MATHANGI R SEKHARAN (MD) – Internal Medicine Physician, NPI 1518959329
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,941 INTERNAL MEDICINE in WI
Provider Addresses for MATHANGI R SEKHARAN (MD)
103 S GREENLEAF ST STE A
GURNEE, IL 600313380
Phone: (847) 623-5855
Fax: (847) 623-6166
Type: Mailing
10256 OLD GREEN BAY RD
PLEASANT PRAIRIE, WI 531582814
Phone: (262) 551-4240
Fax: (262) 551-4245
Type: Location
103 S GREENLEAF ST
SUITE A
GURNEE, IL 600313380
Phone: (847) 623-5855
Fax: (847) 623-6166
Type: Mailing
103 S Greenleaf St
Suite A
Gurnee, IL 600313380
Phone: (847) 623-5855
Fax: (847) 623-6166
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
CMS reports 32 Open Payments records for all available years, with a total value of $669.
Total Amount is formed as General ($669) + Research ($0) + Ownership ($0) = $669.
Last reported payment date: 2024-12-10 • Largest payer in this snapshot: PFIZER INC. ($133).
Total Amount
$669
General + Research + Ownership
Payments
32
Total payment records
General Amount
$669
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 |
|---|---|
| PFIZER INC. | $133 |
| AstraZeneca Pharmaceuticals LP | $98 |
| SANOFI-AVENTIS U.S. LLC | $69 |
| ABBVIE INC. | $58 |
| Dexcom, Inc. | $44 |
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: 2024-09-10
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20101130001186 | I | Internal Medicine | IL | TBD |
| I20240910004083 | I | Internal Medicine | WI | 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 | 578 | 234 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 259 | 150 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 187 | 118 | $0 |
| 99497 | Advance care planning, first 30 minutes | 186 | 186 | $0 |
| G0442 | Annual alcohol misuse screening, 5 to 15 minutes | 183 | 183 | $0 |
Insurance plans in this area (ZIP 60031)
Loading plans...
Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| INTERNAL MEDICINE | IL | 90670 | Pneumococcal vaccine for injection into muscle | 14 | 14 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| E N D O C R I N O L O G Y | WI | |
| Hospitalist, Family Practice | WI | |
| Diagnostic Radiology | WI | |
| - | WI | |
| Nurse Practitioner | WI | |
| Nurse Practitioner | WI | |
| Nurse Practitioner | IL | |
| O B S T E T R I C S/ G Y N E C O L O G Y | WI | |
| Pulmonary Disease | WI | |
| Physician Assistant | IN |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.