Dr. Jacob Zamstein, MD
- Medicare services, 2024
- 13
- Medicare patients, 2024
- 25
- Part D claims, 2024
- 48
- Hospital affiliations
- 1
- Industry payments
- $1,546
- Practice address
- 41 Brewster Rd, Bristol, CT 06010
- Practice phone
- Call (860) 585-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Zamstein'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. Jacob Zamstein is a urologist in Bristol, Connecticut
Dr. Zamstein practices at Bristol Hospital in Bristol, Connecticut, part of Bristol Hospital and Health Care Group.
Dr. Zamstein's NPI, 1619969094, was assigned on August 22, 2005. Dr. Zamstein holds Connecticut license 023552.
- NPI
- 1619969094NPI Registry (opens in a new tab)
- NPI enumeration date
- August 22, 2005
- NPI status
- Active
- Practice phone
- (860) 585-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 74
- Medical school graduation
- 1978
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Jacob Zamstein practices at Bristol Hospital in Bristol, Connecticut
Dr. Zamstein's primary practice is Bristol Hospital, at 41 Brewster Rd, Bristol, CT 06010 in Hartford County. The practice phone is (860) 585-3000.
- Bristol Hospital41 Brewster Rd, Bristol, CT 06010 · Hartford CountyPhone(860) 585-3000
Source: Dmand AI Affiliation Data
Dr. Jacob Zamstein is affiliated with 4 sites of care and 3 medical groups
Dr. Zamstein's primary practice is Bristol Hospital in Bristol, Connecticut, part of Bristol Hospital and Health Care Group. The medical group on file is Bristol Health Medical Group. Dmand AI also links Dr. Zamstein to 2 more group practices and clinics, 2 medical groups and 1 physician office, 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. Jacob Zamstein's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zamstein practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Bristol Hospital | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jacob Zamstein is one of 161 urologists in Connecticut
Urology is Dr. Zamstein's primary specialty in the NPI Registry, under taxonomy code 208800000X. Dr. Zamstein is licensed in Connecticut.
Specialties and state licenses
- Urology, ConnecticutPrimary
Urologists near Dr. Zamstein
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. Jacob Zamstein billed Medicare for 13 services in 2024
CMS data shows 13 Medicare services from Dr. Zamstein across 1 procedure code in 2024, all of them office visits, for 25 Medicare patients. Medicare paid $982 for them. Every service was in an office.
Dr. Zamstein's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 02024: 13
- Lab and pathology
- 2023: 152024: 0100%
- Surgery
- 2023: 142024: 0100%
Dr. Zamstein compared with the Connecticut median for urologists, 2024
- Dr. Zamstein
- Connecticut median
- Medicare services
- 13vs 96099% below
- Medicare patients
- 25vs 34393% below
- Part D claims
- 25vs 89897% below
Medians across 158 urologists in Connecticut with Dmand AI profiles that report each measure.
Dr. Zamstein'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Zamstein and other urologists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jacob Zamstein treated 25 Medicare patients in 2024, average age 77
CMS counts 25 Medicare patients who saw Dr. Zamstein in 2024. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 2.65, 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. Zamstein's median patient age at 73, with 16% women.
Chronic conditions among Dr. Zamstein's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease48%
- Mood disorders44%
Share of Medicare patients with each condition. A patient can have several.
Dr. Zamstein's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women16%
- Men82%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jacob Zamstein wrote 48 Medicare Part D claims in 2024
In 2024, Dr. Zamstein wrote 48 Medicare Part D claims for 23 patients. 96% of them were for generic drugs. CMS names the drug for 25 of them, across 1 drug with 11 or more claims each, at $161 in total drug cost. In 2023, CMS named 15 claims across 1 drug.
Dr. Zamstein's Part D claims by kind of drug, 2024
- Generic46 claims96%
- Brand-name and other2 claims4%
Dr. Zamstein'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 152024: 2567%
Drugs named by CMS: 1 in 2024, 1 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
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Dr. Jacob Zamstein received $1,546 in industry payments from 2016 to 2022
CMS Open Payments shows 86 general payments to Dr. Zamstein from 19 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 84% of the total. Endo Pharmaceuticals Inc. paid the most, $403.
General payments to Dr. Zamstein by program year, 2016 to 2022
General payments to Dr. Zamstein by kind, 2016 to 2022
- Food and beverage$1,29984%
- Education$15410%
- Gifts$946%
Companies that paid Dr. Zamstein the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Jacob Zamstein'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) |
| 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. Jacob Zamstein
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. Jacob Zamstein's NPI number?
Dr. Jacob Zamstein's NPI number is 1619969094. It was assigned on August 22, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Jacob Zamstein?
Dr. Jacob Zamstein is a urologist in Bristol, Connecticut. The primary specialty in the NPI Registry is Urology Physician (taxonomy code 208800000X).
Where does Dr. Jacob Zamstein practice?
Dr. Zamstein practices at 41 Brewster Rd, Bristol, CT 06010. Dr. Zamstein's primary practice is Bristol Hospital in Bristol, Connecticut, part of Bristol Hospital and Health Care Group. Dmand AI also links Dr. Zamstein to 2 group practices and clinics, 2 medical groups and 1 physician office.
What is Dr. Jacob Zamstein's office phone number?
The practice phone on file for Dr. Zamstein is (860) 585-3000.
What is Dr. Jacob Zamstein's medical license number?
Dr. Zamstein holds Connecticut license 023552.
Which hospitals is Dr. Jacob Zamstein affiliated with?
Dr. Zamstein practices at Bristol Hospital in Bristol, Connecticut.
What medical group is Dr. Jacob Zamstein part of?
Dr. Zamstein is linked to Bristol Health Medical Group. Dmand AI links Dr. Zamstein to 2 more medical groups.
Does Dr. Jacob Zamstein accept Medicare?
Yes. CMS data shows Dr. Zamstein billed Medicare for 13 services in 2024.
How many Medicare patients does Dr. Jacob Zamstein see?
CMS counts 25 Medicare patients who saw Dr. Zamstein in 2024, with an average age of 77.
What services does Dr. Jacob Zamstein bill to Medicare?
In 2024, Dr. Zamstein's most billed Medicare services were office visit, established patient (99213).
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What drugs does Dr. Jacob Zamstein prescribe most?
In 2024 Medicare Part D data, Dr. Zamstein's most prescribed drugs by claims were Tamsulosin HCl.
Has Dr. Jacob Zamstein received payments from drug or device companies?
CMS Open Payments shows $1,546 in general payments to Dr. Zamstein from 19 companies from 2016 to 2022. The largest total came from Endo Pharmaceuticals Inc.
How long has Dr. Jacob Zamstein been practicing?
Dr. Zamstein graduated from medical school in 1978, 48 years ago.
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