MARY FAITH C. TERKILDSEN (MD) – Obstetrics & Gynecology Physician, NPI 1407870199
Obstetrics & Gynecology Physician
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NPPES metrics only — not quality of care.
1,923 OBSTETRICS/GYNECOLOGY in IL
Provider Addresses for MARY FAITH C. TERKILDSEN (MD)
190 WAUKEGAN RD STE B
DEERFIELD, IL 600155655
Phone: (847) 945-4275
Fax: (847) 945-6453
Type: Location
225 N MILWAUKEE AVE
VERNON HILLS, IL 600614304
Phone: (847) 941-7600
Fax: (847) 941-7697
Type: Location
959 S WAUKEGAN RD FL 2
LAKE FOREST, IL 600452654
Phone: (847) 234-3250
Fax: (847) 234-7765
Type: Mailing
Evanston Hospital, 2650, Ridge Avenue, Evanston, Evanston Township, Cook County, Illinois, 60201, United States
EVANSTON HOSPITAL
EVANSTON, IL 602011718
Phone: (847) 570-1206
Fax: (847) 570-1248
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
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: 2005-08-30
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 |
|---|---|---|---|---|
| I20050830000436 | I | Obstetrics/Gynecology | 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 |
|---|---|---|---|---|
| G0101 | Cervical or vaginal cancer screening; pelvic and clinical breast examination | 131 | 131 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 67 | 52 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 55 | 50 | $0 |
| Q0091 | Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory | 29 | 29 | $0 |
Insurance plans in this area (ZIP 60015)
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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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