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Dr. Korilyn Sauser Zachrison, MD, MS
NPI1396901914PAC ID9032368246
- Medicare services, 2024
- 191
- Medicare patients, 2024
- 216
- Publications
- 1
- Hospital affiliations
- 1
- Industry payments
- $2,876
- Practice address
- 55 Fruit Street, Boston, MA 02114
- Practice phone
- Call (617) 726-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Zachrison'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.
Dr. Korilyn Sauser Zachrison is an emergency medicine physician in Boston, Massachusetts
Dr. Zachrison practices at Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham.
Dr. Zachrison's NPI, 1396901914, was assigned on August 3, 2008. Dr. Zachrison holds Massachusetts license 258693.
NPI and contact details
- NPI
- 1396901914NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9032368246
- NPI enumeration date
- August 3, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (617) 726-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Korilyn Sauser Zachrison practices at Massachusetts General Hospital in Boston, Massachusetts
Dr. Zachrison's primary practice is Massachusetts General Hospital, at 55 Fruit Street, Boston, MA 02114 in Suffolk County. The practice phone is (617) 726-2000.
- Massachusetts General Hospital55 Fruit Street, Boston, MA 02114 · Suffolk CountyPhone(617) 726-2000
Source: Dmand AI Affiliation Data
Dr. Korilyn Sauser Zachrison is affiliated with 2 sites of care and 2 medical groups
Dr. Zachrison's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. The medical group on file is Massachusetts General Physicians Organization (MGPO). Dmand AI also links Dr. Zachrison to 1 more community health center and 1 medical group, each named with a free account.
Massachusetts General Physicians Organization (MGPO)1 community health centerName with a free account1 medical groupName with a free account
See all 4 affiliations for Dr. ZachrisonSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Korilyn Sauser Zachrison's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zachrison practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Massachusetts General Hospital | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Korilyn Sauser Zachrison is one of 1,483 emergency medicine physicians in Massachusetts
Emergency medicine is Dr. Zachrison's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dmand AI has Dr. Zachrison's licenses on file in 3 states: Massachusetts, Illinois and Michigan.
Specialties and state licenses
- Emergency medicine, MassachusettsPrimary
- Illinois license
- Michigan license
Emergency medicine physicians near Dr. Zachrison
Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
1,483emergency medicine physicians in Massachusetts330emergency medicine physicians in Boston78emergency medicine physicians at Massachusetts General Hospital
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Korilyn Sauser Zachrison billed Medicare for 191 services in 2024
CMS data shows 191 Medicare services from Dr. Zachrison across 5 procedure codes in 2024, for 216 Medicare patients. Medicare paid $25,361 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024191
Medicare patients216
Paid by Medicare$25,361
Procedure codes5
Dr. Zachrison's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2822024: 19132%
- Tests and treatments
- 2023: 182024: 0100%
Dr. Zachrison compared with the Massachusetts median for emergency medicine physicians, 2024
- Dr. Zachrison
- Massachusetts median
- Medicare services
- 191vs 34144% below
- Medicare patients
- 216vs 33736% below
Medians across 1,477 emergency medicine physicians in Massachusetts with Dmand AI profiles that report each measure.
Dr. Zachrison'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.
Need commercial claims for Dr. Zachrison?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Zachrison and other emergency medicine physicians in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Korilyn Sauser Zachrison treated 216 Medicare patients in 2024, average age 73
CMS counts 216 Medicare patients who saw Dr. Zachrison in 2024. The largest group is 65 to 74, with 73 patients. 75% of them have high blood pressure, and 72% have high cholesterol. 41% are also on Medicaid. Their average risk score is 2.43, 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. Zachrison's median patient age at 58, with 45% women.
Medicare patients, 2024216
Average age73
Average risk score2.43
Also on Medicaid41%
Dr. Zachrison's Medicare patients by age, 2024
Dr. Zachrison's Medicare patients by sex, 2024
- Women10950%
- Men10750%
Chronic conditions among Dr. Zachrison's Medicare patients, 2024
- High blood pressure75%
- High cholesterol72%
- Anxiety54%
- Arthritis52%
- Ischemic heart disease51%
- Mood disorders50%
- Depression44%
- Chronic kidney disease40%
Share of Medicare patients with each condition. A patient can have several.
