Dr. Amitabh N. Chak, MD
- Medicare services, 2024
- 81
- Medicare patients, 2024
- 130
- Part D claims, 2024
- 147
- Publications
- 84
- Clinical trials
- 1
- Practice address
- 11100 Euclid Avenue, Cleveland, OH 44106
- Practice phone
- Call (216) 844-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chak'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. Amitabh N. Chak is a gastroenterologist in Cleveland, Ohio
Dr. Chak practices at University Hospitals Cleveland Medical Center in Cleveland, Ohio, part of University Hospitals Health System.
Dr. Chak's NPI, 1841215332, was assigned on July 13, 2006. Dr. Chak holds Ohio license 35-061996.
- NPI
- 1841215332NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6709971583
- NPI enumeration date
- July 13, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (216) 844-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Amitabh N. Chak practices at University Hospitals Cleveland Medical Center in Cleveland, Ohio
Dr. Chak's primary practice is University Hospitals Cleveland Medical Center, at 11100 Euclid Avenue, Cleveland, OH 44106 in Cuyahoga County. The practice phone is (216) 844-1000.
- University Hospitals Cleveland Medical Center11100 Euclid Avenue, Cleveland, OH 44106 · Cuyahoga CountyPhone(216) 844-1000
Source: Dmand AI Affiliation Data
Dr. Amitabh N. Chak is affiliated with 2 sites of care and 1 medical group
Dr. Chak's primary practice is University Hospitals Cleveland Medical Center in Cleveland, Ohio, part of University Hospitals Health System. Dr. Chak is also affiliated with University Hospitals Ahuja Medical Center. The medical group on file is University Hospitals Medical Practices.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Amitabh N. Chak's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chak practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| University Hospitals Cleveland Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Amitabh N. Chak is one of 692 gastroenterologists in Ohio
Gastroenterology is Dr. Chak's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Chak is licensed in Ohio.
Specialties and state licenses
- Gastroenterology, OhioPrimary
Gastroenterologists near Dr. Chak
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. Amitabh N. Chak billed Medicare for 81 services in 2024
CMS data shows 81 Medicare services from Dr. Chak across 5 procedure codes in 2024, for 130 Medicare patients. Medicare paid $4,557 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Chak's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 1062024: 3171%
- Other services
- 2023: 492024: 2647%
- Office and hospital visits
- 2023: 02024: 24
Dr. Chak compared with the Ohio median for gastroenterologists, 2024
- Dr. Chak
- Ohio median
- Medicare services
- 81vs 40480% below
- Medicare patients
- 130vs 28855% below
- Part D claims
- 96vs 40276% below
Medians across 687 gastroenterologists in Ohio with Dmand AI profiles that report each measure.
Dr. Chak'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. Chak and other gastroenterologists in Ohio.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Amitabh N. Chak treated 130 Medicare patients in 2024, average age 73
CMS counts 130 Medicare patients who saw Dr. Chak in 2024. The largest group is 65 to 74, with 58 patients. 75% of them have high blood pressure, and 72% have high cholesterol. 8% are also on Medicaid. Their average risk score is 1.80, 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. Chak's median patient age at 71, with 43% women.
Dr. Chak's Medicare patients by age, 2024
Dr. Chak's Medicare patients by sex, 2024
- Women6046%
- Men7054%
Chronic conditions among Dr. Chak's Medicare patients, 2024
- High blood pressure75%
- High cholesterol72%
- Arthritis52%
- Ischemic heart disease38%
- Diabetes37%
- Chronic kidney disease35%
- Anxiety31%
- Cancer28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chak's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women43%
- Men55%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Amitabh N. Chak wrote 147 Medicare Part D claims in 2024
In 2024, Dr. Chak wrote 147 Medicare Part D claims for 33 patients. 83% of them were for generic drugs. CMS names the drug for 96 of them, across 4 drugs with 11 or more claims each, at $23,508 in total drug cost. In 2023, CMS named 59 claims across 4 drugs.
Dr. Chak's Part D claims by kind of drug, 2024
- Generic122 claims83%
- Brand-name25 claims17%
Dr. Chak'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. Chak's Part D claims, 2024
- Antibiotics7%11 of 147 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: 592024: 9663%
Drugs named by CMS: 4 in 2024, 4 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. Amitabh N. Chak scored 81 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 81 out of 100 for Dr. Chak for performance year 2024, reported as part of a group. Dr. Chak accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chak as offering telehealth. CMS counts 171 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Chak, more than 87% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Chak's MIPS scores, performance year 2024
- 81of 100Final score
- 63.1of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 74of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Chak ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 87th percentile171 procedures
- Colonoscopy
- 51st percentile26 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
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. Amitabh N. Chak has 84 publications on record
Dmand AI links 84 papers to Dr. Chak, published from 2015 to 2025. 2021 was the busiest year, with 13. The most frequent topics are Barrett Esophagus, Esophageal Neoplasms and Adenocarcinoma. Dr. Chak has published most often in Gastrointest Endosc. Dr. Chak's most frequent co-authors are Prasad Ganapathy Iyer, MD, Apoorva Krishna Chandar, MD, MPH and John Adam Dumot, DO.
