Dr. Narissa Marie Joyner, MD
- Medicare services, 2022
- 219
- Part D claims, 2024
- 36
- MIPS score, 2024
- 93
- Hospital affiliations
- 2
- Medical groups
- 6
- Practice address
- 400 East Main Street, Mount Kisco, NY 10549
- Practice phone
- Call (914) 666-1200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Narissa Marie Joyner is an emergency medicine physician in Mount Kisco, New York
Dr. Joyner practices at Northern Westchester Hospital in Mount Kisco, New York, part of Northwell Health.
Dr. Joyner's NPI, 1548546070, was assigned on October 28, 2011. Dr. Joyner holds New York license 272938.
- NPI
- 1548546070NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2567684525
- NPI enumeration date
- October 28, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (914) 666-1200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Narissa Marie Joyner practices at Northern Westchester Hospital in Mount Kisco, New York
Dr. Joyner's primary practice is Northern Westchester Hospital, at 400 East Main Street, Mount Kisco, NY 10549 in Westchester County. The practice phone is (914) 666-1200.
- Northern Westchester Hospital400 East Main Street, Mount Kisco, NY 10549 · Westchester CountyPhone(914) 666-1200
Source: Dmand AI Affiliation Data
Dr. Narissa Marie Joyner is affiliated with 3 sites of care and 6 medical groups
Dr. Joyner's primary practice is Northern Westchester Hospital in Mount Kisco, New York, part of Northwell Health. Dr. Joyner is also affiliated with Geisinger Wyoming Valley Medical Center. The medical group on file is Northwell Health Physician Partners Cardiology at Great Neck. Dmand AI also links Dr. Joyner to 5 more medical groups 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 Dr. Narissa Marie Joyner's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Joyner practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northern Westchester Hospital | Available with a free account |
| +2 more sites and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Narissa Marie Joyner is one of 3,709 emergency medicine physicians in New York
Emergency medicine is Dr. Joyner's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Joyner is licensed in New York.
Specialties and state licenses
- Emergency medicine, New YorkPrimary
Emergency medicine physicians near Dr. Joyner
Counts of emergency medicine physicians 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. Narissa Marie Joyner billed Medicare for 219 services in 2022
CMS data shows 219 Medicare services from Dr. Joyner across 4 procedure codes in 2022. Medicare paid $23,715 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Joyner's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 4662022: 16964%
- Tests and treatments
- 2021: 2322022: 5078%
- Imaging
- 2021: 242022: 0100%
Dr. Joyner compared with the New York median for emergency medicine physicians, 2022
- Dr. Joyner
- New York median
- Medicare services
- 219vs 219Close to median
- Part D claims
- 13vs 2955% below
Medians across 3,510 emergency medicine physicians in New York with Dmand AI profiles that report each measure.
Dr. Joyner's most billed Medicare procedure codes, 2022
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. Narissa Marie Joyner's patients have a median age of 62
Across all payers, Dmand AI patient panel data puts Dr. Joyner's median patient age at 62, with 44% women.
Dr. Joyner'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
- Women44%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. Narissa Marie Joyner wrote 36 Medicare Part D claims in 2024
In 2024, Dr. Joyner wrote 36 Medicare Part D claims for 28 patients. 94% of them were for generic drugs. CMS names the drug for 13 of them, across 1 drug with 11 or more claims each, at $286 in total drug cost. In 2019, CMS named 33 claims across 2 drugs.
Dr. Joyner's Part D claims by kind of drug, 2024
- Generic34 claims94%
- Brand-name and other2 claims6%
Dr. Joyner's most prescribed drugs by claims, 2021
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. Joyner's Part D claims, 2024
- Antibiotics47%17 of 36 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, 2019 to 2021
- 2019
- 2021
- Claims for drugs CMS names
- 2019: 332021: 1361%
Drugs named by CMS: 1 in 2021, 2 in 2019.
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. Narissa Marie Joyner scored 93 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 93 out of 100 for Dr. Joyner for performance year 2024, reported through an alternative payment model (APM). Dr. Joyner accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Joyner's MIPS scores, performance year 2024
- 93of 100Final score
- 79.8of 100Quality
- 89of 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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Sources for Dr. Narissa Marie Joyner'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 Data |
| 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) |
| 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. Narissa Marie Joyner
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What is Dr. Narissa Marie Joyner's NPI number?
Dr. Narissa Marie Joyner's NPI number is 1548546070. It was assigned on October 28, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. Narissa Marie Joyner?
Dr. Narissa Marie Joyner is an emergency medicine physician in Mount Kisco, New York. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Narissa Marie Joyner practice?
Dr. Joyner practices at 400 East Main Street, Mount Kisco, NY 10549. Dr. Joyner's primary practice is Northern Westchester Hospital in Mount Kisco, New York, part of Northwell Health. Dmand AI also links Dr. Joyner to 5 medical groups and 1 group practice or clinic.
What is Dr. Narissa Marie Joyner's office phone number?
The practice phone on file for Dr. Joyner is (914) 666-1200.
What is Dr. Narissa Marie Joyner's medical license number?
Dr. Joyner holds New York license 272938.
Which hospitals is Dr. Narissa Marie Joyner affiliated with?
Dr. Joyner practices at Northern Westchester Hospital in Mount Kisco, New York. Dr. Joyner is also affiliated with Geisinger Wyoming Valley Medical Center.
What medical group is Dr. Narissa Marie Joyner part of?
Dr. Joyner is linked to Northwell Health Physician Partners Cardiology at Great Neck. Dmand AI links Dr. Joyner to 5 more medical groups.
Does Dr. Narissa Marie Joyner accept Medicare?
Yes. CMS data shows Dr. Joyner billed Medicare for 219 services in 2022, and Dr. Joyner accepts Medicare assignment.
What is Dr. Narissa Marie Joyner's MIPS score?
Dr. Joyner's MIPS final score for performance year 2024 is 93 out of 100, reported through an alternative payment model (APM).
What services does Dr. Narissa Marie Joyner bill to Medicare?
In 2022, Dr. Joyner's most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and heart test or procedure (93010).
What drugs does Dr. Narissa Marie Joyner prescribe most?
In 2021 Medicare Part D data, Dr. Joyner's most prescribed drugs by claims were Cefuroxime.
How long has Dr. Narissa Marie Joyner been practicing?
Dr. Joyner graduated from medical school in 2011, 15 years ago.
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