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DR. AHMED N HASSAN MD
NPI 1548426745
Internal Medicine - Critical Care Medicine in Naperville, IL

Active since August 06, 2008PECOS EnrolledAccepts Medicare Assignment
801 S. WASHINGTON ST, 6TH FLOOR CNICU, NAPERVILLE, IL 60540(630) 527-7235 Get Directions Write a Review

NPPES record last updated: February 4, 2021. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Ahmed N Hassan Md NPPES

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

DR. AHMED N HASSAN MD (NPI 1548426745) is an individual critical care medicine provider in Naperville, Illinois, licensed in Illinois (036121123) and active in the NPI registry since August 2008. He is enrolled in Medicare PECOS, is affiliated with Elmhurst Memorial Hospital, and maintains a secondary practice location in Chicago.

NPPES Registry Identity

NPI1548426745
Entity TypeIndividualMale
Primary Taxonomy207RC0200X
Provider Legal NameDR. AHMED N HASSANCredential: MD
Location Address801 S. WASHINGTON ST, 6TH FLOOR CNICUNaperville, IL 60540-6054
Mailing Address801 S. Washington St, 6th Floor CnicuNaperville, IL 60540 · (630) 527-7235
Phone(630) 527-7235
Sole ProprietorNo
Medical School CMSUniversity Of Missouri, Kansas City, School Of MedicineGraduated 1998
Enumeration DateAugust 6, 2008
Last NPPES UpdateFebruary 4, 2021
NPPES CertifiedJanuary 19, 2021
✔ NPI 1548426745 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Critical Care MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RC0200X
License✔ Licensed in IL · 036121123
Definition
An internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.
Also ListedPsychiatry & Neurology · NeurologyTaxonomy 2084N0400X · License 2010030926 (MO)
801 S. WASHINGTON ST, Naperville, IL 60540
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Secondary Practice Location 1

Location 1912 S Wood St, M/C 796Chicago, IL 60612-4300 · Phone (312) 355-1528 · Fax (312) 413-8215

Other Identifiers 5

OtherCA4748IL · Medicare Railroad (group)
Other206147244IL · Medicare Ptan (individual)
Medicaid010030926IL
OtherP01308445IL · Medicare Railroad (individual)
Other206147IL · Medicare Ptan (group)

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Home State Health, Ambetter Health, Ambetter Health of Delaware.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. Ahmed N Hassan 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 ID8123179348
PECOS Enrollment IDI20090630000202
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 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.

Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
377 services133 patients
Critical care, each additional 30 minutes 99292
Critical care refers to special attention given to patients facing life-threatening conditions. Each additional 30 minutes indicates the extension of this specialized care. This might include close monitoring, medication adjustments, and immediate interventions as needed.
153 services71 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.
93 services92 patients
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.
24 services14 patients

Hospital Affiliations CMS Care Compare 2

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

Elmhurst Memorial Hospital

Acute Care Hospitals · Elmhurst, IL
4/5 CMS rating
OwnershipProprietary
CMS Certification Number140200
Location155 East Brush Hill RoadElmhurst, IL 60126 · Du Page County
Emergency services Birthing friendly

Edward Hospital

Acute Care Hospitals · Naperville, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140231
Location801 South WashingtonNaperville, IL 60540 · Du Page County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60540 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.

MATTHEW MICHAEL DUNNE M.D.
Hospitalist
801 S. WASHINGTON ST, 3RD FLOOR
NAPERVILLE, IL 60540
Dupage County (630) 527-5359
DR. LINDA E MUELLER MD
Emergency Medicine
801 S. WASHINGTON ST, EMERGENCY MEDICINE
NAPERVILLE, IL 60540
Dupage County (630) 527-3000

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 Ahmed Hassan's NPI number?

The NPI number for Ahmed Hassan is 1548426745. It was assigned to this individual provider in the NPPES registry on August 6, 2008.

Where is Ahmed Hassan located?

Ahmed Hassan practices at 801 S. Washington St 6th Floor Cnicu, Naperville, IL 60540. The listed phone number is (630) 527-7235.

What is Ahmed Hassan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.

Is Ahmed Hassan enrolled in Medicare?

Yes. Ahmed Hassan 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 Ahmed Hassan accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Home State Health list Ahmed Hassan 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 Ahmed Hassan affiliated with any hospitals?

According to CMS data, Ahmed Hassan is affiliated with Elmhurst Memorial Hospital and Edward Hospital.

When was this NPI record last updated?

The NPPES record for Ahmed Hassan was last updated on February 4, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.