OFER FASS MD
NPI 1154856714
Internal Medicine - Gastroenterology in Chicago, IL

Q: What is Ofer Fass's NPI number?

The NPI number for Ofer Fass is 1154856714. It was assigned to this individual provider in the NPPES registry on April 20, 2017.

Q: What is Ofer Fass's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for Ofer Fass was last updated on December 17, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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 April 20, 2017PECOS EnrolledAccepts Medicare Assignment

259 E ERIE ST STE 1600, CHICAGO, IL 60611(312) 695-5620(312) 695-2778 Get Directions Write a Review

NPPES record last updated: December 17, 2024. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Dec 17, 2024, Jun 30, 2020, May 8, 2017 and 1 more (4 updates tracked since 2017).

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About Ofer Fass Md NPPES

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

OFER FASS MD (NPI 1154856714) is an individual gastroenterology provider in Chicago, Illinois, licensed in Illinois (036170527) and active in the NPI registry since April 2017. He is enrolled in Medicare PECOS, is affiliated with Northwestern Lake Forest Hospital, and maintains a secondary practice location in New York.

NPPES Registry Identity

NPI1154856714

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameOFER FASSCredential: MD

Location Address259 E ERIE ST STE 1600Chicago, IL 60611-3111

Mailing Address550 1st AveNew York, NY 10016-6402 · (212) 263-5506

Phone(312) 695-5620

Fax(312) 695-2778

Sole ProprietorNo

Medical School CMSHarvard Medical SchoolGraduated 2017

Enumeration DateApril 20, 2017

Last NPPES UpdateDecember 17, 20244 updates tracked since enumeration

NPPES CertifiedDecember 17, 2024

✔ NPI 1154856714 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in IL · 036170527

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

Also ListedInternal MedicineTaxonomy 207R00000X · License 298903 (NY)

259 E ERIE ST STE 1600, Chicago, IL 60611

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Secondary Practice Location 1

Location 1550 1st AveNew York, NY 10016-6402 · Phone (646) 929-7870

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

Ofer Fass 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 ID5294073862

PECOS Enrollment IDI20240802002274

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.

Hospital Affiliations CMS Care Compare 2

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

Northwestern Lake Forest Hospital

Acute Care Hospitals · Lake Forest, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number140130

Location1000 N Westmoreland RoadLake Forest, IL 60045 · Lake County

Emergency services Birthing friendly

Northwestern Memorial Hospital

Acute Care Hospitals · Chicago, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140281

Location251 E Huron StChicago, IL 60611 · Cook County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60611 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

$138.86 typical visit price

range $60.08 – $183.39

Typical copayment $34.71 (range $15.02 – $45.84)

Most-billed visit code 99204

Established Patient

$105.70 typical visit price

range $18.97 – $148.12

Typical copayment $26.42 (range $4.74 – $37.03)

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.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

2 suppliers13 claims13 services$13.72 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

2 suppliers13 claims13 services$62.30 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

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

ATHENA CROWLEY APRN, CNP

Nurse Practitioner