Dr. Alyssa N. Dayan, MD
- Medicare services, 2024
- 316
- Medicare patients, 2024
- 325
- Part D claims, 2024
- 56
- MIPS score, 2024
- 85
- Hospital affiliations
- 1
- Practice address
- 2650 Ridge Ave, Evanston, IL 60201
- Practice phone
- Call (847) 570-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Dayan's professional email, personal email and mobile number
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Dr. Alyssa N. Dayan is an emergency medicine physician in Evanston, Illinois
Dr. Dayan practices at Evanston Hospital in Evanston, Illinois, part of Endeavor Health.
Dr. Dayan's NPI, 1871547604, was assigned on May 19, 2006. Dr. Dayan graduated from Chicago College of Medicine and Surgery in 2002. Dr. Dayan holds Illinois license 036-113300.
- NPI
- 1871547604NPI Registry (opens in a new tab)
- NPI enumeration date
- May 19, 2006
- NPI status
- Active
- Practice phone
- (847) 570-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Alyssa N. Dayan practices at Evanston Hospital in Evanston, Illinois
Dr. Dayan's primary practice is Evanston Hospital, at 2650 Ridge Ave, Evanston, IL 60201 in Cook County. The practice phone is (847) 570-2000.
- Evanston Hospital2650 Ridge Ave, Evanston, IL 60201 · Cook CountyPhone(847) 570-2000
Source: Dmand AI Affiliation Data
Dr. Alyssa N. Dayan is affiliated with 1 site of care and 1 medical group
Dr. Dayan's primary practice is Evanston Hospital in Evanston, Illinois, part of Endeavor Health. The medical group on file is Endeavor Health Medical Group.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Alyssa N. Dayan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Dayan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Evanston Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Alyssa N. Dayan is one of 2,385 emergency medicine physicians in Illinois
Emergency medicine is Dr. Dayan's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Dayan is licensed in Illinois.
Specialties and state licenses
- Emergency medicine, IllinoisPrimary
Emergency medicine physicians near Dr. Dayan
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. Alyssa N. Dayan billed Medicare for 316 services in 2024
CMS data shows 316 Medicare services from Dr. Dayan across 3 procedure codes in 2024, for 325 Medicare patients. Medicare paid $43,029 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Dayan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2992024: 3166%
Dr. Dayan compared with the Illinois median for emergency medicine physicians, 2024
- Dr. Dayan
- Illinois median
- Medicare services
- 316vs 27415% above
- Medicare patients
- 325vs 27319% above
- Part D claims
- 14vs 4569% below
Medians across 2,281 emergency medicine physicians in Illinois with Dmand AI profiles that report each measure.
Dr. Dayan'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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Alyssa N. Dayan treated 325 Medicare patients in 2024, average age 80
CMS counts 325 Medicare patients who saw Dr. Dayan in 2024. The largest group is 75 to 84, with 122 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 21% are also on Medicaid. Their average risk score is 2.22, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Dayan's median patient age at 55, with 59% women.
Dr. Dayan's Medicare patients by age, 2024
Dr. Dayan's Medicare patients by sex, 2024
- Women18055%
- Men14545%
Chronic conditions among Dr. Dayan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis66%
- Chronic kidney disease41%
- Ischemic heart disease41%
- Mood disorders41%
- Diabetes38%
- Depression37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Dayan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 55
Patient panel by sex, all payers
- Women59%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Alyssa N. Dayan wrote 56 Medicare Part D claims in 2024
In 2024, Dr. Dayan wrote 56 Medicare Part D claims for 42 patients. 100% of them were for generic drugs. CMS names the drug for 14 of them, across 1 drug with 11 or more claims each, at $63 in total drug cost.
Dr. Dayan's most prescribed drugs by claims, 2017
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. Dayan's Part D claims, 2024
- Opioids20%11 of 56 claims
- Antibiotics20%11 of 56 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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. Alyssa N. Dayan scored 85 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 85 out of 100 for Dr. Dayan for performance year 2024, reported as part of a group.
Dr. Dayan's MIPS scores, performance year 2024
- 85of 100Final score
- 75.9of 100Quality
- 99of 100Promoting Interoperability
- 40of 100Improvement Activities
- 75of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Alyssa N. Dayan received $14 in industry payments in 2018
CMS Open Payments shows 1 general payment to Dr. Dayan from 1 drug or device company in 2018. Food and beverage make up the largest share, 100% of the total. Covidien LP paid the most, $14.
Companies that paid Dr. Dayan the most, 2018 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Alyssa N. Dayan graduated from Chicago College of Medicine and Surgery
Dr. Dayan graduated from Chicago College of Medicine and Surgery in 2002.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Alyssa N. Dayan'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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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 | Clinician Public Reporting: Overall MIPS Performance (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. Alyssa N. Dayan
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. Alyssa N. Dayan's NPI number?
Dr. Alyssa N. Dayan's NPI number is 1871547604. It was assigned on May 19, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Alyssa N. Dayan?
Dr. Alyssa N. Dayan is an emergency medicine physician in Evanston, Illinois. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Alyssa N. Dayan practice?
Dr. Dayan practices at 2650 Ridge Ave, Evanston, IL 60201. Dr. Dayan's primary practice is Evanston Hospital in Evanston, Illinois, part of Endeavor Health.
What is Dr. Alyssa N. Dayan's office phone number?
The practice phone on file for Dr. Dayan is (847) 570-2000.
What is Dr. Alyssa N. Dayan's medical license number?
Dr. Dayan holds Illinois license 036-113300.
Which hospitals is Dr. Alyssa N. Dayan affiliated with?
Dr. Dayan practices at Evanston Hospital in Evanston, Illinois.
What medical group is Dr. Alyssa N. Dayan part of?
Dr. Dayan is linked to Endeavor Health Medical Group.
Does Dr. Alyssa N. Dayan accept Medicare?
Yes. CMS data shows Dr. Dayan billed Medicare for 316 services in 2024.
What is Dr. Alyssa N. Dayan's MIPS score?
Dr. Dayan's MIPS final score for performance year 2024 is 85 out of 100, reported as part of a group.
How many Medicare patients does Dr. Alyssa N. Dayan see?
CMS counts 325 Medicare patients who saw Dr. Dayan in 2024, with an average age of 80.
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What services does Dr. Alyssa N. Dayan bill to Medicare?
In 2024, Dr. Dayan's most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and emergency department visit (99283).
Where did Dr. Alyssa N. Dayan go to medical school?
Dr. Dayan graduated from Chicago College of Medicine and Surgery in 2002.
What drugs does Dr. Alyssa N. Dayan prescribe most?
In 2017 Medicare Part D data, Dr. Dayan's most prescribed drugs by claims were Hydrocodone-Acetaminophen.
Has Dr. Alyssa N. Dayan received payments from drug or device companies?
CMS Open Payments shows $14 in general payments to Dr. Dayan from 1 company from 2018 to 2018. The largest total came from Covidien LP.
How long has Dr. Alyssa N. Dayan been practicing?
Dr. Dayan graduated from medical school in 2002, 24 years ago.
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