Dr. Joseph N. Mermelstein, MD
- Medicare services, 2024
- 791
- Medicare patients, 2024
- 478
- Part D claims, 2024
- 434
- MIPS score, 2024
- 99
- Hospital affiliations
- 1
- Practice address
- Davis Ave at E Post Road, White Plains, NY 10601
- Practice phone
- Call (914) 681-0600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Mermelstein'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. Joseph N. Mermelstein is a gastroenterologist in White Plains, New York
Dr. Mermelstein practices at White Plains Hospital in White Plains, New York, part of Montefiore Einstein.
Dr. Mermelstein's NPI, 1689963662, was assigned on March 30, 2011. Dr. Mermelstein graduated from Icahn School Of Medicine At Mount Sinai in 2011. Dr. Mermelstein holds New York license 273034.
- NPI
- 1689963662NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1658598883
- NPI enumeration date
- March 30, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (914) 681-0600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Joseph N. Mermelstein practices at 2 locations in White Plains, New York
Dr. Mermelstein's primary practice is White Plains Hospital, at Davis Ave at E Post Road, White Plains, NY 10601 in Westchester County. The practice phone is (914) 681-0600. Dr. Mermelstein also practices at White Plains Hospital, 41 E Post Rd, White Plains, NY 10601.
- White Plains HospitalPrimaryDavis Ave at E Post Road, White Plains, NY 10601 · Westchester CountyPhone(914) 681-0600
- White Plains Hospital41 E Post Rd, White Plains, NY 10601 · Westchester CountyPhone(914) 681-1210
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Joseph N. Mermelstein is affiliated with 2 sites of care and 3 medical groups
Dr. Mermelstein's primary practice is White Plains Hospital in White Plains, New York, part of Montefiore Einstein. The medical group on file is Mount Sinai Institute for Liver Medicine. Dmand AI also links Dr. Mermelstein to 2 more medical groups and 1 group practice or clinic, 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. Joseph N. Mermelstein's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mermelstein practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| White Plains Hospital | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Montefiore Einstein and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Joseph N. Mermelstein is one of 1,583 gastroenterologists in New York
Gastroenterology is Dr. Mermelstein's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Mermelstein is licensed in New York.
Specialties and state licenses
- Gastroenterology, New YorkPrimary
Gastroenterologists near Dr. Mermelstein
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. Joseph N. Mermelstein billed Medicare for 791 services in 2024
CMS data shows 791 Medicare services from Dr. Mermelstein across 12 procedure codes in 2024, for 478 Medicare patients. Medicare paid $100,181 for them.
Dr. Mermelstein's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4242024: 4649%
- Surgery
- 2023: 3362024: 26421%
- Lab and pathology
- 2023: 342024: 366%
- Other services
- 2023: 442024: 2739%
Where Dr. Mermelstein's Medicare services took place, 2024
- In an office58574%
- In a facility20626%
Dr. Mermelstein compared with the New York median for gastroenterologists, 2024
- Dr. Mermelstein
- New York median
- Medicare services
- 791vs 42188% above
- Medicare patients
- 478vs 2362.0 times
- Part D claims
- 323vs 38215% below
Medians across 1,551 gastroenterologists in New York with Dmand AI profiles that report each measure.
Dr. Mermelstein'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.
Need commercial claims for Dr. Mermelstein?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Mermelstein and other gastroenterologists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Joseph N. Mermelstein treated 478 Medicare patients in 2024, average age 76
CMS counts 478 Medicare patients who saw Dr. Mermelstein in 2024. The largest group is 65 to 74, with 196 patients. 75% of them have high cholesterol, and 72% have high blood pressure. 8% are also on Medicaid. Their average risk score is 1.24, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Mermelstein's median patient age at 62, with 42% women.
Dr. Mermelstein's Medicare patients by age, 2024
Dr. Mermelstein's Medicare patients by sex, 2024
- Women26054%
- Men21846%
Chronic conditions among Dr. Mermelstein's Medicare patients, 2024
- High cholesterol75%
- High blood pressure72%
- Arthritis50%
- Ischemic heart disease29%
- Diabetes27%
- Anxiety26%
- Mood disorders23%
- Cancer21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Mermelstein's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women42%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Joseph N. Mermelstein wrote 434 Medicare Part D claims in 2024
In 2024, Dr. Mermelstein wrote 434 Medicare Part D claims for 167 patients. 78% of them were for generic drugs. CMS names the drug for 323 of them, across 9 drugs with 11 or more claims each, at $70,511 in total drug cost. In 2023, CMS named 323 claims across 11 drugs.