Dr. Chak's papers by year, 2015 to 2025
Topics Dr. Chak writes about most
- Barrett Esophagus
- Esophageal Neoplasms
- Adenocarcinoma
- Cholangiopancreatography, Endoscopic Retrograde
- Disease Progression
- Endoscopic Mucosal Resection
- Endoscopy, Gastrointestinal
- Endosonography
Dr. Chak's most frequent co-authors
- Prasad Ganapathy Iyer, MD18 shared papers
- Apoorva Krishna Chandar, MD, MPH13 shared papers
- John Adam Dumot, DO13 shared papers
Recent publications by Dr. Chak
Clin Transl Gastroenterol
Am J Gastroenterol
See who Dr. Chak researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chak works with, so you can find a warm path to the right gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Amitabh N. Chak has worked on 1 clinical trial
Dmand AI links Dr. Chak to 1 clinical trial. 1 is still active or recruiting. Conditions studied include Hereditary pancreatitis and Peutz-Jeghers Syndrome. Open Payments lists research payments to Dr. Chak that name 1 trial.
Conditions in Dr. Chak's trials
- Hereditary pancreatitis
- Peutz-Jeghers Syndrome
Investigators on the most trials with Dr. Chak
- Randall E. Brand1 shared trial
- James Joseph Farrell, MD1 shared trial
- Michael Gilbert Goggins, MD1 shared trial
Recent clinical trials with Dr. Chak
Sources: Open Payments (CMS), 2025 data, released July 7, 2026; Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Amitabh N. Chak received $66,551 in industry payments from 2016 to 2025
CMS Open Payments shows 87 general payments to Dr. Chak from 17 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 75% of the total. Lucid Diagnostics Inc. paid the most, $30,437. It also lists 5 research payments totaling $31,500 from 2017 to 2018, naming 1 clinical trial.
General payments to Dr. Chak by program year, 2016 to 2025
General payments to Dr. Chak by kind, 2016 to 2025
- Consulting fees$50,00575%
- Travel and lodging$13,66221%
- Food and beverage$1,9183%
- Grants$5631%
- Ownership or investment$4041%
Companies that paid Dr. Chak the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Amitabh N. Chak'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 |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (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. Amitabh N. Chak
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. Amitabh N. Chak's NPI number?
Dr. Amitabh N. Chak's NPI number is 1841215332. It was assigned on July 13, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Amitabh N. Chak?
Dr. Amitabh N. Chak is a gastroenterologist in Cleveland, Ohio. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Amitabh N. Chak practice?
Dr. Chak practices at 11100 Euclid Avenue, Cleveland, OH 44106. Dr. Chak's primary practice is University Hospitals Cleveland Medical Center in Cleveland, Ohio, part of University Hospitals Health System.
What is Dr. Amitabh N. Chak's office phone number?
The practice phone on file for Dr. Chak is (216) 844-1000.
What is Dr. Amitabh N. Chak's medical license number?
Dr. Chak holds Ohio license 35-061996.
Which hospitals is Dr. Amitabh N. Chak affiliated with?
Dr. Chak practices at University Hospitals Cleveland Medical Center in Cleveland, Ohio. Dr. Chak is also affiliated with University Hospitals Ahuja Medical Center.
What medical group is Dr. Amitabh N. Chak part of?
Dr. Chak is linked to University Hospitals Medical Practices.
Does Dr. Amitabh N. Chak accept Medicare?
Yes. CMS data shows Dr. Chak billed Medicare for 81 services in 2024, and Dr. Chak accepts Medicare assignment.
Does Dr. Amitabh N. Chak offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Chak as offering telehealth services.
What is Dr. Amitabh N. Chak's MIPS score?
Dr. Chak's MIPS final score for performance year 2024 is 81 out of 100, reported as part of a group.
Show 7 more questionsShow fewer questions
How many Medicare patients does Dr. Amitabh N. Chak see?
CMS counts 130 Medicare patients who saw Dr. Chak in 2024, with an average age of 73.
What services does Dr. Amitabh N. Chak bill to Medicare?
In 2024, Dr. Chak's most billed Medicare services were medicare service (G0500), surgery: digestive system (43239) and surgery: digestive system (43235).
What drugs does Dr. Amitabh N. Chak prescribe most?
In 2024 Medicare Part D data, Dr. Chak's most prescribed drugs by claims were Omeprazole, Pantoprazole Sodium and Creon.
Has Dr. Amitabh N. Chak received payments from drug or device companies?
CMS Open Payments shows $66,551 in general payments to Dr. Chak from 17 companies from 2016 to 2025. The largest total came from Lucid Diagnostics Inc.
How long has Dr. Amitabh N. Chak been practicing?
Dr. Chak graduated from medical school in 1984, 42 years ago.
Does Dr. Amitabh N. Chak do research?
Dmand AI links 84 publications to Dr. Chak, published from 2015 to 2025. Dr. Chak has worked on 1 clinical trial.
Who does Dr. Amitabh N. Chak publish with?
Dr. Chak's most frequent co-authors are Prasad Ganapathy Iyer, MD (18 shared papers), Apoorva Krishna Chandar, MD, MPH (13 shared papers) and John Adam Dumot, DO (13 shared papers).
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