DR. SARA JEAN TWIEHAUS D.O.
NPI 1285128926
Obstetrics & Gynecology in Chicago, IL
NPI Status: Active since June 17, 2018
Contact Information
2001 S CALIFORNIA AVE STE 100
CHICAGO, IL
ZIP 60608
Phone: (773) 584-6200
- Individual
- Female
- Obstetrics & Gynecology
- Accepts Insurance
- PECOS Enrolled
About SARA TWIEHAUS
This page provides the complete NPI Profile along with additional information for Sara Twiehaus, a women's health care provider established in Chicago, Illinois with a medical specialization in Obstetrics & Gynecology. The healthcare provider is registered in the NPI registry with number 1285128926 assigned on June 2018. The practitioner's primary taxonomy code is 207V00000X with license number 125.073145 (IL). The provider is registered as an individual and her NPI record was last updated 3 years ago.
- NPI
- 1285128926
- Provider Name
- DR. SARA JEAN TWIEHAUS D.O.
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 2001 S CALIFORNIA AVE STE 100 CHICAGO, IL 60608
- Location Phone
- (773) 584-6200
- Mailing Address
- 2001 S CALIFORNIA AVE STE 100 CHICAGO, IL 60608
- Mailing Phone
- (612) 590-3884
- Is Sole Proprietor?
- No
- Enumeration Date
- 06-17-2018
- Last Update Date
- 09-27-2022
- Code Navigator
Women's health care providers like Sara Twiehaus treat and diagnose diseases and conditions that affect a woman's physical and emotional health. Women's health professionals come from a variety of different specialties, including obstetrician/gynecologists, general surgeons, perinatologists, physician assistants, nurse practitioners or nurse midwives. A women's health provider might help you with family planning, breast care, pregnancy and child birth, osteoporosis, menopause, heart disease, etc.
Location Map
Specialty - Primary Taxonomy
The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.
- Classification
Obstetrics & Gynecology
- Taxonomy Code
- 207V00000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- 125.073145
- License State
- IL
- Taxonomy Description
- 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.
Secondary Taxonomies
The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.
| No. | Taxonomy Code | Type | Classification / Specialization |
License No. (State) |
|---|---|---|---|---|
| 1 | 207V00000X | Allopathic & Osteopathic Physicians | Obstetrics & Gynecology | 036.161001 (IL) |
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
- Bronze 1 Advanced: Aetna network + $0 MinuteClinic + $0 CVS Health Virtual Primary Care + Rx Copay - HMO
- Bronze 4 Advanced: $0 PCP + Aetna network + $0 MinuteClinic + $0 CVS Health Virtual Primary Care - HMO
- Bronze 4 Advanced: $0 PCP + Aetna network + $0 MinuteClinic + Adult Dental + Vision - HMO
- Bronze S: Aetna network + $0 MinuteClinic + $0 CVS Health Virtual Primary Care - HMO
- Gold 10 Advanced: $0 PCP + Aetna network + $0 MinuteClinic + $0 CVS Health Virtual Primary Care - HMO
- Gold 10 Advanced: $0 PCP + Aetna network + $0 MinuteClinic + Adult Dental + Vision - HMO
- Gold 3 Advanced: Aetna network + $0 MinuteClinic + $0 CVS Health Virtual Primary Care + Rx Copay - HMO
- Gold 3 Advanced: Aetna network + $0 MinuteClinic + Adult Dental + Vision + Rx Copay - HMO
- Gold S: Aetna network + $0 MinuteClinic + $0 CVS Health Virtual Primary Care + Rx Copay - HMO
- Gold S: Aetna network + $0 MinuteClinic + $0 CVS Health Virtual Primary Care + Rx Copay - PPO
- Complete Gold - EPO
- Complete Gold + Vision + Adult Dental - EPO
- Complete Silver - EPO
- Complete Silver + Vision + Adult Dental - EPO
- Elite Bronze - EPO
- Elite Bronze + Vision + Adult Dental - EPO
- Everyday Bronze - EPO
- Everyday Bronze + Vision + Adult Dental - EPO
- Everyday Gold - EPO
- Everyday Gold + Vision + Adult Dental - EPO
- Choice Bronze HSA - HMO
- Choice Bronze HSA + Vision + Adult Dental - HMO
- Clear Silver - HMO
- Complete Gold - HMO
- Complete Gold + Vision + Adult Dental - HMO
- Elite Bronze - HMO
- Elite Bronze + Vision + Adult Dental - HMO
- Elite Gold - HMO
- Elite Gold + Vision + Adult Dental - HMO
- Elite Silver - HMO
- Clear Gold - EPO
- Clear Gold + Vision + Adult Dental - EPO
- Complete Gold - EPO
- Complete Gold + Vision + Adult Dental - EPO
- Elite Silver - EPO
- Elite Silver + Vision + Adult Dental - EPO
- Everyday Bronze - EPO
- Everyday Bronze + Vision + Adult Dental - EPO
