Dr. Benjamin Zimmerman Root, MD

  • Saint Louis, MO
  • Gastroenterologist
NPI1619355765PAC ID2860801149
Medicare services, 2024
605
Medicare patients, 2024
424
Part D claims, 2024
1,417
Publications
1
Hospital affiliations
4
Practice address
11525 Olde Cabin Road, suite 101, Creve Coeur, MO 63141
Practice phone
Call (314) 400-9999
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Advanced Endoscopy Center - Creve Coeur

Surgery Center - Medicare-Certified · Creve Coeur, Missouri

See all 6 affiliations

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Dr. Benjamin Zimmerman Root is a gastroenterologist in Saint Louis, Missouri

Dr. Root practices at Advanced Endoscopy Center - Creve Coeur in Creve Coeur, Missouri.

Dr. Root's NPI, 1619355765, was assigned on May 9, 2015. Dr. Root graduated from Jefferson Medical College of Thomas Jefferson University in 2015. Dr. Root holds Missouri license 2021008458.

NPI and contact details
Medicare PAC ID
2860801149
NPI enumeration date
May 9, 2015
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(314) 400-9999
Professional email
Get email
Personal email
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Mobile number
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Sex
Male
Estimated age
37
Medical school graduation
2015

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Benjamin Zimmerman Root practices at Advanced Endoscopy Center - Creve Coeur in Creve Coeur, Missouri

Dr. Root's primary practice is Advanced Endoscopy Center - Creve Coeur, at 11525 Olde Cabin Road, suite 101, Creve Coeur, MO 63141. The practice phone is (314) 400-9999.

  • Advanced Endoscopy Center - Creve Coeur
    11525 Olde Cabin Road, suite 101, Creve Coeur, MO 63141Phone(314) 400-9999

Source: Dmand AI Affiliation Data

Dr. Benjamin Zimmerman Root is affiliated with 5 sites of care and 1 medical group

Dr. Root's primary practice is Advanced Endoscopy Center - Creve Coeur in Creve Coeur, Missouri. Dr. Root is also affiliated with Barnes-Jewish Hospital. The medical group on file is Digestive Health Specialists. Dmand AI also links Dr. Root to 3 more hospitals, each named with a free account.

See all 6 affiliations for Dr. Root

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Benjamin Zimmerman Root's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Root practices, 5 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Advanced Endoscopy Center - Creve CoeurAvailable with a free account
+4 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Benjamin Zimmerman Root is one of 329 gastroenterologists in Missouri

Gastroenterology is Dr. Root's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dmand AI has Dr. Root's licenses on file in 2 states: Missouri and New York.

Specialties and state licenses

  • Gastroenterology, MissouriPrimaryLicense 2021008458 · taxonomy 207RG0100X
  • Student in an organized health care education/training program, New Yorktaxonomy 390200000X

Gastroenterologists near Dr. Root

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

Dr. Benjamin Zimmerman Root billed Medicare for 605 services in 2024

CMS data shows 605 Medicare services from Dr. Root across 8 procedure codes in 2024, for 424 Medicare patients. Medicare paid $78,263 for them.

Medicare services, 2024605
Medicare patients424
Paid by Medicare$78,263
Procedure codes8

Dr. Root's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Surgery
2023: 3162024: 38622%
Office and hospital visits
2023: 1092024: 17157%
Other services
2023: 232024: 48109%
Drugs given in the office
2023: 8,2402024: 0100%
Lab and pathology
2023: 802024: 0100%
Tests and treatments
2023: 562024: 0100%

Where Dr. Root's Medicare services took place, 2024

  • In an office17128%
  • In a facility43472%

Dr. Root compared with the Missouri median for gastroenterologists, 2024

  • Dr. Root
  • Missouri median
Medicare services
605vs 41645% above
Medicare patients
424vs 29643% above
Part D claims
1,276vs 4342.9 times

Medians across 337 gastroenterologists in Missouri with Dmand AI profiles that report each measure.

Dr. Root'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.

See all procedures by Dr. Root

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Benjamin Zimmerman Root treated 424 Medicare patients in 2024, average age 73

CMS counts 424 Medicare patients who saw Dr. Root in 2024. The largest group is 65 to 74, with 245 patients. 74% of them have high cholesterol, and 69% have high blood pressure. 3% are also on Medicaid. Their average risk score is 1.01, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Root's median patient age at 64, with 47% women.

Medicare patients, 2024424
Average age73
Average risk score1.01
Also on Medicaid3%

Dr. Root's Medicare patients by age, 2024

Dr. Root's Medicare patients by sex, 2024

  • Women21551%
  • Men20949%

Chronic conditions among Dr. Root's Medicare patients, 2024

  1. High cholesterol74%
  2. High blood pressure69%
  3. Arthritis48%
  4. Ischemic heart disease26%
  5. Mood disorders26%
  6. Anxiety25%
  7. Depression23%
  8. Diabetes23%

Share of Medicare patients with each condition. A patient can have several.

Dr. Root's patients across all payers

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

Patient panel by age, all payers

Median age 64

Patient panel by sex, all payers

  • Women47%
  • Men52%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Benjamin Zimmerman Root wrote 1,417 Medicare Part D claims in 2024

In 2024, Dr. Root wrote 1,417 Medicare Part D claims for 635 patients. 80% of them were for generic drugs. CMS names the drug for 1,276 of them, across 19 drugs with 11 or more claims each, at $70,517 in total drug cost. In 2023, CMS named 624 claims across 8 drugs.

