OBADA SHAMAA M.D., PH.D.
NPI 1275980658
Internal Medicine - Pulmonary Disease in Chicago, IL

Active since May 16, 2016PECOS EnrolledAccepts Medicare Assignment
5841 S MARYLAND AVE, MC-7082, CHICAGO, IL 60637(773) 702-6840(773) 702-2230 Get Directions Write a Review

NPPES record last updated: August 6, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 6, 2026, Feb 8, 2023, Nov 22, 2021 and 2 more (5 updates tracked since 2016).

About Obada Shamaa M.d., Ph.d. NPPES

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

OBADA SHAMAA M.D., PH.D. (NPI 1275980658) is an individual pulmonary disease provider in Chicago, Illinois, licensed in Wisconsin (2519) and active in the NPI registry since May 2016. He is enrolled in Medicare PECOS, is affiliated with The University Of Chicago Medical Center, and maintains a secondary practice location in Mattoon.

NPPES Registry Identity

NPI1275980658
Entity TypeIndividualMale
Primary Taxonomy207RP1001X
Provider Legal NameOBADA SHAMAACredential: M.D., PH.D.
Location Address5841 S MARYLAND AVE, MC-7082Chicago, IL 60637-1447
Mailing Address180 Harvester Dr, Suite 110Burr Ridge, IL 60527-7594 · (773) 702-1150 · Fax (773) 702-2230
Fax(773) 702-2230
Sole ProprietorNo
Medical School CMSOhio State University College Of MedicineGraduated 2016
Enumeration DateMay 16, 2016
Last NPPES UpdateAugust 6, 20265 updates tracked since enumeration
NPPES CertifiedAugust 6, 2026
✔ NPI 1275980658 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

★ Primary SpecialtyInternal Medicine · Pulmonary DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RP1001X
Licenses✔ Licensed in WI · 2519✔ Licensed in IL · 036149199
Definition
An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.
Also ListedInternal MedicineTaxonomy 207R00000X · License 125068432 (IL)
Also ListedInternal Medicine · Critical Care MedicineTaxonomy 207RC0200X · License 036149199 (IL), 2519 (WI)
Also ListedHospitalistTaxonomy 208M00000X · License 036-149199 (IL)
5841 S MARYLAND AVE, Chicago, IL 60637

Secondary Practice Location 1

Location 11000 Health Center DrMattoon, IL 61938-4644 · Phone (217) 238-4960 · Fax (217) 238-4951

Accepted Insurance

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

Obada Shamaa M.d., Ph.d. 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 ID5799075438
PECOS Enrollment IDI20210323000901
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

5

Medicare enrollment records show Obada Shamaa reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

General Acute Care Hospital
5841 S MARYLAND AVE
Chicago, IL 60637
  • Reassigned Medicare billing, Illinois enrollment
  • 1,905 clinicians in this Medicare group
Multi-Specialty
5841 S MARYLAND AVE, UCPG/MC 1099
Chicago, IL 60637
  • Reassigned Medicare billing, Illinois enrollment
  • 2,237 clinicians in this Medicare group
Hospitalist
4058 W MELROSE ST
Chicago, IL 60641
  • Reassigned Medicare billing, Illinois enrollment
  • 122 clinicians in this Medicare group
Internal Medicine
S69W15636 JANESVILLE RD
Muskego, WI 53150
  • Reassigned Medicare billing, Wisconsin enrollment
  • 528 clinicians in this Medicare group
Family Medicine
1000 HEALTH CENTER DR
Mattoon, IL 61938
  • Reassigned Medicare billing, Illinois enrollment
  • 652 clinicians in this Medicare group

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.

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.
161 services84 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
43 services23 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.
37 services30 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
15 services15 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.
15 services14 patients

Hospital Affiliations CMS Care Compare 3

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

The University Of Chicago Medical Center

Acute Care Hospitals · Chicago, IL
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140088
Location5841 South MarylandChicago, IL 60637 · Cook County
Emergency services Birthing friendly

Sarah Bush Lincoln Health Center

Acute Care Hospitals · Mattoon, IL
1/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140189
Location1000 Health Center Drive P O Box 372Mattoon, IL 61938 · Coles County
Emergency services Birthing friendly

Ingalls Memorial Hospital

Acute Care Hospitals · Harvey, IL
2/5 CMS rating
OwnershipPhysician
CMS Certification Number140191
Location1 Ingalls DriveHarvey, IL 60426 · Cook County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60637 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.

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
1 supplier12 claims12 services$56.19 avg. paid by Medicare
Portable oxygen concentrator, rental E1392
DME-Oxygen and Supplies · category DC002N
1 supplier12 claims12 services$28.24 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.

Radiology (Diagnostic Radiology)
5841 S MARYLAND AVE
CHICAGO, IL 60637
Internal Medicine
5841 S MARYLAND AVE
CHICAGO, IL 60637
Neurological Surgery
5841 S MARYLAND AVE
CHICAGO, IL 60637
Pathology (Hematology)
5841 S MARYLAND AVE
CHICAGO, IL 60637
Internal Medicine
5841 S MARYLAND AVE
CHICAGO, IL 60637
Internal Medicine
5841 S MARYLAND AVE
CHICAGO, IL 60637
Internal Medicine (Pulmonary Disease)
5841 S MARYLAND AVE
CHICAGO, IL 60637
Internal Medicine (Pulmonary Disease)
5841 S MARYLAND AVE
CHICAGO, IL 60637

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 Obada Shamaa's NPI number?

The NPI number for Obada Shamaa is 1275980658. It was assigned to this individual provider in the NPPES registry on May 16, 2016.

Where is Obada Shamaa located?

Obada Shamaa practices at 5841 S Maryland Ave Mc-7082, Chicago, IL 60637. The listed phone number is (773) 702-6840.

What is Obada Shamaa's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

Is Obada Shamaa enrolled in Medicare?

Yes. Obada Shamaa 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 Obada Shamaa's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Obada Shamaa reassigns Medicare benefits to 5 organizations: The University Of Chicago Medical Center (Chicago, IL), University Of Chicago (Chicago, IL), Knd Development 59 LLC (Chicago, IL), Prohealth Medical Group Inc (Muskego, WI) and Sarah Bush Lincoln Health Center (Mattoon, IL). 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 Obada Shamaa's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Obada Shamaa accept?

Health plans from Dean Health Plan, Network Health and Oscar Health list Obada Shamaa 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 Obada Shamaa affiliated with any hospitals?

According to CMS data, Obada Shamaa is affiliated with The University Of Chicago Medical Center, Sarah Bush Lincoln Health Center and Ingalls Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Obada Shamaa was last updated on August 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.