Sahar Nissim
- Medicare services, 2024
- 61
- Medicare patients, 2024
- 68
- Hospital affiliations
- 2
- Industry payments
- $1,006
- Medical groups
- 2
- Practice address
- 75 Francis Street, Boston, MA 02115
- Practice phone
- Call (617) 732-5500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Sahar Nissim's professional email, personal email and mobile number
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Sahar Nissim is a gastroenterologist in Boston, Massachusetts
Sahar Nissim practices at Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham.
Sahar Nissim's NPI, 1396944401, was assigned on July 18, 2007. Sahar Nissim graduated from Harvard Medical School in 2007. Sahar Nissim holds Massachusetts license 258952.
- NPI
- 1396944401NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5597903286
- NPI enumeration date
- July 18, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (617) 732-5500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Sahar Nissim practices at Brigham and Women's Hospital in Boston, Massachusetts
Sahar Nissim's primary practice is Brigham and Women's Hospital, at 75 Francis Street, Boston, MA 02115 in Suffolk County. The practice phone is (617) 732-5500.
- Brigham and Women's Hospital75 Francis Street, Boston, MA 02115 · Suffolk CountyPhone(617) 732-5500
Source: Dmand AI Affiliation Data
Sahar Nissim is affiliated with 3 sites of care and 2 medical groups
Sahar Nissim's primary practice is Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham. Sahar Nissim is also affiliated with Dana-Farber Cancer Institute. The medical group on file is Brigham and Women's Hospital. Dmand AI also links Sahar Nissim to 1 more hospital outpatient department and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Sahar Nissim's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Sahar Nissim practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Brigham and Women's Hospital | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Sahar Nissim is one of 597 gastroenterologists in Massachusetts
Gastroenterology is Sahar Nissim's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Sahar Nissim is licensed in Massachusetts.
Specialties and state licenses
- Gastroenterology, MassachusettsPrimary
Gastroenterologists near Sahar Nissim
Counts of gastroenterologists 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
Sahar Nissim billed Medicare for 61 services in 2024
CMS data shows 61 Medicare services from Sahar Nissim across 3 procedure codes in 2024, for 68 Medicare patients. Medicare paid $8,250 for them.
Sahar Nissim's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 642024: 615%
Where Sahar Nissim's Medicare services took place, 2024
- In an office2338%
- In a facility3862%
Sahar Nissim compared with the Massachusetts median for gastroenterologists, 2024
- Sahar Nissim
- Massachusetts median
- Medicare services
- 61vs 51988% below
- Medicare patients
- 68vs 34380% below
Medians across 583 gastroenterologists in Massachusetts with Dmand AI profiles that report each measure.
Sahar Nissim'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 Sahar Nissim?
Medicare shows one payer. Book a meeting to get commercial claims data for Sahar Nissim and other gastroenterologists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Sahar Nissim treated 68 Medicare patients in 2024, average age 73
CMS counts 68 Medicare patients who saw Sahar Nissim in 2024. The largest group is 65 to 74, with 29 patients. 75% of them have high cholesterol, and 74% have high blood pressure. 26% are also on Medicaid. Their average risk score is 1.92, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Sahar Nissim's median patient age at 58, with 63% women.
Sahar Nissim's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Sahar Nissim's Medicare patients by sex, 2024
- Women4465%
- Men2435%
Chronic conditions among Sahar Nissim's Medicare patients, 2024
- High cholesterol75%
- High blood pressure74%
- Arthritis54%
- Anxiety47%
- Ischemic heart disease40%
- Cancer37%
- Mood disorders37%
- Chronic kidney disease34%
Share of Medicare patients with each condition. A patient can have several.
Sahar Nissim'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
- Women63%
- Men36%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Sahar Nissim offers telehealth to Medicare patients
Sahar Nissim accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Sahar Nissim as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Sahar Nissim received $1,006 in industry payments from 2019 to 2020
CMS Open Payments shows 3 general payments to Sahar Nissim from 2 drug and device companies from 2019 to 2020. Consulting fees make up the largest share, 99% of the total. Foundation Medicine, Inc. paid the most, $1,000.
General payments to Sahar Nissim by program year, 2019 to 2020
General payments to Sahar Nissim by kind, 2019 to 2020
- Consulting fees$1,00099%
- Education$61%
Companies that paid Sahar Nissim the most, 2019 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sahar Nissim graduated from Harvard Medical School
Sahar Nissim graduated from Harvard Medical School in 2007.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Sahar Nissim'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) |
| 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 Sahar Nissim
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Sahar Nissim's NPI number?
Sahar Nissim's NPI number is 1396944401. It was assigned on July 18, 2007, and it is active in the NPI Registry.
What does Sahar Nissim specialize in?
Sahar Nissim is a gastroenterologist in Boston, Massachusetts. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Sahar Nissim practice?
Sahar Nissim practices at 75 Francis Street, Boston, MA 02115. Sahar Nissim's primary practice is Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Sahar Nissim to 1 hospital outpatient department and 1 medical group.
What is Sahar Nissim's office phone number?
The practice phone on file for Sahar Nissim is (617) 732-5500.
What is Sahar Nissim's medical license number?
Sahar Nissim holds Massachusetts license 258952.
Which hospitals is Sahar Nissim affiliated with?
Sahar Nissim practices at Brigham and Women's Hospital in Boston, Massachusetts. Sahar Nissim is also affiliated with Dana-Farber Cancer Institute.
What medical group is Sahar Nissim part of?
Sahar Nissim is linked to Brigham and Women's Hospital. Dmand AI links Sahar Nissim to 1 more medical group.
Does Sahar Nissim accept Medicare?
Yes. CMS data shows Sahar Nissim billed Medicare for 61 services in 2024, and Sahar Nissim accepts Medicare assignment.
Does Sahar Nissim offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Sahar Nissim as offering telehealth services.
How many Medicare patients does Sahar Nissim see?
CMS counts 68 Medicare patients who saw Sahar Nissim in 2024, with an average age of 73.
Show 4 more questionsShow fewer questions
What services does Sahar Nissim bill to Medicare?
In 2024, Sahar Nissim's most billed Medicare services were hospital inpatient care (99223), office visit, established patient (99215) and hospital inpatient care (99233).
Where did Sahar Nissim go to medical school?
Sahar Nissim graduated from Harvard Medical School in 2007.
Has Sahar Nissim received payments from drug or device companies?
CMS Open Payments shows $1,006 in general payments to Sahar Nissim from 2 companies from 2019 to 2020. The largest total came from Foundation Medicine, Inc.
How long has Sahar Nissim been practicing?
Sahar Nissim graduated from medical school in 2007, 19 years ago.
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