Dr. Zachrison's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women45%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Korilyn Sauser Zachrison takes part in Medicare
Dr. Zachrison 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
Find emergency medicine physicians like Dr. Zachrison by procedure volume and prescribing
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Dr. Korilyn Sauser Zachrison has 1 publication on record
Dmand AI links 1 paper to Dr. Zachrison in 2023. Dr. Zachrison's most frequent co-author is Lee H. Schwamm, MD.
Papers1
Dr. Zachrison's most frequent co-authors
Recent publications by Dr. Zachrison
See who Dr. Zachrison researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Zachrison works with, so you can find a warm path to the right emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Korilyn Sauser Zachrison received $2,876 in industry payments from 2019 to 2022
CMS Open Payments shows 9 general payments to Dr. Zachrison from 2 drug and device companies from 2019 to 2022. Honoraria make up the largest share, 87% of the total. Portola Pharmaceuticals, LLC paid the most, $2,758.
General payments to Dr. Zachrison by program year, 2019 to 2022
General payments to Dr. Zachrison by kind, 2019 to 2022
$2.9Kin total
- Honoraria$2,50087%
- Food and beverage$27610%
- Travel and lodging$1003%
Companies that paid Dr. Zachrison the most, 2019 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Korilyn Sauser Zachrison'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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 Dr. Korilyn Sauser Zachrison
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. Korilyn Sauser Zachrison's NPI number?
Dr. Korilyn Sauser Zachrison's NPI number is 1396901914. It was assigned on August 3, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Korilyn Sauser Zachrison?
Dr. Korilyn Sauser Zachrison is an emergency medicine physician in Boston, Massachusetts. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Korilyn Sauser Zachrison practice?
Dr. Zachrison practices at 55 Fruit Street, Boston, MA 02114. Dr. Zachrison's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Zachrison to 1 community health center and 1 medical group.
What is Dr. Korilyn Sauser Zachrison's office phone number?
The practice phone on file for Dr. Zachrison is (617) 726-2000.
What is Dr. Korilyn Sauser Zachrison's medical license number?
Dr. Zachrison holds Massachusetts license 258693, one of the licenses on file in 3 states.
Which states has Dr. Korilyn Sauser Zachrison been licensed in?
Dmand AI has state licenses on file for Dr. Zachrison in Massachusetts, Illinois and Michigan.
Which hospitals is Dr. Korilyn Sauser Zachrison affiliated with?
Dr. Zachrison practices at Massachusetts General Hospital in Boston, Massachusetts.
What medical group is Dr. Korilyn Sauser Zachrison part of?
Dr. Zachrison is linked to Massachusetts General Physicians Organization (MGPO). Dmand AI links Dr. Zachrison to 1 more medical group.
Does Dr. Korilyn Sauser Zachrison accept Medicare?
Yes. CMS data shows Dr. Zachrison billed Medicare for 191 services in 2024, and Dr. Zachrison accepts Medicare assignment.
How many Medicare patients does Dr. Korilyn Sauser Zachrison see?
CMS counts 216 Medicare patients who saw Dr. Zachrison in 2024, with an average age of 73.
Show 5 more questionsShow fewer questions
What services does Dr. Korilyn Sauser Zachrison bill to Medicare?
In 2024, Dr. Zachrison's most billed Medicare services were emergency department visit (99285), critical care (99291) and emergency department visit (99284).
Has Dr. Korilyn Sauser Zachrison received payments from drug or device companies?
CMS Open Payments shows $2,876 in general payments to Dr. Zachrison from 2 companies from 2019 to 2022. The largest total came from Portola Pharmaceuticals, LLC.
How long has Dr. Korilyn Sauser Zachrison been practicing?
Dr. Zachrison graduated from medical school in 2008, 18 years ago.
Does Dr. Korilyn Sauser Zachrison do research?
Dmand AI links 1 publication to Dr. Zachrison.
Who does Dr. Korilyn Sauser Zachrison publish with?
Dr. Zachrison's most frequent co-authors are Lee H. Schwamm, MD (1 shared paper).
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