Part D claims, 20241,417
Drugs named by CMS19
Total drug cost$70,517
Part D patients635

Dr. Root's Part D claims by kind of drug, 2024

  • Generic1,136 claims80%
  • Brand-name281 claims20%

Dr. Root'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. Root's Part D claims, 2024

  • Antibiotics1%14 of 1,417 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: 6242024: 1,276104%

Drugs named by CMS: 19 in 2024, 8 in 2023.

See all prescribing by Dr. Root

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. Benjamin Zimmerman Root ranks in the 90th percentile for colonoscopy in Medicare

Dr. Root accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 158 procedures of colonoscopy by Dr. Root, more than 90% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes

Where Dr. Root ranks in Medicare procedure volume

Upper gastrointestinal (GI) endoscopy for acid reflux
87th percentile165 procedures
Colonoscopy
90th percentile158 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)

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Dr. Benjamin Zimmerman Root has 1 publication on record

Dmand AI links 1 paper to Dr. Root in 2015.

Papers1

Recent publications by Dr. Root

See all 1 publications and co-authors

See who Dr. Root researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Root 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. Benjamin Zimmerman Root received $12,915 in industry payments from 2021 to 2025

CMS Open Payments shows 717 general payments to Dr. Root from 37 drug and device companies from 2021 to 2025. Food and beverage make up the largest share, 98% of the total. Abbvie Inc. paid the most, $3,428.

General payments to Dr. Root by program year, 2021 to 2025

General payments to Dr. Root by kind, 2021 to 2025

$12.9Kin total
  • Food and beverage$12,70498%
  • Education$2112%

Companies that paid Dr. Root the most, 2021 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Root

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

Dr. Benjamin Zimmerman Root graduated from Jefferson Medical College of Thomas Jefferson University

Dr. Root graduated from Jefferson Medical College of Thomas Jefferson University in 2015.

  1. Medical schoolJefferson Medical College of Thomas Jefferson University

Source: Dmand AI Professional Profile Data

Sources for Dr. Benjamin Zimmerman Root'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 phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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)
Training, board certification and membershipsDmand AI Professional Profile Data
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. Benjamin Zimmerman Root

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. Benjamin Zimmerman Root's NPI number?

Dr. Benjamin Zimmerman Root's NPI number is 1619355765. It was assigned on May 9, 2015, and it is active in the NPI Registry.

What kind of doctor is Dr. Benjamin Zimmerman Root?

Dr. Benjamin Zimmerman Root is a gastroenterologist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).

Where does Dr. Benjamin Zimmerman Root practice?

Dr. Root practices at 11525 Olde Cabin Road, suite 101, Creve Coeur, MO 63141. Dr. Root's primary practice is Advanced Endoscopy Center - Creve Coeur in Creve Coeur, Missouri. Dmand AI also links Dr. Root to 3 hospitals.

What is Dr. Benjamin Zimmerman Root's office phone number?

The practice phone on file for Dr. Root is (314) 400-9999.

What is Dr. Benjamin Zimmerman Root's medical license number?

Dr. Root holds Missouri license 2021008458, one of the licenses on file in 2 states.

Which states has Dr. Benjamin Zimmerman Root been licensed in?

Dmand AI has state licenses on file for Dr. Root in Missouri and New York.

Which hospitals is Dr. Benjamin Zimmerman Root affiliated with?

Dr. Root is affiliated with Barnes-Jewish Hospital. Dmand AI links Dr. Root to 3 more hospitals.

What medical group is Dr. Benjamin Zimmerman Root part of?

Dr. Root is linked to Digestive Health Specialists.

Does Dr. Benjamin Zimmerman Root accept Medicare?

Yes. CMS data shows Dr. Root billed Medicare for 605 services in 2024, and Dr. Root accepts Medicare assignment.

How many Medicare patients does Dr. Benjamin Zimmerman Root see?

CMS counts 424 Medicare patients who saw Dr. Root in 2024, with an average age of 73.

Show 6 more questionsShow fewer questions

What services does Dr. Benjamin Zimmerman Root bill to Medicare?

In 2024, Dr. Root's most billed Medicare services were surgery: digestive system (45385), surgery: digestive system (43239) and office visit, established patient (99214).

Where did Dr. Benjamin Zimmerman Root go to medical school?

Dr. Root graduated from Jefferson Medical College of Thomas Jefferson University in 2015.

What drugs does Dr. Benjamin Zimmerman Root prescribe most?

In 2024 Medicare Part D data, Dr. Root's most prescribed drugs by claims were Ondansetron ODT, Omeprazole and Sod Sulf-Potass Sulf-Mag Sulf.

Has Dr. Benjamin Zimmerman Root received payments from drug or device companies?

CMS Open Payments shows $12,915 in general payments to Dr. Root from 37 companies from 2021 to 2025. The largest total came from Abbvie Inc.

How long has Dr. Benjamin Zimmerman Root been practicing?

Dr. Root graduated from medical school in 2015, 11 years ago.

Does Dr. Benjamin Zimmerman Root do research?

Dmand AI links 1 publication to Dr. Root.

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