Dr. Nina H. Merel, MD
- Medicare services, 2024
- 623
- Medicare patients, 2024
- 409
- Part D claims, 2024
- 643
- MIPS score, 2024
- 84
- Hospital affiliations
- 3
- Practice address
- 2501 Compass Rd, Glenview, IL 60026
- Practice phone
- Call (847) 888-1300
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Illinois Gastroenterology Group
Glenview, Illinois
Find Dr. Merel'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. Nina H. Merel is a gastroenterologist in Glenview, Illinois
Dr. Merel practices at Illinois Gastroenterology Group in Glenview, Illinois.
Dr. Merel's NPI, 1285616300, was assigned on November 15, 2005. Dr. Merel graduated from Rush Medical College of Rush University in 1997. Dr. Merel holds Illinois license 036102428.
- NPI
- 1285616300NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1759347602
- NPI enumeration date
- November 15, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (847) 888-1300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Nina H. Merel practices at Illinois Gastroenterology Group in Glenview, Illinois
Dr. Merel's primary practice is Illinois Gastroenterology Group, at 2501 Compass Rd, Glenview, IL 60026 in Cook County. The practice phone is (847) 888-1300.
- Illinois Gastroenterology Group2501 Compass Rd, Glenview, IL 60026 · Cook CountyPhone(847) 888-1300
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Nina H. Merel is affiliated with 5 sites of care and 1 medical group
Dr. Merel's primary practice is Illinois Gastroenterology Group in Glenview, Illinois. Dr. Merel is also affiliated with Evanston Hospital. The medical group on file is GI Alliance of Illinois. Dmand AI also links Dr. Merel to 2 more hospitals and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Nina H. Merel's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Merel practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Illinois Gastroenterology Group | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Nina H. Merel is one of 771 gastroenterologists in Illinois
Gastroenterology is Dr. Merel's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Merel is licensed in Illinois.
Specialties and state licenses
- Gastroenterology, IllinoisPrimary
Gastroenterologists near Dr. Merel
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. Nina H. Merel billed Medicare for 623 services in 2024
CMS data shows 623 Medicare services from Dr. Merel across 8 procedure codes in 2024, for 409 Medicare patients. Medicare paid $80,934 for them.
Dr. Merel's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2562024: 30720%
- Surgery
- 2023: 2322024: 25811%
- Other services
- 2023: 682024: 5815%
Where Dr. Merel's Medicare services took place, 2024
- In an office28245%
- In a facility34155%
Dr. Merel compared with the Illinois median for gastroenterologists, 2024
- Dr. Merel
- Illinois median
- Medicare services
- 623vs 49825% above
- Medicare patients
- 409vs 30733% above
- Part D claims
- 522vs 37041% above
Medians across 757 gastroenterologists in Illinois with Dmand AI profiles that report each measure.
Dr. Merel'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. Merel and other gastroenterologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nina H. Merel treated 409 Medicare patients in 2024, average age 73
CMS counts 409 Medicare patients who saw Dr. Merel in 2024. The largest group is 65 to 74, with 250 patients. 75% of them have high cholesterol, and 56% have high blood pressure. 5% are also on Medicaid. Their average risk score is 0.92, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Merel's median patient age at 63, with 84% women.
Dr. Merel's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Merel's Medicare patients by sex, 2024
- Women33782%
- Men7218%
Chronic conditions among Dr. Merel's Medicare patients, 2024
- High cholesterol75%
- High blood pressure56%
- Arthritis51%
- Osteoporosis27%
- Anxiety24%
- Mood disorders20%
- Ischemic heart disease19%
- Depression18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Merel's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women84%
- Men15%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Nina H. Merel wrote 643 Medicare Part D claims in 2024
In 2024, Dr. Merel wrote 643 Medicare Part D claims for 259 patients. 66% of them were for generic drugs. CMS names the drug for 522 of them, across 10 drugs with 11 or more claims each, at $119,373 in total drug cost. In 2023, CMS named 458 claims across 10 drugs.
