Dr. Zachary Benjamin Koloff, MD
- Medicare services, 2024
- 6,825
- Medicare patients, 2024
- 548
- Part D claims, 2024
- 1,352
- Publications
- 2
- MIPS score, 2024
- 92
- Practice address
- 41 Highland Avenue, Winchester, MA 01890
- Practice phone
- Call (781) 729-9000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Koloff'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. Zachary Benjamin Koloff is a urologist in Winchester, Massachusetts
Dr. Koloff practices at Winchester Hospital in Winchester, Massachusetts, part of Beth Israel Lahey Health.
Dr. Koloff's NPI, 1770996175, was assigned on June 4, 2014. Dr. Koloff graduated from University of Michigan Medical School in 2014. Dr. Koloff holds Massachusetts license 279101.
- NPI
- 1770996175NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6901114255
- NPI enumeration date
- June 4, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (781) 729-9000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Zachary Benjamin Koloff practices at Winchester Hospital in Winchester, Massachusetts
Dr. Koloff's primary practice is Winchester Hospital, at 41 Highland Avenue, Winchester, MA 01890 in Middlesex County. The practice phone is (781) 729-9000.
- Winchester Hospital41 Highland Avenue, Winchester, MA 01890 · Middlesex CountyPhone(781) 729-9000
Source: Dmand AI Affiliation Data
Dr. Zachary Benjamin Koloff is affiliated with 6 sites of care and 3 medical groups
Dr. Koloff's primary practice is Winchester Hospital in Winchester, Massachusetts, part of Beth Israel Lahey Health. Dr. Koloff is also affiliated with Lahey Clinic. The medical group on file is Beth Israel Lahey Health. Dmand AI also links Dr. Koloff to 1 more hospital, 3 group practices and clinics and 2 medical groups, 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. Zachary Benjamin Koloff's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Koloff practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Winchester Hospital | Available with a free account |
| +5 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Beth Israel Lahey Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Zachary Benjamin Koloff is one of 315 urologists in Massachusetts
Urology is Dr. Koloff's primary specialty in the NPI Registry, under taxonomy code 208800000X. Dmand AI has Dr. Koloff's licenses on file in 2 states: Massachusetts and Michigan.
Specialties and state licenses
- Urology, MassachusettsPrimary
- Student in an organized health care education/training program, Michigan
Urologists near Dr. Koloff
Counts of urologists 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. Zachary Benjamin Koloff billed Medicare for 6,825 services in 2024
CMS data shows 6,825 Medicare services from Dr. Koloff across 22 procedure codes in 2024, for 548 Medicare patients. Medicare paid $160,020 for them.
Dr. Koloff's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 4,0512024: 5,10026%
- Office and hospital visits
- 2023: 7062024: 7608%
- Surgery
- 2023: 4372024: 4483%
- Other services
- 2023: 02024: 283
- Lab and pathology
- 2023: 902024: 11831%
- Imaging
- 2023: 1602024: 11628%
Where Dr. Koloff's Medicare services took place, 2024
- In an office6,71298%
- In a facility1132%
Dr. Koloff compared with the Massachusetts median for urologists, 2024
- Dr. Koloff
- Massachusetts median
- Medicare services
- 6,825vs 1,1525.9 times
- Medicare patients
- 548vs 5098% above
- Part D claims
- 1,219vs 5762.1 times
Medians across 305 urologists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Koloff'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. Koloff?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Koloff and other urologists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Zachary Benjamin Koloff treated 548 Medicare patients in 2024, average age 75
CMS counts 548 Medicare patients who saw Dr. Koloff in 2024. The largest group is 65 to 74, with 240 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 9% are also on Medicaid. Their average risk score is 1.28, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Koloff's median patient age at 69, with 15% women.
Dr. Koloff's Medicare patients by age, 2024
Dr. Koloff's Medicare patients by sex, 2024
- Women9016%
- Men45884%
Chronic conditions among Dr. Koloff's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis41%
- Chronic kidney disease36%
- Ischemic heart disease34%
- Diabetes33%
- Cancer32%
- Atrial fibrillation25%
Share of Medicare patients with each condition. A patient can have several.
Dr. Koloff's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women15%
- Men85%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Zachary Benjamin Koloff wrote 1,352 Medicare Part D claims in 2024
In 2024, Dr. Koloff wrote 1,352 Medicare Part D claims for 381 patients. 89% of them were for generic drugs. CMS names the drug for 1,219 of them, across 21 drugs with 11 or more claims each, at $138,092 in total drug cost. In 2023, CMS named 1,298 claims across 21 drugs.
Dr. Koloff's Part D claims by kind of drug, 2024
- Generic1,210 claims89%
- Brand-name and other142 claims11%
Dr. Koloff's most prescribed drugs by claims, 2024
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. Koloff's Part D claims, 2024
- Opioids1%12 of 1,352 claims
- Antibiotics10%131 of 1,352 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, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,2982024: 1,2196%
Drugs named by CMS: 21 in 2024, 21 in 2023.
