MARY FAITH C. TERKILDSEN MD
NPI 1407870199
Obstetrics & Gynecology in Lake Forest, IL

Q: What is Mary Faith Terkildsen's NPI number?

The NPI number for Mary Faith Terkildsen is 1407870199. It was assigned to this individual provider in the NPPES registry on July 26, 2006.

Q: What is Mary Faith Terkildsen's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Active since July 26, 2006PECOS EnrolledAccepts Medicare Assignment

93.08/100

CMS Quality Rating

959 S WAUKEGAN RD FL 2, LAKE FOREST, IL 60045(847) 234-3250(847) 234-7765 Get Directions Write a Review

NPPES record last updated: May 7, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: May 7, 2026, Dec 8, 2020 (2 updates tracked since 2020).

On this page

About Mary Faith C. Terkildsen Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARY FAITH C. TERKILDSEN MD (NPI 1407870199) is an individual obstetrics & gynecology provider in Lake Forest, Illinois, licensed in Illinois (036103018) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS, is affiliated with Northshore University Healthsystem - Evanston Hospital, and is a graduate of Tulane University School Of Medicine (1998).

NPPES Registry Identity

NPI1407870199

Entity TypeIndividualFemale

Primary Taxonomy207V00000X

Provider Legal NameMARY FAITH C. TERKILDSENCredential: MD

Location Address959 S WAUKEGAN RD FL 2Lake Forest, IL 60045-2654

Mailing Address959 S Waukegan Rd Fl 2Lake Forest, IL 60045-2654 · (847) 234-3250 · Fax (847) 234-7765

Phone(847) 234-3250

Fax(847) 234-7765

Sole ProprietorNo

Medical School CMSTulane University School Of MedicineGraduated 1998

Enumeration DateJuly 26, 2006

Last NPPES UpdateMay 7, 20262 updates tracked since enumeration

NPPES CertifiedMay 7, 2026

✔ NPI 1407870199 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians

Taxonomy Code207V00000X

License✔ Licensed in IL · 036103018

Definition

An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.

959 S WAUKEGAN RD FL 2, Lake Forest, IL 60045

Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Home State Health, Ambetter Health, Ambetter Health of Delaware.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mary Faith C. Terkildsen Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6709817604

PECOS Enrollment IDI20050830000436

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Cervical or vaginal cancer screening; pelvic and clinical breast examination G0101

This procedure involves checking for health issues in the lower abdomen and chest area. It helps identify early signs of certain conditions, increasing the chance for successful treatment. It's a routine check-up that's important for maintaining good health.

90 services90 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

63 services49 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

60 services52 patients

Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory Q0091

A Papanicolaou smear, often called a Pap smear, is a test to check for changes in cells. A small sample is gently collected from the lower region and sent to a lab for examination. This helps in early detection of potential health issues.

18 services18 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

15 services13 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Northshore University Healthsystem - Evanston Hospital

Acute Care Hospitals · Evanston, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number140010

Location2650 Ridge AveEvanston, IL 60201 · Cook County

Emergency services Birthing friendly

Northwestern Lake Forest Hospital

Acute Care Hospitals · Lake Forest, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number140130

Location1000 N Westmoreland RoadLake Forest, IL 60045 · Lake County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60045 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$137.43 typical visit price

range $59.81 – $181.38

Typical copayment $34.35 (range $14.95 – $45.34)

Most-billed visit code 99204

Established Patient

$74.38 typical visit price

range $19.15 – $147.12

Typical copayment $18.59 (range $4.78 – $36.78)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

93.08/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored through an Alternative Payment Model

Quality

80.79

Promoting Interoperability

100

Improvement Activities

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CAITLIN GRIFFIN PORTER PA-C

Physician Assistant

959 S WAUKEGAN RD FL 2
LAKE FOREST, IL 60045

Lake County (847) 234-3250

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mary Faith Terkildsen's NPI number?

The NPI number for Mary Faith Terkildsen is 1407870199. It was assigned to this individual provider in the NPPES registry on July 26, 2006.

Where is Mary Faith Terkildsen located?

Mary Faith Terkildsen practices at 959 S Waukegan Rd Fl 2, Lake Forest, IL 60045. The listed phone number is (847) 234-3250.

What is Mary Faith Terkildsen's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Mary Faith Terkildsen enrolled in Medicare?

Yes. Mary Faith Terkildsen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Mary Faith Terkildsen accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Home State Health list Mary Faith Terkildsen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Mary Faith Terkildsen affiliated with any hospitals?

According to CMS data, Mary Faith Terkildsen is affiliated with Northshore University Healthsystem - Evanston Hospital and Northwestern Lake Forest Hospital.

When was this NPI record last updated?

The NPPES record for Mary Faith Terkildsen was last updated on May 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.