- Focused Silver - EPO
- Focused Silver + Vision + Adult Dental - EPO
- Central Bronze - HMO
- Central Bronze + Vision + Adult Dental - HMO
- Central Gold - HMO
- Central Gold + Vision + Adult Dental - HMO
- Clear Silver - HMO
- Everyday Bronze - HMO
- Everyday Bronze + Vision + Adult Dental - HMO
- Everyday Gold - HMO
- Everyday Gold + Vision + Adult Dental - HMO
- Focused Silver - HMO
- Blue Choice Preferred Bronze PPO? 201 - PPO
- Blue Choice Preferred Bronze PPO? 701 - PPO
- Blue Choice Preferred Bronze PPO? Standard - Select Rx Copays - PPO
- Blue Choice Preferred Gold PPO? 204 - PPO
- Blue Choice Preferred Gold PPO? 901 - PPO
- Blue Choice Preferred Gold PPO? Standard - Rx Copays - PPO
- Blue Choice Preferred Security PPO? 200 - PPO
- Blue Choice Preferred Silver PPO? 203 - PPO
- Blue Choice Preferred Silver PPO? 801 - PPO
- Blue Choice Preferred Silver PPO? Standard - Select Rx Copays - PPO
- Gold 1 - HMO
- Gold 1 with Adult Vision Services - HMO
- Gold 8 with Rx Copay - HMO
- Silver 1 - HMO
- Silver 1 with Rx Copay and Adult Vision Services - HMO
- Silver 12 with first 4 free PCP or MH visits - HMO
- Silver 8 - HMO
- Bronze Classic 4700 (Select) - HMO
- Bronze Classic PCP Saver Plus Rx Copay (Select) - HMO
- Bronze Classic Standard (Choice) - HMO
- Bronze Classic Standard (Select) - HMO
- Gold Classic Standard (Choice) - HMO
- Gold Classic Standard (Select) - HMO
- Secure (Choice) - HMO
- Silver Classic Standard (Choice) - HMO
- Silver Classic Standard (Select) - HMO
- Silver Elite Saver Plus Rx Copay (Select) - HMO
- UHC Bronze Copay Focus (No Referrals) - HMO
- UHC Bronze Standard (No Referrals) - HMO
- UHC Bronze Value (Rx Copay, No Referrals) - HMO
- UHC Gold Copay Focus (No Referrals) - HMO
- UHC Gold Standard (Rx Copay, No Referrals) - HMO
- UHC Silver Advantage (Rx Copay, No Referrals) - HMO
- UHC Silver Advantage+ (Rx Copay, Dental + Vision, No Referrals) - HMO
- UHC Silver Copay Focus (No Referrals) - HMO
- UHC Silver Standard (No Referrals) - HMO
*Please verify directly with this provider to make sure your insurance plan is currently accepted.
Medicare Participation & PECOS Enrollment Status
Sara Twiehaus is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.
What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.
Is the provider registered in PECOS? Yes
Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes
Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes
Eligible to Order or Refer a Home Health Agency (HHA): Yes
Eligible to Order or Refer Power Mobility Devices: Yes
Physician Visit Costs
The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.
For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.
The prices below reflect the costs for new and established patients in the 60608 ZIP code area.
New Patients Visit Costs *
The most utilized procedure code for new patients office visits is 99204
- Average New Patient Price $138.86
- Minimum New Patient Price $60.08
- Maximum New Patient Price $183.39
- Average New Patient Copayment $34.71
- Minimum New Patient Copayment $15.02
- Maximum New Patient Copayment $45.84
Established Patients Visit Costs *
The most utilized procedure code for established patients office visits is 99213
- Average Established Patient Price $74.8
- Minimum Established Patient Price $18.97
- Maximum Established Patient Price $148.12
- Average Established Patient Copayment $18.7
- Minimum Established Patient Copayment $4.74
- Maximum Established Patient Copayment $37.03
* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.
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NPI Validation Check Digit Calculation
The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.
| Start with the original NPI number, the last digit is the check digit and is not used in the calculation. | |||||||||
| 1 | 2 | 8 | 5 | 1 | 2 | 8 | 9 | 2 | 6 |
| Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
| 2 | 2 | 16 | 5 | 2 | 2 | 16 | 9 | 4 | |
| Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
| 2 + 2 + 1 + 6 + 5 + 2 + 2 + 1 + 6 + 9 + 4 + 24 = 64 | |||||||||
| Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
| 70 - 64 = 6 | 6 | ||||||||
The NPI number 1285128926 is valid because the calculated check digit 6 using the Luhn validation algorithm matches the last digit of the original NPI number.
