$13,468 in research paymentsHeadacheMigraine DisordersLasmiditan
Dr. Merle L. Diamond, MD
NPI1780676668PAC ID9537295266
- Medicare services, 2024
- 30,528
- Medicare patients, 2024
- 438
- Part D claims, 2024
- 5,580
- Clinical trials
- 1
- MIPS score, 2024
- 21
- Practice address
- 2650 Ridge Ave, Evanston, IL 60201
- Practice phone
- Call (847) 570-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Diamond'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. Merle L. Diamond is an internist in Evanston, Illinois
Dr. Diamond practices at Evanston Hospital in Evanston, Illinois, part of Endeavor Health.
Dr. Diamond's NPI, 1780676668, was assigned on August 17, 2005. Dr. Diamond graduated from Northwestern University Feinberg Medical School in 1980. Dr. Diamond holds Illinois license 036063282.
NPI and contact details
- NPI
- 1780676668NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9537295266
- NPI enumeration date
- August 17, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (847) 570-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 72
- Medical school graduation
- 1980
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Merle L. Diamond practices at Evanston Hospital in Evanston, Illinois
Dr. Diamond's primary practice is Evanston Hospital, at 2650 Ridge Ave, Evanston, IL 60201 in Cook County. The practice phone is (847) 570-2000.
- Evanston Hospital2650 Ridge Ave, Evanston, IL 60201 · Cook CountyPhone(847) 570-2000
Source: Dmand AI Affiliation Data
Dr. Merle L. Diamond is affiliated with 4 sites of care and 1 medical group
Dr. Diamond's primary practice is Evanston Hospital in Evanston, Illinois, part of Endeavor Health. Dr. Diamond is also affiliated with Northwest Community Hospital. The medical group on file is Endeavor Health Medical Group. Dmand AI also links Dr. Diamond to 1 more hospital and 1 group practice or clinic, each named with a free account.
Northwest Community HospitalEndeavor Health Medical Group1 hospitalName with a free account1 group practice or clinicName with a free account
See all 5 affiliations for Dr. DiamondSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Merle L. Diamond's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Diamond practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Evanston Hospital | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every hospital where Dr. Diamond practices
Dmand AI maps EHR vendors, IT decision makers and buying committees across Endeavor Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Merle L. Diamond is one of 5,652 internists in Illinois
Internal medicine is Dr. Diamond's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Diamond is licensed in Illinois.
Specialties and state licenses
- Internal medicine, IllinoisPrimary
Internists near Dr. Diamond
Counts of internists 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. Merle L. Diamond billed Medicare for 30,528 services in 2024
CMS data shows 30,528 Medicare services from Dr. Diamond across 16 procedure codes in 2024, for 438 Medicare patients. Medicare paid $341,746 for them.
Medicare services, 202430,528
Medicare patients438
Paid by Medicare$341,746
Procedure codes16
Dr. Diamond's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 18,2602024: 27,86553%
- Office and hospital visits
- 2023: 2,3842024: 2,00216%
- Other services
- 2023: 02024: 376
- Surgery
- 2023: 822024: 14172%
- Tests and treatments
- 2023: 1102024: 9910%
- Lab and pathology
- 2023: 1052024: 4557%
Where Dr. Diamond's Medicare services took place, 2024
- In an office29,50297%
- In a facility1,0263%
Dr. Diamond compared with the Illinois median for internists, 2024
- Dr. Diamond
- Illinois median
- Medicare services
- 30,528vs 56653.9 times
- Medicare patients
- 438vs 2082.1 times
- Part D claims
- 5,179vs 28418.2 times
Medians across 5,192 internists in Illinois with Dmand AI profiles that report each measure.
Dr. Diamond'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. Diamond?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Diamond and other internists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Merle L. Diamond treated 438 Medicare patients in 2024, average age 65
CMS counts 438 Medicare patients who saw Dr. Diamond in 2024. The largest group is 65 to 74, with 186 patients. 68% of them have high cholesterol, and 58% have arthritis. 6% are also on Medicaid. Their average risk score is 0.94, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Diamond's median patient age at 50, with 81% women.
Medicare patients, 2024438
Average age65
Average risk score0.94
Also on Medicaid6%
Dr. Diamond's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Diamond's Medicare patients by sex, 2024
- Women34579%
- Men9321%
Chronic conditions among Dr. Diamond's Medicare patients, 2024
- High cholesterol68%
- Arthritis58%
- High blood pressure56%
- Mood disorders51%
- Anxiety46%
- Depression46%
- Osteoporosis20%
- Asthma18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Diamond's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 50
Patient panel by sex, all payers
- Women81%
- Men18%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Merle L. Diamond wrote 5,580 Medicare Part D claims in 2024
In 2024, Dr. Diamond wrote 5,580 Medicare Part D claims for 362 patients. 83% of them were for generic drugs. CMS names the drug for 5,179 of them, across 97 drugs with 11 or more claims each, at $1,199,370 in total drug cost. In 2023, CMS named 4,435 claims across 90 drugs.
