DR. DIANE FLERSHEM (M.D.) – Internal Medicine Physician, NPI 1447205869
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. DIANE FLERSHEM (M.D.)
3405, North Arlington Heights Road, Arlington Heights, Wheeling Township, Cook County, Illinois, 60004, United States
ARLINGTON HEIGHTS, IL 600041536
Phone: (847) 577-9300
Fax: (847) 577-9318
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 186 Open Payments records for all available years, with a total value of $9,043.
Total Amount is formed as General ($9,043) + Research ($0) + Ownership ($0) = $9,043.
Last reported payment date: 2024-12-10 • Largest payer in this snapshot: ABBVIE INC. ($5,751).
Total Amount
$9,043
General + Research + Ownership
Payments
186
Total payment records
General Amount
$9,043
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-10
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $5,751 |
| PFIZER INC. | $551 |
| Novo Nordisk Inc | $520 |
| Neuronetics, Inc. | $477 |
| GlaxoSmithKline, LLC. | $260 |
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: 2010-10-22
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 |
|---|---|---|---|---|
| I20101022001152 | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 1,066 | 457 | $0 |
| 96372 | Injection of drug or substance under skin or into muscle | 405 | 52 | $0 |
| J3420 | Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg | 405 | 52 | $0 |
| G0439 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 360 | 360 | $0 |
| G0446 | Annual, face-to-face intensive behavioral therapy for cardiovascular disease, individual, 15 minutes | 335 | 335 | $0 |
Insurance plans in this area (ZIP 60004)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| INTERNAL MEDICINE | IL | 90670 | Pneumococcal vaccine for injection into muscle | 70 | 70 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Physician Assistant | IL | |
| Physical Therapist In Private Practice | IL | |
| G A S T R O E N T E R O L O G Y | IL | |
| Physical Therapist In Private Practice | IL | |
| Physical Therapist In Private Practice | IL | |
| Physician Assistant | IL | |
| Internal Medicine | IL | |
| - | IL | |
| Internal Medicine | IL | |
| Internal Medicine | IL |
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