Dr. Isabel A. Zacharias, MD

  • Hudson, NY
  • Gastroenterologist
NPI1265603948
Medicare services, 2020
755
Part D claims, 2021
340
Publications
4
Industry payments
$4,195
State license
1
Practice address
71 Prospect Ave, Hudson, NY 12534
Practice phone
Call (508) 856-2846
Professional email
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Personal email
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Mobile number
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Social profiles

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Dr. Isabel A. Zacharias is a gastroenterologist in Hudson, New York

Dr. Zacharias practices in Hudson, New York.

Dr. Zacharias' NPI, 1265603948, was assigned on March 20, 2008. Dr. Zacharias holds Massachusetts license 238014.

NPI and contact details
NPI enumeration date
March 20, 2008
NPI status
Active
Practice phone
(508) 856-2846
Professional email
Get email
Personal email
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Mobile number
Get number
Sex
Female

Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data

Dr. Isabel A. Zacharias' practice address is in Hudson, New York

Dr. Zacharias' practice address in the NPI Registry is 71 Prospect Ave, Hudson, NY 12534, in Columbia County. The practice phone is (508) 856-2846.

  • NPI Registry address
    71 Prospect Ave, Hudson, NY 12534 · Columbia CountyPhone(508) 856-2846

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dmand AI tracks the EHR system at Dr. Isabel A. Zacharias' practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zacharias practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Dr. Zacharias' practiceAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Isabel A. Zacharias is one of 1,583 gastroenterologists in New York

Gastroenterology is Dr. Zacharias' primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Zacharias is licensed in Massachusetts.

Specialties and state licenses

  • Gastroenterology, MassachusettsPrimaryLicense 238014 · taxonomy 207RG0100X

Gastroenterologists near Dr. Zacharias

Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.

1,583gastroenterologists in New York
5gastroenterologists in Hudson

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Isabel A. Zacharias billed Medicare for 755 services in 2020

CMS data shows 755 Medicare services from Dr. Zacharias across 12 procedure codes in 2020. Medicare paid $47,594 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2020755
Paid by Medicare$47,594
Procedure codes12

Dr. Zacharias' Medicare services by type, 2019 to 2020

  • 2019
  • 2020
Office and hospital visits
2019: 6892020: 75510%

Dr. Zacharias compared with the New York median for gastroenterologists, 2020

  • Dr. Zacharias
  • New York median
Medicare services
755vs 42179% above
Part D claims
340vs 38211% below

Medians across 1,551 gastroenterologists in New York with Dmand AI profiles that report each measure.

Dr. Zacharias' most billed Medicare procedure codes, 2020

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. Isabel A. Zacharias' patients have a median age of 60

Across all payers, Dmand AI patient panel data puts Dr. Zacharias' median patient age at 60, with 50% women.

Dr. Zacharias' patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 60

Patient panel by sex, all payers

  • Women50%
  • Men50%

Source: Dmand AI Patient Panel Data

Dr. Isabel A. Zacharias wrote 340 Medicare Part D claims in 2021

In 2021, Dr. Zacharias wrote 340 Medicare Part D claims. They cover 10 drugs, with $114,350 in total drug cost. In 2020, CMS named 1,939 claims across 32 drugs.

Part D claims, 2021340
Drugs named by CMS10
Total drug cost$114,350

Dr. Zacharias' most prescribed drugs by claims, 2021

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, 2020 to 2021

  • 2020
  • 2021
Claims for drugs CMS names
2020: 1,9392021: 34082%

Drugs named by CMS: 10 in 2021, 32 in 2020.

See all prescribing by Dr. Zacharias

Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026

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Dr. Isabel A. Zacharias has 4 publications on record

Dmand AI links 4 papers to Dr. Zacharias, published from 2015 to 2024. 2020 was the busiest year, with 2. Dr. Zacharias' most frequent co-authors are Adel Bozorgzadeh, MD, Curtis Tran Barry, MD and Graham F. Barnard, MD.

Papers4
Years published2015 to 2024

Dr. Zacharias' papers by year, 2015 to 2024

Dr. Zacharias' most frequent co-authors

Recent publications by Dr. Zacharias

See all 4 publications and co-authors

See who Dr. Zacharias researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Zacharias works with, so you can find a warm path to the right gastroenterologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Isabel A. Zacharias received $4,195 in industry payments from 2016 to 2019

CMS Open Payments shows 7 general payments to Dr. Zacharias from 4 drug and device companies from 2016 to 2019. Education speaker fees make up the largest share, 95% of the total. Cook Medical LLC paid the most, $4,153.

General payments to Dr. Zacharias by program year, 2016 to 2019

General payments to Dr. Zacharias by kind, 2016 to 2019

$4.2Kin total
  • Education speaker fees$4,00095%
  • Food and beverage$1874%
  • Education$80%

Companies that paid Dr. Zacharias the most, 2016 to 2019

Share is of all general payments to this clinician.

See all payments to Dr. Zacharias

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Sources for Dr. Isabel A. Zacharias's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel Data
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Isabel A. Zacharias

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. Isabel A. Zacharias' NPI number?

Dr. Isabel A. Zacharias' NPI number is 1265603948. It was assigned on March 20, 2008, and it is active in the NPI Registry.

What kind of doctor is Dr. Isabel A. Zacharias?

Dr. Isabel A. Zacharias is a gastroenterologist in Hudson, New York. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).

Where does Dr. Isabel A. Zacharias practice?

Dr. Zacharias practices at 71 Prospect Ave, Hudson, NY 12534.

What is Dr. Isabel A. Zacharias' office phone number?

The practice phone on file for Dr. Zacharias is (508) 856-2846.

What is Dr. Isabel A. Zacharias' medical license number?

Dr. Zacharias holds Massachusetts license 238014.

Does Dr. Isabel A. Zacharias accept Medicare?

Yes. CMS data shows Dr. Zacharias billed Medicare for 755 services in 2020.

What services does Dr. Isabel A. Zacharias bill to Medicare?

In 2020, Dr. Zacharias' most billed Medicare services were office visit, established patient (99214), hospital inpatient care (99232) and hospital inpatient care (99231).

What drugs does Dr. Isabel A. Zacharias prescribe most?

In 2021 Medicare Part D data, Dr. Zacharias' most prescribed drugs by claims were Ursodiol, Tacrolimus and Omeprazole.

Has Dr. Isabel A. Zacharias received payments from drug or device companies?

CMS Open Payments shows $4,195 in general payments to Dr. Zacharias from 4 companies from 2016 to 2019. The largest total came from Cook Medical LLC.

How long has Dr. Isabel A. Zacharias been practicing?

Dr. Zacharias' NPI was assigned in 2008.

Does Dr. Isabel A. Zacharias do research?

Dmand AI links 4 publications to Dr. Zacharias, published from 2015 to 2024.

Who does Dr. Isabel A. Zacharias publish with?

Dr. Zacharias' most frequent co-authors are Adel Bozorgzadeh, MD (3 shared papers), Curtis Tran Barry, MD (2 shared papers) and Graham F. Barnard, MD (1 shared paper).

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