Part D claims, 20245,580
Drugs named by CMS97
Total drug cost$1.2M
Part D patients362
Dr. Diamond's Part D claims by kind of drug, 2024
- Generic4,647 claims83%
- Brand-name933 claims17%
Dr. Diamond'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. Diamond's Part D claims, 2024
- Opioids2%107 of 5,580 claims
- Antipsychotics, patients 65 and over3%174 of 5,580 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: 4,4352024: 5,17917%
Drugs named by CMS: 97 in 2024, 90 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. Merle L. Diamond scored 21 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 21 out of 100 for Dr. Diamond for performance year 2024, reported individually. Dr. Diamond accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Diamond as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Diamond's MIPS scores, performance year 2024
- 21of 100Final score
- 0of 100Quality
- 0of 100Improvement Activities
- 71of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
For MedTech and pharma teams
Find internists like Dr. Diamond by procedure volume and prescribing
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Merle L. Diamond has worked on 1 clinical trial
Dmand AI links Dr. Diamond to 1 clinical trial. Conditions studied include Headache and Migraine Disorders. Open Payments lists research payments to Dr. Diamond that name 1 trial.
Conditions in Dr. Diamond's trials
- Headache
- Migraine Disorders
Investigators on the most trials with Dr. Diamond
Recent clinical trials with Dr. Diamond
Sources: Open Payments (CMS), 2025 data, released July 7, 2026; ClinicalTrials.gov (National Library of Medicine); and Dmand AI Research Linkage
Dr. Merle L. Diamond received $1,500,473 in industry payments from 2016 to 2025
CMS Open Payments shows 2,778 general payments to Dr. Diamond from 45 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 63% of the total. Eli Lilly and Company paid the most, $314,919. It also lists 5 research payments totaling $16,084 from 2019 to 2020, naming 1 clinical trial.
General payments to Dr. Diamond by program year, 2016 to 2025
General payments to Dr. Diamond by kind, 2016 to 2025
$1.5Min total
- Speaker and faculty fees$940,01363%
- Consulting fees$352,18823%
- Travel and lodging$78,4135%
- Honoraria$72,8505%
- Other$56,9644%
Companies that paid Dr. Diamond 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. Merle L. Diamond graduated from Northwestern University Feinberg Medical School
Dr. Diamond graduated from Northwestern University Feinberg Medical School in 1980.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Merle L. Diamond'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) |
| Clinical trials and co-investigators | ClinicalTrials.gov (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Merle L. Diamond
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. Merle L. Diamond's NPI number?
Dr. Merle L. Diamond's NPI number is 1780676668. It was assigned on August 17, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Merle L. Diamond?
Dr. Merle L. Diamond is an internist in Evanston, Illinois. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Merle L. Diamond practice?
Dr. Diamond practices at 2650 Ridge Ave, Evanston, IL 60201. Dr. Diamond's primary practice is Evanston Hospital in Evanston, Illinois, part of Endeavor Health. Dmand AI also links Dr. Diamond to 1 hospital and 1 group practice or clinic.
What is Dr. Merle L. Diamond's office phone number?
The practice phone on file for Dr. Diamond is (847) 570-2000.
What is Dr. Merle L. Diamond's medical license number?
Dr. Diamond holds Illinois license 036063282.
Which hospitals is Dr. Merle L. Diamond affiliated with?
Dr. Diamond practices at Evanston Hospital in Evanston, Illinois. Dr. Diamond is also affiliated with Northwest Community Hospital. Dmand AI links Dr. Diamond to 1 more hospital.
What medical group is Dr. Merle L. Diamond part of?
Dr. Diamond is linked to Endeavor Health Medical Group.
Does Dr. Merle L. Diamond accept Medicare?
Yes. CMS data shows Dr. Diamond billed Medicare for 30,528 services in 2024, and Dr. Diamond accepts Medicare assignment.
Does Dr. Merle L. Diamond offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Diamond as offering telehealth services.
What is Dr. Merle L. Diamond's MIPS score?
Dr. Diamond's MIPS final score for performance year 2024 is 21 out of 100, reported individually.
Show 7 more questionsShow fewer questions
How many Medicare patients does Dr. Merle L. Diamond see?
CMS counts 438 Medicare patients who saw Dr. Diamond in 2024, with an average age of 65.
What services does Dr. Merle L. Diamond bill to Medicare?
In 2024, Dr. Diamond's most billed Medicare services were injected or infused drug (J0585), hospital inpatient care (99233) and office visit, established patient (99214).
Where did Dr. Merle L. Diamond go to medical school?
Dr. Diamond graduated from Northwestern University Feinberg Medical School in 1980.
What drugs does Dr. Merle L. Diamond prescribe most?
In 2024 Medicare Part D data, Dr. Diamond's most prescribed drugs by claims were Tizanidine HCl, Diphenhydramine HCl and Emgality Pen.
Has Dr. Merle L. Diamond received payments from drug or device companies?
CMS Open Payments shows $1,500,473 in general payments to Dr. Diamond from 45 companies from 2016 to 2025. The largest total came from Eli Lilly and Company.
How long has Dr. Merle L. Diamond been practicing?
Dr. Diamond graduated from medical school in 1980, 46 years ago.
Does Dr. Merle L. Diamond do research?
Dr. Diamond has worked on 1 clinical trial.
Selling to internal medicine practices?
See internists in Illinois 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