Other Providers at the Same Location
The following 15 providers are registered at the same or nearby location.
| NPI | Name / Type | Taxonomy | Address |
|---|---|---|---|
| 1902135775 | SONIA CRUZ TORRES LCSW Individual | Social Worker (Clinical) | 2001 S CALIFORNIA AVE STE 100 CHICAGO, IL 60608 (773) 584-6132 |
| 1073069266 | PAOLA SEGUIL M.S., R.D., L.D.N. Individual | Dietitian, Registered | 2001 S CALIFORNIA AVE STE 100 CHICAGO, IL 60608 (773) 640-5784 |
| 1376048488 | LABORATORY CORPORATION OF AMERICA Organization | Clinical Medical Laboratory | 2001 S CALIFORNIA AVE STE 100 CHICAGO, IL 60608 (773) 523-2549 |
| 1952957896 | ANGELINA BRAVO FNP-BC Individual | Nurse Practitioner (Family) | 2001 S CALIFORNIA AVE STE 100 CHICAGO, IL 60608 (773) 584-6200 |
| 1629156559 | MARK D MINIER MD Individual | Pediatrics | 2001 S CALIFORNIA AVE STE 100 CHICAGO, IL 60608 (773) 584-6200 |
| 1235786336 | MELISSA PAIGE MARTINEZ APRN Individual | Nurse Practitioner (Family) | 2001 S CALIFORNIA AVE STE 100 CHICAGO, IL 60608 (773) 584-6200 |
| 1275149502 | GEORGINA HARO LCSW Individual | Counselor (Mental Health) | 2001 S CALIFORNIA AVE STE 100 CHICAGO, IL 60608 (773) 584-6200 |
| 1952887093 | DEMETRIUS MARCOULIDES NP Individual | Nurse Practitioner (Primary Care) | 2001 S CALIFORNIA AVE STE 100 CHICAGO, IL 60608 (773) 584-6200 |
| 1639672405 | DR. HANNAH L HARP MD Individual | Pediatrics | 2001 S CALIFORNIA AVE STE 100 CHICAGO, IL 60608 (773) 584-6200 |
| 1699440891 | BECKY DENISE SERNA MSN, APRN, FNP-C Individual | Nurse Practitioner (Family) | 2001 S CALIFORNIA AVE STE 100 CHICAGO, IL 60608 (773) 584-6200 |
| 1093008443 | MS. JESSICA LINDSAY BOLAND LCSW Individual | Social Worker (Clinical) | 2001 S CALIFORNIA AVE STE 100 CHICAGO, IL 60608 (773) 916-4437 |
| 1851985824 | KALINEE HANSEN ALSTON PA-C Individual | Physician Assistant (Medical) | 2001 S CALIFORNIA AVE STE 100 CHICAGO, IL 60608 (773) 584-6200 |
| 1578067815 | MARIA LAURA CASALEGNO MD Individual | Internal Medicine | 2001 S CALIFORNIA AVE STE 100 CHICAGO, IL 60608 (773) 584-6200 |
| 1720616444 | MELANIE KARPMAN PA-C Individual | Physician Assistant | 2001 S CALIFORNIA AVE STE 100 CHICAGO, IL 60608 (773) 584-6200 |
| 1447978887 | DR. MIGLENA GARKOVA FNP Individual | Nurse Practitioner (Family) | 2001 S CALIFORNIA AVE STE 100 CHICAGO, IL 60608 (773) 584-6200 |
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1285128926, enumerated in the NPI registry as an "individual" on June 17, 2018
The provider is located at 2001 S California Ave Ste 100 Chicago, Il 60608 and the phone number is (773) 584-6200
The provider's speciality is Obstetrics & Gynecology with taxonomy code 207V00000X
The provider might be accepting Accepts: Aetna CVS Health, Ambetter from Home State Health,. Please consult your insurance carrier or call the provider to make sure your health plan is currently accepted.
Yes, as of June 20, 2025 the provider is registered in PECOS and is eligible to order health care services or supplies for Medicare patients. If you are a beneficiary the provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.
Medicare beneficiaries should expect a typical cost of $138.86 with an average copayment of $34.71 for new patient appointments. Established patients should expect a typical charge of $74.8 and an average copayment of 18.7. Please review your insurance plan or contact the provider directly to determine your specific costs.
This NPI record was last updated on June 17, 2018. To officially update your NPI information contact the National Plan and Provider Enumeration System (NPPES) at 1-800-465-3203 (NPI Toll-Free) or by email at [email protected].
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