DR. ANNIE CHRISTIAN GAUF
NPI 1619453453
Obstetrics & Gynecology in Chicago, IL
NPI Status: Active since July 16, 2018
Contact Information
THE NORTHWESTERN SPECIALISTS FOR WOMEN
900 N. KINGSBURY ST. STE 130N
CHICAGO, IL
ZIP 60610
Phone: (312) 775-1100
Fax: (312) 775-1111
Some details in this NPI profile have been updated in the NPI registry within the last 30 days.
- Individual
- Female
- Years of Experience 5
- Obstetrics & Gynecology
- May Accept Medicare Approved Payment
- PECOS Enrolled
About ANNIE GAUF
This page provides the complete NPI Profile along with additional information for Annie Gauf, a women's health care provider established in Chicago, Illinois with a medical specialization in Obstetrics & Gynecology and more than 5 years of experience. She graduated from Emory University School Of Medicine in 2021. The healthcare provider is registered in the NPI registry with number 1619453453 assigned on July 2018. The practitioner's primary taxonomy code is 207V00000X with license number 125077342 (IL). The provider is registered as an individual and her NPI record was last updated September 2025.
- NPI
- 1619453453
- Provider Name
- DR. ANNIE CHRISTIAN GAUF
- Gender
- Female
- Entity Type
- Individual
- Location Address
- THE NORTHWESTERN SPECIALISTS FOR WOMEN 900 N. KINGSBURY ST. STE 130N CHICAGO, IL 60610
- Location Phone
- (312) 775-1100
- Location Fax
- (312) 775-1111
- Mailing Address
- 900 N KINGSBURY ST STE 130N CHICAGO, IL 60610
- Mailing Phone
- (404) 727-5655
- Mailing Fax
- (312) 775-1111
- Medical School Name
- EMORY UNIVERSITY SCHOOL OF MEDICINE
- Graduation Year
- 2021
- Is Sole Proprietor?
- No
- Enumeration Date
- 07-16-2018
- Last Update Date
- 09-05-2025
- Code Navigator
Women's health care providers like Annie Gauf 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.
- 125077342
- 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.
Medicare Participation & PECOS Enrollment Status
Annie Gauf is registered with Medicare but maybe doesn't accept claims assignment. If you are a Medicare beneficiary call and confirm with the provider before seeking any services.
Annie Gauf 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: Durable Medical Equipment (DME) 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
PECOS PAC ID: 7315347887
What is the PECOS Associate Control ID?
A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.PECOS Enrollment ID: I20250709000772
What is the Provider Enrollment ID?
The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.Accepts Medicare Assignment? Maybe
What does it mean "accepts medicare assignment"?
When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.Eligible to Order or Refer Part B Clinical Laboratory and Imaging: No
Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes
Eligible to Order or Refer a Home Health Agency (HHA): No
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 60610 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 | 6 | 1 | 9 | 4 | 5 | 3 | 4 | 5 | 3 |
| Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
| 2 | 6 | 2 | 9 | 8 | 5 | 6 | 4 | 10 | |
| Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
| 2 + 6 + 2 + 9 + 8 + 5 + 6 + 4 + 1 + 0 + 24 = 67 | |||||||||
| Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
| 70 - 67 = 3 | 3 | ||||||||
The NPI number 1619453453 is valid because the calculated check digit 3 using the Luhn validation algorithm matches the last digit of the original NPI number.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1619453453, enumerated in the NPI registry as an "individual" on July 16, 2018
The provider is located at The Northwestern Specialists For Women 900 N. Kingsbury St. Ste 130n Chicago, Il 60610 and the phone number is (312) 775-1100
The provider's speciality is Obstetrics & Gynecology with taxonomy code 207V00000X
The provider has more than 5 years of experience. She graduated from Emory University School Of Medicine in 2021.
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: Durable Medical Equipment (DME) 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 July 16, 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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