BASIL S HERNANDEZ MD
NPI 1144327602
Hospitalist in Downers Grove, IL

Q: What is Basil Hernandez's NPI number?

The NPI number for Basil Hernandez is 1144327602. It was assigned to this individual provider in the NPPES registry on September 19, 2006.

Q: What is Basil Hernandez's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Q: When was this NPI record last updated?

The NPPES record for Basil Hernandez was last updated on August 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.

Active since September 19, 2006PECOS EnrolledAccepts Medicare Assignment

3815 HIGHLAND AVE STE G130A, DOWNERS GROVE, IL 60515(312) 609-0300(630) 275-6075 Get Directions Write a Review

NPPES record last updated: August 25, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jun 10, 2025, Dec 28, 2021, Mar 28, 2017 and 1 more (4 updates tracked since 2017).

On this page

About Basil S Hernandez Md NPPES

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

BASIL S HERNANDEZ MD (NPI 1144327602) is an individual hospitalist provider in Downers Grove, Illinois, licensed in Illinois (036-116747) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, is affiliated with Advocate Good Samaritan Hospital, and is a graduate of Saint Louis University School Of Medicine (2003).

NPPES Registry Identity

NPI1144327602

Entity TypeIndividualMale

Primary Taxonomy208M00000X

Provider Legal NameBASIL S HERNANDEZCredential: MD

Location Address3815 HIGHLAND AVE STE G130ADowners Grove, IL 60515-1500

Mailing Address29373 Network PlChicago, IL 60673-1285

Phone(312) 609-0300

Fax(630) 275-6075

Sole ProprietorNo

Medical School CMSSaint Louis University School Of MedicineGraduated 2003

Enumeration DateSeptember 19, 2006

Last NPPES UpdateAugust 25, 20254 updates tracked since enumeration

NPPES CertifiedAugust 25, 2025

✔ NPI 1144327602 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians

Taxonomy Code208M00000X

License✔ Licensed in IL · 036-116747

Definition

Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

Also ListedInternal MedicineTaxonomy 207R00000X · License 036-116747 (IL)

3815 HIGHLAND AVE STE G130A, Downers Grove, IL 60515

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Other Identifiers 1

Other36116747License

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Basil S Hernandez 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 ID840297875

PECOS Enrollment IDI20061103000286

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.

Medicare Billing Reassignment

Medicare enrollment records show Basil Hernandez reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Advocate Health And Hospitals Corporation

Same address

General Acute Care Hospital

3815 HIGHLAND AVE
Downers Grove, IL 60515

Reassigned Medicare billing, Illinois enrollment
Also billed through NPI 1003542184 (Illinois)
4,870 clinicians in this Medicare group

NPI 1578670543 (630) 275-5900

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 4

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

218 services101 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

175 services107 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

132 services126 patients

Hospital discharge day management, more than 30 minutes 99239

Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.

126 services119 patients

Hospital Affiliations CMS Care Compare

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

Advocate Good Samaritan Hospital

Acute Care Hospitals · Downers Grove, IL

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140288

Location3815 Highland AvenueDowners Grove, IL 60515 · Du Page County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60515 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

$105.07 typical visit price

range $19.15 – $147.12

Typical copayment $26.26 (range $4.78 – $36.78)

Most-billed visit code 99214

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 2

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

NISHA NAYAK NP

Nurse Practitioner

3815 HIGHLAND AVE STE G130A
DOWNERS GROVE, IL 60515

Dupage County (312) 609-0300

DR. ARSALAN JAWED KHAN M.D.

Hospitalist

3815 HIGHLAND AVE STE G130A
DOWNERS GROVE, IL 60515

Dupage County (312) 609-0300

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 Basil Hernandez's NPI number?

The NPI number for Basil Hernandez is 1144327602. It was assigned to this individual provider in the NPPES registry on September 19, 2006.

Where is Basil Hernandez located?

Basil Hernandez practices at 3815 Highland Ave Ste G130a, Downers Grove, IL 60515. The listed phone number is (312) 609-0300.

What is Basil Hernandez's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Basil Hernandez enrolled in Medicare?

Yes. Basil Hernandez 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.

Which organization bills Medicare for Basil Hernandez's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Basil Hernandez reassigns Medicare benefits to Advocate Health And Hospitals Corporation (Downers Grove, IL). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Basil Hernandez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Basil Hernandez affiliated with any hospitals?

According to CMS data, Basil Hernandez is affiliated with Advocate Good Samaritan Hospital.

When was this NPI record last updated?

The NPPES record for Basil Hernandez was last updated on August 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.