DR. ASSUMPTA GRACE TWEKISE MD
NPI 1972950079
Obstetrics & Gynecology in Waterloo, IA

Active since May 18, 2016PECOS EnrolledAccepts Medicare Assignment
3421 W 9TH ST STE G4500, WATERLOO, IA 50702(319) 272-8200(319) 272-0400 Get Directions Write a Review

NPPES record last updated: November 19, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Nov 19, 2025, May 18, 2016 (2 updates tracked since 2016).

About Dr. Assumpta Grace Twekise Md NPPES

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

DR. ASSUMPTA GRACE TWEKISE MD (NPI 1972950079) is an individual obstetrics & gynecology provider in Waterloo, Iowa, licensed in Iowa (MD-46787) and active in the NPI registry since May 2016. She is enrolled in Medicare PECOS, is affiliated with Sartori Memorial Hospital, Inc, and maintains a secondary practice location in Cedar Falls.

NPPES Registry Identity

NPI1972950079
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameDR. ASSUMPTA GRACE TWEKISECredential: MD
Location Address3421 W 9TH ST STE G4500Waterloo, IA 50702-5401
Mailing Address3421 W 9th StWaterloo, IA 50702-5401 · (319) 272-7304 · Fax (319) 272-7318
Fax(319) 272-0400
Sole ProprietorYes
Medical School CMSTulane University School Of MedicineGraduated 2016
Enumeration DateMay 18, 2016
Last NPPES UpdateNovember 19, 20252 updates tracked since enumeration
NPPES CertifiedNovember 19, 2025
NPI 1972950079 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License Licensed in IA · MD-46787
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.

3421 W 9TH ST STE G4500, Waterloo, IA 50702

Secondary Practice Location 1

Location 1226 BLUEBELL RDCEDAR FALLS, IA 50613-6328 · Phone (319) 272-8200 · Fax (319) 272-0058

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted 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

Dr. Assumpta Grace Twekise 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 ID4688097330
PECOS Enrollment IDI20200714000918
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 2

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.

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.
40 services25 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.
39 services24 patients

Hospital Affiliations CMS Care Compare 2

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

Sartori Memorial Hospital, Inc

Acute Care Hospitals · Cedar Falls, IA
OwnershipVoluntary non-profit - Church
CMS Certification Number160040
Location515 College StreetCedar Falls, IA 50613 · Black Hawk County
Emergency services

Mercyone Waterloo Medical Center

Acute Care Hospitals · Waterloo, IA
4/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number160067
Location3421 West Ninth StreetWaterloo, IA 50702 · Black Hawk County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 50702 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
$122.23 typical visit price
range $52.96 – $161.40
Typical copayment $30.55 (range $13.24 – $40.35)
Most-billed visit code 99204
Established Patient
$66.36 typical visit price
range $16.91 – $131.98
Typical copayment $16.59 (range $4.22 – $32.99)
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.

Other Providers at the Same Location NPPES 12

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

Midwife
3421 W 9TH ST STE G4500
WATERLOO, IA 50702
Advanced Practice Midwife
3421 W 9TH ST STE G4500
WATERLOO, IA 50702
Advanced Practice Midwife
3421 W 9TH ST STE G4500
WATERLOO, IA 50702
Obstetrics & Gynecology
3421 W 9TH ST STE G4500
WATERLOO, IA 50702
Physician Assistant
3421 W 9TH ST STE G4500
WATERLOO, IA 50702
Advanced Practice Midwife
3421 W 9TH ST STE G4500
WATERLOO, IA 50702
Advanced Practice Midwife
3421 W 9TH ST STE G4500
WATERLOO, IA 50702
Advanced Practice Midwife
3421 W 9TH ST STE G4500
WATERLOO, IA 50702

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 Assumpta Twekise's NPI number?

The NPI number for Assumpta Twekise is 1972950079. It was assigned to this individual provider in the NPPES registry on May 18, 2016.

Where is Assumpta Twekise located?

Assumpta Twekise practices at 3421 W 9th St Ste G4500, Waterloo, IA 50702. The listed phone number is (319) 272-8200.

What is Assumpta Twekise's specialty?

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

Is Assumpta Twekise enrolled in Medicare?

Yes. Assumpta Twekise 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 Assumpta Twekise accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Home State Health, Ambetter from NH Healthy Families and Ambetter from Sunflower Health Plan and 2 other insurers list Assumpta Twekise 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 Assumpta Twekise affiliated with any hospitals?

According to CMS data, Assumpta Twekise is affiliated with Sartori Memorial Hospital, Inc and Mercyone Waterloo Medical Center.

When was this NPI record last updated?

The NPPES record for Assumpta Twekise was last updated on November 19, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.