Dr. Merel's Part D claims by kind of drug, 2024
- Generic422 claims66%
- Brand-name221 claims34%
Dr. Merel'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: 4582024: 52214%
Drugs named by CMS: 10 in 2024, 10 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. Nina H. Merel scored 84 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Merel for performance year 2024, reported as part of a group. Dr. Merel accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Merel as offering telehealth. CMS counts 128 procedures of colonoscopy by Dr. Merel, more than 85% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Merel's MIPS scores, performance year 2024
- 84of 100Final score
- 67.6of 100Quality
- 99of 100Promoting Interoperability
- 40of 100Improvement Activities
- 81of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Merel ranks in Medicare procedure volume
- Colonoscopy
- 85th percentile128 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 75th percentile94 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. Nina H. Merel received $132,813 in industry payments from 2016 to 2025
CMS Open Payments shows 828 general payments to Dr. Merel from 45 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 69% of the total. Janssen Pharmaceuticals, Inc paid the most, $53,659. It also lists 1 research payment totaling $64 in 2025, naming 1 clinical trial.
General payments to Dr. Merel by program year, 2016 to 2025
General payments to Dr. Merel by kind, 2016 to 2025
- Speaker and faculty fees$91,85969%
- Food and beverage$18,22714%
- Travel and lodging$12,0759%
- Education speaker fees$8,6006%
- Other$2,0532%
Companies that paid Dr. Merel the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Nina H. Merel graduated from Rush Medical College of Rush University
Dr. Merel graduated from Rush Medical College of Rush University in 1997.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Nina H. Merel'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| 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. Nina H. Merel
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. Nina H. Merel's NPI number?
Dr. Nina H. Merel's NPI number is 1285616300. It was assigned on November 15, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Nina H. Merel?
Dr. Nina H. Merel is a gastroenterologist in Glenview, Illinois. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Nina H. Merel practice?
Dr. Merel practices at 2501 Compass Rd, Glenview, IL 60026. Dr. Merel's primary practice is Illinois Gastroenterology Group in Glenview, Illinois. Dmand AI also links Dr. Merel to 2 hospitals and 1 group practice or clinic.
What is Dr. Nina H. Merel's office phone number?
The practice phone on file for Dr. Merel is (847) 888-1300.
What is Dr. Nina H. Merel's medical license number?
Dr. Merel holds Illinois license 036102428.
Which hospitals is Dr. Nina H. Merel affiliated with?
Dr. Merel is affiliated with Evanston Hospital. Dmand AI links Dr. Merel to 2 more hospitals.
What medical group is Dr. Nina H. Merel part of?
Dr. Merel is linked to GI Alliance of Illinois.
Does Dr. Nina H. Merel accept Medicare?
Yes. CMS data shows Dr. Merel billed Medicare for 623 services in 2024, and Dr. Merel accepts Medicare assignment.
Does Dr. Nina H. Merel offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Merel as offering telehealth services.
What is Dr. Nina H. Merel's MIPS score?
Dr. Merel's MIPS final score for performance year 2024 is 84 out of 100, reported as part of a group.
Show 6 more questionsShow fewer questions
How many Medicare patients does Dr. Nina H. Merel see?
CMS counts 409 Medicare patients who saw Dr. Merel in 2024, with an average age of 73.
What services does Dr. Nina H. Merel bill to Medicare?
In 2024, Dr. Merel's most billed Medicare services were office visit, established patient (99214), office visit, new patient (99204) and surgery: digestive system (45385).
Where did Dr. Nina H. Merel go to medical school?
Dr. Merel graduated from Rush Medical College of Rush University in 1997.
What drugs does Dr. Nina H. Merel prescribe most?
In 2024 Medicare Part D data, Dr. Merel's most prescribed drugs by claims were Omeprazole, Linzess and Famotidine.
Has Dr. Nina H. Merel received payments from drug or device companies?
CMS Open Payments shows $132,813 in general payments to Dr. Merel from 45 companies from 2016 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Nina H. Merel been practicing?
Dr. Merel graduated from medical school in 1997, 29 years ago.
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