MS. MARIA CARIDAD AGUILERA ASTUDILLO MD
NPI 1164040887
Internal Medicine - Endocrinology, Diabetes & Metabolism in Sycamore, IL
NPI Status: Active since July 09, 2020
Contact Information
1850 GATEWAY DR STE 205
SYCAMORE, IL
ZIP 60178
Phone: (815) 754-1097
Fax: (815) 748-8957
- Individual
- Female
- Years of Experience 10
- Internal Medicine
- Endocrinology, Diabetes & Metabolism
- Accepts Medicare Approved Payment
- PECOS Enrolled
About MARIA AGUILERA ASTUDILLO
This page provides the complete NPI Profile along with additional information for Maria Aguilera Astudillo, an internist established in Sycamore, Illinois with a medical specialization in Internal Medicine, focusing in endocrinology, diabetes & metabolism and more than 10 years of experience. The healthcare provider is registered in the NPI registry with number 1164040887 assigned on July 2020. The practitioner's primary taxonomy code is 207RE0101X with license number 036173844 (IL). The provider is registered as an individual and her NPI record was last updated one year ago.
- NPI
- 1164040887
- Provider Name
- MS. MARIA CARIDAD AGUILERA ASTUDILLO MD
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 1850 GATEWAY DR STE 205 SYCAMORE, IL 60178
- Location Phone
- (815) 754-1097
- Location Fax
- (815) 748-8957
- Mailing Address
- 1850 GATEWAY DR STE 205 SYCAMORE, IL 60178
- Mailing Phone
- (815) 754-1097
- Mailing Fax
- (815) 748-8957
- Medical School Name
- OTHER
- Graduation Year
- 2016
- Is Sole Proprietor?
- No
- Enumeration Date
- 07-09-2020
- Last Update Date
- 09-23-2025
- Code Navigator
An internist like Maria Aguilera Astudillo is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, 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
Internal Medicine Endocrinology, Diabetes & Metabolism
- Taxonomy Code
- 207RE0101X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- 036173844
- License State
- IL
- Taxonomy Description
- An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
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 | 207R00000X | Allopathic & Osteopathic Physicians | Internal Medicine | 036173844 (IL) |
Medicare Participation & PECOS Enrollment Status
Maria Aguilera Astudillo is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.
Maria Aguilera Astudillo 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
PECOS PAC ID: 9638678634
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: I20250818000610
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? Yes
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: 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 typical physician office visit costs for Medicare beneficiaries in this area are: $31.86 for a new patient copayment and $24.31 for an established patient copayment.
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 60178 ZIP code area.
New Patients Visit Costs *
The most utilized procedure code for new patients office visits is 99204
- Average New Patient Price $127.46
- Minimum New Patient Price $54.8
- Maximum New Patient Price $168.44
- Average New Patient Copayment $31.86
- Minimum New Patient Copayment $13.7
- Maximum New Patient Copayment $42.11
Established Patients Visit Costs *
The most utilized procedure code for established patients office visits is 99214
- Average Established Patient Price $97.25
- Minimum Established Patient Price $17.16
- Maximum Established Patient Price $136.56
- Average Established Patient Copayment $24.31
- Minimum Established Patient Copayment $4.29
- Maximum Established Patient Copayment $34.14
* 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.
Find Provider Hospital Affiliations - Privileges
Doctors and physicians must apply for hospital privileges to treat patients at hospitals. Find out if your doctor has privileges to practice at your preferred hospital by using the hospital affiliation information below based on recent medical claims.
Hospital affiliation is identified through self-reporting data, inpatient, outpatient, physician and ancillary service claims linked by the medical claims NPI number and place of service code. Additionally, to further determine provider hospital affiliation the clinician must have provided services to at least three patients on three different dates in the last 12 months. Maria Aguilera Astudillo is affiliated with the following medical facilities:
| Hospital Name | Address | Phone | Hospital Type | Overall Rating |
|---|---|---|---|---|
| NORTHWESTERN MEDICINE CENTRAL DUPAGE HOSPITAL | 25 NORTH WINFIELD ROAD WINFIELD, IL 60190 | (630) 682-1600 | Acute Care Hospitals | |
| NORTHWESTERN MEDICINE KISHWAUKEE HOSPITAL | ONE KISH HOSPITAL DRIVE DEKALB, IL 60115 | (815) 756-1521 | Acute Care Hospitals |
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NPI NPI Number Validation
How NPI Validation Works
The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.
To verify the NPI 1164040887, we treat the final digit (7) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 53. The final step is to find the difference between that total and the next multiple of ten (60 - 53 = 7).
Digit-by-digit view
Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.
Step 1: Double every other digit from the right
Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 53 is 60. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1164040887, enumerated as an "individual" on July 09, 2020.
The provider is located at 1850 GATEWAY DR STE 205 SYCAMORE, IL 60178 and the phone number is (815) 754-1097.
Internal Medicine with taxonomy code 207RE0101X and a focus in Endocrinology, Diabetes & Metabolism.
Maria Aguilera Astudillo is affiliated with: NORTHWESTERN MEDICINE CENTRAL DUPAGE HOSPITAL and NORTHWESTERN MEDICINE KISHWAUKEE HOSPITAL.