn Sisson's Medicare patients by sex, 2024
- Women59458%
- Men42342%
Chronic conditions among Allyn Sisson's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis64%
- Ischemic heart disease52%
- Diabetes45%
- Atrial fibrillation40%
- Heart failure38%
- Chronic kidney disease36%
Share of Medicare patients with each condition. A patient can have several.
Allyn Sisson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women54%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Allyn Chesney Sisson wrote 4,416 Medicare Part D claims in 2024
In 2024, Allyn Sisson wrote 4,416 Medicare Part D claims for 1,074 patients. 87% of them were for generic drugs.
Allyn Sisson's Part D claims by kind of drug, 2024
- Generic3,841 claims87%
- Brand-name and other575 claims13%
Drug classes CMS tracks in Allyn Sisson's Part D claims, 2024
- Antibiotics0%15 of 4,416 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Allyn Chesney Sisson scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Allyn Sisson for performance year 2024, reported individually. Allyn Sisson accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
- MIPS final score, 2024
- 75 of 100
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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Allyn Chesney Sisson received $400 in industry payments in 2025
CMS Open Payments shows 19 general payments to Allyn Sisson from 8 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Medtronic, Inc. paid the most, $75.
Companies that paid Allyn Sisson 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 Allyn Chesney Sisson'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)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 Allyn Chesney Sisson
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Allyn Chesney Sisson's NPI number?
Allyn Chesney Sisson's NPI number is 1205589157. It was assigned on February 1, 2022, and it is active in the NPI Registry.
What does Allyn Chesney Sisson specialize in?
Allyn Chesney Sisson is a family nurse practitioner in Meridian, Mississippi. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).
Where does Allyn Chesney Sisson practice?
Allyn Sisson practices at 4909 Great River Dr, Meridian, MS 39305. Allyn Sisson's primary practice is Cardiovascular Institute of the South in Meridian, Mississippi. Dmand AI also links Allyn Sisson to 1 group practice or clinic.
What is Allyn Chesney Sisson's office phone number?
The practice phone on file for Allyn Sisson is (985) 876-0300.
What is Allyn Chesney Sisson's medical license number?
Allyn Sisson holds Mississippi license 905115.
Which hospitals is Allyn Chesney Sisson affiliated with?
Allyn Sisson is affiliated with Baptist Anderson Regional Medical Center.
What medical group is Allyn Chesney Sisson part of?
Allyn Sisson is linked to Cardiovascular Institute of the South.
Does Allyn Chesney Sisson accept Medicare?
Yes. CMS lists Allyn Sisson as accepting Medicare assignment.
What is Allyn Chesney Sisson's MIPS score?
Allyn Sisson's MIPS final score for performance year 2024 is 75 out of 100, reported individually.
How many Medicare patients does Allyn Chesney Sisson see?
CMS counts 1,017 Medicare patients who saw Allyn Sisson in 2024, with an average age of 76.
Has Allyn Chesney Sisson received payments from drug or device companies?
CMS Open Payments shows $400 in general payments to Allyn Sisson from 8 companies from 2025 to 2025. The largest total came from Medtronic, Inc.
How long has Allyn Chesney Sisson been practicing?
Allyn Sisson graduated from medical school in 2021, 5 years ago.
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