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DR. ALFRED O GRECO MD
NPI 1073501607
Internal Medicine - Medical Oncology in Shiloh, IL

Active since October 07, 2005PECOS EnrolledAccepts Medicare Assignment
92.39/100
CMS Quality Rating
1418 CROSS ST, DIV IM MEDICAL ONCOLOGY, STE 180, SHILOH, IL 62269(618) 607-1340(618) 622-9724 Get Directions Write a Review

NPPES record last updated: April 21, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 15, 2021, Jun 13, 2019 (2 updates tracked since 2019).

About Dr. Alfred O Greco Md NPPES

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

DR. ALFRED O GRECO MD (NPI 1073501607) is an individual medical oncology provider in Shiloh, Illinois, licensed in Illinois (036125100) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, is affiliated with Alton Memorial Hospital, and is a graduate of Other (1976).

NPPES Registry Identity

NPI1073501607
Entity TypeIndividualMale
Primary Taxonomy207RX0202X
Provider Legal NameDR. ALFRED O GRECOCredential: MD
Location Address1418 CROSS ST, DIV IM MEDICAL ONCOLOGY, STE 180Shiloh, IL 62269-2914
Mailing AddressPo Box 7412011Chicago, IL 60674-2011 · (618) 607-1340 · Fax (618) 622-9724
Phone(618) 607-1340
Fax(618) 622-9724
Sole ProprietorNo
Medical School CMSOtherGraduated 1976
Enumeration DateOctober 7, 2005
Last NPPES UpdateApril 21, 20252 updates tracked since enumeration
✔ NPI 1073501607 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RX0202X
License✔ Licensed in IL · 036125100
Definition
An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.
1418 CROSS ST, Shiloh, IL 62269
Open in Google Maps ↗

Other Identifiers 1

Medicaid201289527MO

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

Dr. Alfred O Greco 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 ID7911892393
PECOS Enrollment IDI20100823000106
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 Reassignments

2

Medicare enrollment records show Alfred Greco reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Washington University Physicians In Illinois, Inc
Same address
Multi-Specialty
1418 CROSS ST STE 180
Shiloh, IL 62269
  • Reassigned Medicare billing, Illinois enrollment
  • 530 clinicians in this Medicare group
NPI 1265029508 (314) 362-7260
Agnesian Healthcare
342 mi
Mental Health (Including Community Mental Health Center)
200 FRONT ST, SUITE 3D
Beaver Dam, WI 53916
  • Reassigned Medicare billing, Wisconsin enrollment
  • 606 clinicians in this Medicare group
NPI 1700817657 (920) 885-2780

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 5

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.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
229 services117 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
122 services90 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
82 services60 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
44 services44 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
29 services29 patients

Hospital Affiliations CMS Care Compare 5

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

Alton Memorial Hospital

Acute Care Hospitals · Alton, IL
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140002
LocationOne Memorial DriveAlton, IL 62002 · Madison County
Emergency services Birthing friendly

Memorial Hospital

Acute Care Hospitals · Belleville, IL
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140185
Location4500 Memorial DriveBelleville, IL 62226 · St. Clair County
Emergency services Birthing friendly

Barnes Jewish Hospital

Acute Care Hospitals · Saint Louis, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number260032
LocationOne Barnes-Jewish Hospital PlazaSaint Louis, MO 63110 · St. Louis City County
Emergency services Birthing friendly

Missouri Baptist Medical Center

Acute Care Hospitals · Town And Country, MO
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260108
Location3015 N Ballas RdTown And Country, MO 63131 · St. Louis County
Emergency services Birthing friendly

Christian Hospital Northeast

Acute Care Hospitals · Saint Louis, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260180
Location11133 Dunn RoadSaint Louis, MO 63136 · St. Louis County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 62269 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
$173.35 typical visit price
range $56.28 – $173.35
Typical copayment $43.33 (range $14.07 – $43.33)
Most-billed visit code 99205
Established Patient
$99.71 typical visit price
range $17.51 – $139.99
Typical copayment $24.92 (range $4.37 – $34.99)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

92.39/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality97.81
Promoting Interoperability100
Improvement Activities40
Cost70.26

Patient Reviews User submitted

Reviews are submitted by site visitors and approved by a human moderator before publication.

Review by Annette ***** December 10, 2025

5/5
I was first sent to Dr. Greco after an endoscopy raised some questions. After several tests, Dr. Greco identified stage 4 lymphoma. and Immunotherapy infusions were ordered. I had 4 of those this past summer and a PET scan in December showed no further issues. He is a great doctor and was always willing to answer any and all questions I had. Everyone in his office is very helpful.
Provider 5/5 Office Staff 5/5
Visited this provider? Share your experience.

Other Providers at the Same Location NPPES 12

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

DR. PAUL KOGAN MD
Urology
1418 CROSS ST, DIV SURG UROLOGY, STE 180
SHILOH, IL 62269
St. Clair County (314) 362-8200
DR. BRETT HOWARD HERZOG MD PHD
Internal Medicine (Medical Oncology)
1418 CROSS ST, DIV IM MEDICAL ONCOLOGY, STE 180
SHILOH, IL 62269
St. Clair County (618) 607-1340
DR. JOHN L VISCONTI DO
Internal Medicine (Medical Oncology)
1418 CROSS ST, DIV IM MEDICAL ONCOLOGY, STE 180
SHILOH, IL 62269
St. Clair County (618) 607-1340
MR. COREY AUSTIN BROOKS PA
Physician Assistant
1418 CROSS ST, DIV IM MEDICAL ONCOLOGY, STE 180
SHILOH, IL 62269
St. Clair County (618) 607-1340
PROTESTANT MEMORIAL MEDICAL CENTER, INC.
Pharmacy (Community/Retail Pharmacy)
1418 CROSS ST
SHILOH, IL 62269
St. Clair County (618) 607-1419
MS. AMANDA D ALLEN AGNP
Nurse Practitioner (Gerontology)
1418 CROSS ST, DIV IM MEDICAL ONCOLOGY, STE 180
SHILOH, IL 62269
St. Clair County (800) 647-2098
DR. WILLIAM JAMES POPOVIC MD
Internal Medicine (Medical Oncology)
1418 CROSS ST, DIV IM MEDICAL ONCOLOGY, STE 180
SHILOH, IL 62269
St. Clair County (618) 607-1340
MS. STACI J LADOWITZ PA
Physician Assistant (Medical)
1418 CROSS ST, STE 160
SHILOH, IL 62269
St. Clair County (618) 607-1340

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 Alfred Greco's NPI number?

The NPI number for Alfred Greco is 1073501607. It was assigned to this individual provider in the NPPES registry on October 7, 2005.

Where is Alfred Greco located?

Alfred Greco practices at 1418 Cross St Div Im Medical Oncology, Ste 180, Shiloh, IL 62269. The listed phone number is (618) 607-1340.

What is Alfred Greco's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Is Alfred Greco enrolled in Medicare?

Yes. Alfred Greco 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 organizations bill Medicare for Alfred Greco's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alfred Greco reassigns Medicare benefits to 2 organizations: Washington University Physicians In Illinois, Inc (Shiloh, IL) and Agnesian Healthcare (Beaver Dam, WI). Each 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 Alfred Greco's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Alfred Greco affiliated with any hospitals?

According to CMS data, Alfred Greco is affiliated with Alton Memorial Hospital, Memorial Hospital, Barnes Jewish Hospital, Missouri Baptist Medical Center and Christian Hospital Northeast.

When was this NPI record last updated?

The NPPES record for Alfred Greco was last updated on April 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.