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. Zachary Benjamin Koloff scored 92 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 92 out of 100 for Dr. Koloff for performance year 2024, reported through an alternative payment model (APM). Dr. Koloff accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Koloff as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Koloff's MIPS scores, performance year 2024
- 92of 100Final score
- 76.6of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Prostate resection: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Zachary Benjamin Koloff has 2 publications on record
Dmand AI links 2 papers to Dr. Koloff in 2014. Dr. Koloff's most frequent co-author is Khurshid Ridwan Ghani, MD.
Dr. Koloff's most frequent co-authors
Recent publications by Dr. Koloff
See who Dr. Koloff researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Koloff works with, so you can find a warm path to the right urologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Zachary Benjamin Koloff received $4,326 in industry payments from 2018 to 2025
CMS Open Payments shows 52 general payments to Dr. Koloff from 22 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 40% of the total. Olympus Medical Systems Corporation paid the most, $1,620.
General payments to Dr. Koloff by program year, 2018 to 2025
General payments to Dr. Koloff by kind, 2018 to 2025
- Food and beverage$1,71140%
- Consulting fees$1,62037%
- Travel and lodging$83319%
- Education$1614%
Companies that paid Dr. Koloff the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Zachary Benjamin Koloff graduated from University of Michigan Medical School
Dr. Koloff graduated from University of Michigan Medical School in 2014.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Zachary Benjamin Koloff'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 | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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) |
| 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. Zachary Benjamin Koloff
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. Zachary Benjamin Koloff's NPI number?
Dr. Zachary Benjamin Koloff's NPI number is 1770996175. It was assigned on June 4, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Zachary Benjamin Koloff?
Dr. Zachary Benjamin Koloff is a urologist in Winchester, Massachusetts. The primary specialty in the NPI Registry is Urology Physician (taxonomy code 208800000X).
Where does Dr. Zachary Benjamin Koloff practice?
Dr. Koloff practices at 41 Highland Avenue, Winchester, MA 01890. Dr. Koloff's primary practice is Winchester Hospital in Winchester, Massachusetts, part of Beth Israel Lahey Health. Dmand AI also links Dr. Koloff to 1 hospital, 3 group practices and clinics and 2 medical groups.
What is Dr. Zachary Benjamin Koloff's office phone number?
The practice phone on file for Dr. Koloff is (781) 729-9000.
What is Dr. Zachary Benjamin Koloff's medical license number?
Dr. Koloff holds Massachusetts license 279101, one of the licenses on file in 2 states.
Which states has Dr. Zachary Benjamin Koloff been licensed in?
Dmand AI has state licenses on file for Dr. Koloff in Massachusetts and Michigan.
Which hospitals is Dr. Zachary Benjamin Koloff affiliated with?
Dr. Koloff practices at Winchester Hospital in Winchester, Massachusetts. Dr. Koloff is also affiliated with Lahey Clinic. Dmand AI links Dr. Koloff to 1 more hospital.
What medical group is Dr. Zachary Benjamin Koloff part of?
Dr. Koloff is linked to Beth Israel Lahey Health. Dmand AI links Dr. Koloff to 2 more medical groups.
Does Dr. Zachary Benjamin Koloff accept Medicare?
Yes. CMS data shows Dr. Koloff billed Medicare for 6,825 services in 2024, and Dr. Koloff accepts Medicare assignment.
Does Dr. Zachary Benjamin Koloff offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Koloff as offering telehealth services.
Show 9 more questionsShow fewer questions
What is Dr. Zachary Benjamin Koloff's MIPS score?
Dr. Koloff's MIPS final score for performance year 2024 is 92 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. Zachary Benjamin Koloff see?
CMS counts 548 Medicare patients who saw Dr. Koloff in 2024, with an average age of 75.
What services does Dr. Zachary Benjamin Koloff bill to Medicare?
In 2024, Dr. Koloff's most billed Medicare services were injected or infused drug (J9030), office visit, established patient (99214) and medicare service (G2211).
Where did Dr. Zachary Benjamin Koloff go to medical school?
Dr. Koloff graduated from University of Michigan Medical School in 2014.
What drugs does Dr. Zachary Benjamin Koloff prescribe most?
In 2024 Medicare Part D data, Dr. Koloff's most prescribed drugs by claims were Tamsulosin HCl, Finasteride and Myrbetriq.
Has Dr. Zachary Benjamin Koloff received payments from drug or device companies?
CMS Open Payments shows $4,326 in general payments to Dr. Koloff from 22 companies from 2018 to 2025. The largest total came from Olympus Medical Systems Corporation.
How long has Dr. Zachary Benjamin Koloff been practicing?
Dr. Koloff graduated from medical school in 2014, 12 years ago.
Does Dr. Zachary Benjamin Koloff do research?
Dmand AI links 2 publications to Dr. Koloff.
Who does Dr. Zachary Benjamin Koloff publish with?
Dr. Koloff's most frequent co-authors are Khurshid Ridwan Ghani, MD (1 shared paper).
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