DR. MERLE L DIAMOND (MD) – Internal Medicine Physician, NPI 1780676668
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
8,824 INTERNAL MEDICINE in IL
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Provider Addresses for DR. MERLE L DIAMOND (MD)
North Halsted Street, Mid-North District, Lincoln Park, Chicago, Cook County, Illinois, 60614, United States
CHICAGO, IL 606422615
Phone: (773) 388-6390
Fax: (312) 867-7101
Type: Location
2650 RIDGE AVE STE 1223
EVANSTON, IL 602011700
Phone: (847) 570-2040
Fax: (847) 733-5315
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 473 Open Payments records for all available years, with a total value of $250,728.
Total Amount is formed as General ($250,728) + Research ($0) + Ownership ($0) = $250,728.
Last reported payment date: 2024-12-20 • Largest payer in this snapshot: ABBVIE INC. ($150,367).
Total Amount
$250,728
General + Research + Ownership
Payments
473
Total payment records
General Amount
$250,728
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-20
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $150,367 |
| Teva Pharmaceuticals USA, Inc. | $29,010 |
| Lilly USA, LLC | $22,903 |
| Lundbeck LLC | $19,916 |
| PFIZER INC. | $13,003 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2010-06-16
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20100616000055 | I | Internal Medicine | IL | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| J0585 | Injection, onabotulinumtoxina, 1 unit | 18,072 | 42 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 1,239 | 100 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 772 | 358 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 137 | 96 | $0 |
| 96372 | Injection of drug or substance under skin or into muscle | 110 | 41 | $0 |
Insurance plans in this area (ZIP 60642)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | IL | |
| E N D O C R I N O L O G Y | IL | |
| N E U R O L O G Y | IL | |
| Hospitalist, Internal Medicine | IL | |
| O P H T H A L M O L O G Y | IL | |
| - | IL | |
| E N D O C R I N O L O G Y | IL | |
| Cardiovascular Disease (Cardiology), Interventional Cardiology | IL | |
| Clinical Social Worker | IL | |
| Certified Nurse Midwife (Cnm) | IL |
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