Dr. Mermelstein's Part D claims by kind of drug, 2024
- Generic337 claims78%
- Brand-name and other97 claims22%
Dr. Mermelstein'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. Mermelstein's Part D claims, 2024
- Antibiotics5%21 of 434 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: 3232024: 323No change
Drugs named by CMS: 9 in 2024, 11 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. Joseph N. Mermelstein scored 99 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 99 out of 100 for Dr. Mermelstein for performance year 2024, reported as part of a group. Dr. Mermelstein accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Mermelstein as offering telehealth. CMS counts 209 procedures of colonoscopy by Dr. Mermelstein, more than 94% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Mermelstein's MIPS scores, performance year 2024
- 99of 100Final score
- 99of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Mermelstein ranks in Medicare procedure volume
- Colonoscopy
- 94th percentile209 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 77th percentile103 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)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Joseph N. Mermelstein received $3,161 in industry payments from 2018 to 2025
CMS Open Payments shows 179 general payments to Dr. Mermelstein from 18 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $1,162.
General payments to Dr. Mermelstein by program year, 2018 to 2025
Companies that paid Dr. Mermelstein the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Joseph N. Mermelstein graduated from Icahn School Of Medicine At Mount Sinai
Dr. Mermelstein graduated from Icahn School Of Medicine At Mount Sinai in 2011.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Joseph N. Mermelstein'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 Affiliation DataDmand AI Practice 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) |
| 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. Joseph N. Mermelstein
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. Joseph N. Mermelstein's NPI number?
Dr. Joseph N. Mermelstein's NPI number is 1689963662. It was assigned on March 30, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. Joseph N. Mermelstein?
Dr. Joseph N. Mermelstein is a gastroenterologist in White Plains, New York. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Joseph N. Mermelstein practice?
Dr. Mermelstein practices at Davis Ave at E Post Road, White Plains, NY 10601. Dr. Mermelstein also practices at 41 E Post Rd, White Plains, NY 10601. Dr. Mermelstein's primary practice is White Plains Hospital in White Plains, New York, part of Montefiore Einstein. Dmand AI also links Dr. Mermelstein to 2 medical groups and 1 group practice or clinic.
What is Dr. Joseph N. Mermelstein's office phone number?
The practice phone on file for Dr. Mermelstein is (914) 681-0600.
What is Dr. Joseph N. Mermelstein's medical license number?
Dr. Mermelstein holds New York license 273034.
Which hospitals is Dr. Joseph N. Mermelstein affiliated with?
Dr. Mermelstein practices at White Plains Hospital in White Plains, New York.
What medical group is Dr. Joseph N. Mermelstein part of?
Dr. Mermelstein is linked to Mount Sinai Institute for Liver Medicine. Dmand AI links Dr. Mermelstein to 2 more medical groups.
Does Dr. Joseph N. Mermelstein accept Medicare?
Yes. CMS data shows Dr. Mermelstein billed Medicare for 791 services in 2024, and Dr. Mermelstein accepts Medicare assignment.
Does Dr. Joseph N. Mermelstein offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Mermelstein as offering telehealth services.
What is Dr. Joseph N. Mermelstein's MIPS score?
Dr. Mermelstein's MIPS final score for performance year 2024 is 99 out of 100, reported as part of a group.
Show 6 more questionsShow fewer questions
How many Medicare patients does Dr. Joseph N. Mermelstein see?
CMS counts 478 Medicare patients who saw Dr. Mermelstein in 2024, with an average age of 76.
What services does Dr. Joseph N. Mermelstein bill to Medicare?
In 2024, Dr. Mermelstein's most billed Medicare services were office visit, established patient (99213), office visit, new patient (99204) and surgery: digestive system (43239).
Where did Dr. Joseph N. Mermelstein go to medical school?
Dr. Mermelstein graduated from Icahn School Of Medicine At Mount Sinai in 2011.
What drugs does Dr. Joseph N. Mermelstein prescribe most?
In 2024 Medicare Part D data, Dr. Mermelstein's most prescribed drugs by claims were Pantoprazole Sodium, Omeprazole and Linzess.
Has Dr. Joseph N. Mermelstein received payments from drug or device companies?
CMS Open Payments shows $3,161 in general payments to Dr. Mermelstein from 18 companies from 2018 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Joseph N. Mermelstein been practicing?
Dr. Mermelstein graduated from medical school in 2011, 15 years ago.
Selling to gastroenterology practices?
See gastroenterologists in New York by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card