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KAREN IMMA C GELLADA MD
NPI 1285897967
Preventive Medicine - Undersea and Hyperbaric Medicine in Byron, IL

Active since July 03, 2008PECOS EnrolledAccepts Medicare Assignment

NPPES record last updated: January 28, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jan 28, 2026, Jun 30, 2025, Jun 26, 2025 and 2 more (5 updates tracked since 2024).

About Karen Imma C Gellada Md NPPES

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

KAREN IMMA C GELLADA MD (NPI 1285897967) is an individual undersea and hyperbaric medicine provider in Byron, Illinois, licensed in Illinois (036-127497) and active in the NPI registry since July 2008. She is enrolled in Medicare PECOS, is affiliated with Advocate Sherman Hospital, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1285897967
Entity TypeIndividualFemale
Primary Taxonomy2083P0011X
Provider Legal NameKAREN IMMA C GELLADACredential: MD
Location Address130 KYSOR DRByron, IL 61010-9402
Mailing Address130 Kysor DrByron, IL 61010-9402 · (815) 971-2000
Phone(309) 672-4977
Sole ProprietorNo
Medical School CMSOtherGraduated 2006
Enumeration DateJuly 3, 2008
Last NPPES UpdateJanuary 28, 20265 updates tracked since enumeration
NPPES CertifiedJanuary 28, 2026
✔ NPI 1285897967 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPreventive Medicine · Undersea and Hyperbaric MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2083P0011X
Licenses✔ Licensed in IL · 036-127497✔ Licensed in WI · 101961
Definition
A specialist who treats decompression illness and diving accident cases and uses hyperbaric oxygen therapy to treat such conditions as carbon monoxide poisoning, gas gangrene, non-healing wounds, tissue damage from radiation and burns and bone infections. This specialist also serves as consultant to other physicians in all aspects of hyperbaric chamber operations and assesses risks and applies appropriate standards to prevent disease and disability in divers and other persons working in altered atmospheric conditions.
Also ListedFamily MedicineTaxonomy 207Q00000X · License 036-127497 (IL), 101961 (WI)
130 KYSOR DR, Byron, IL 61010
Open in Google Maps ↗

Secondary Practice Locations 2

Location 12900 W Oklahoma AveMilwaukee, WI 53215-4330 · Phone (414) 649-6000
Location 21425 N Randall RdElgin, IL 60123-2300 · Phone (224) 783-3450

Other Identifiers 1

Medicaid100096326WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource (Common Ground Healthcare).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

Karen Imma C Gellada 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 ID5193995256
PECOS Enrollment IDI20110826000659
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

4

Medicare enrollment records show Karen Imma Gellada reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Rockford Health Physicians
14 mi
Anesthesiology
2400 N ROCKTON AVE
Rockford, IL 61103
  • Reassigned Medicare billing, Illinois enrollment
  • 1,375 clinicians in this Medicare group
NPI 1023275278 (815) 971-5000
Integra Medical Doctors Inc
54 mi
Specialist
2815 FORBS AVE, SUITE 126
Hoffman Estates, IL 60192
  • Reassigned Medicare billing, Illinois enrollment
  • 17 clinicians in this Medicare group
NPI 1700189677 (708) 529-7359
Advocate Health And Hospitals Corporation
67 mi
Cardiovascular Disease
3825 HIGHLAND AVE, TOWER 2 SUITE 400
Downers Grove, IL 60515
  • Reassigned Medicare billing, Illinois enrollment
  • 4,870 clinicians in this Medicare group
NPI 1285903849 (630) 719-4799
Aurora Medical Group, Inc.
87 mi
Obstetrics & Gynecology
8905 W LINCOLN AVE, SUITE 515
West Allis, WI 53227
  • Reassigned Medicare billing, Wisconsin enrollment
  • 4,609 clinicians in this Medicare group
NPI 1457592735 (414) 328-8650

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 8

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 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.
109 services77 patients
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.
97 services41 patients
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.
70 services49 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
56 services56 patients
Removal of tissue from wound, 20.0 sq cm or less 97597
This procedure involves the careful removal of damaged or infected tissue from a wound that's 20.0 square cm or less. It's done to promote healing and prevent further infection. The process is carried out under local anesthesia, ensuring minimal discomfort.
30 services16 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.
16 services13 patients

Hospital Affiliations CMS Care Compare 5

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

Advocate Sherman Hospital

Acute Care Hospitals · Elgin, IL
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140030
Location1425 North Randall RoadElgin, IL 60123 · Kane County
Emergency services Birthing friendly

Advocate Illinois Masonic Medical Center

Acute Care Hospitals · Chicago, IL
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140182
Location836 West Wellington AvenueChicago, IL 60657 · Cook County
Emergency services Birthing friendly

Advocate Condell Medical Center

Acute Care Hospitals · Libertyville, IL
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140202
Location801 S Milwaukee AveLibertyville, IL 60048 · Lake County
Emergency services Birthing friendly

Advocate Lutheran General Hospital

Acute Care Hospitals · Park Ridge, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number140223
Location1775 Dempster StPark Ridge, IL 60068 · Cook County
Emergency services Birthing friendly

Advocate Good Shepherd Hospital

Acute Care Hospitals · Barrington, IL
4/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number140291
Location450 West Highway 22Barrington, IL 60010 · Lake County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 61010 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
$127.46 typical visit price
range $54.80 – $168.44
Typical copayment $31.86 (range $13.70 – $42.11)
Most-billed visit code 99204
Established Patient
$97.25 typical visit price
range $17.16 – $136.56
Typical copayment $24.31 (range $4.29 – $34.14)
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.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
5 suppliers24 claims52 services$5.70 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
4 suppliers15 claims19 services$0.98 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Karen Imma Gellada's NPI number?

The NPI number for Karen Imma Gellada is 1285897967. It was assigned to this individual provider in the NPPES registry on July 3, 2008.

Where is Karen Imma Gellada located?

Karen Imma Gellada practices at 130 Kysor Dr, Byron, IL 61010. The listed phone number is (309) 672-4977.

What is Karen Imma Gellada's specialty?

The primary specialty registered for this NPI is Preventive Medicine, specializing in Undersea and Hyperbaric Medicine, with taxonomy code 2083P0011X.

Is Karen Imma Gellada enrolled in Medicare?

Yes. Karen Imma Gellada 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 Karen Imma Gellada's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Karen Imma Gellada reassigns Medicare benefits to 4 organizations: Rockford Health Physicians (Rockford, IL), Integra Medical Doctors Inc (Hoffman Estates, IL), Advocate Health And Hospitals Corporation (Downers Grove, IL) and Aurora Medical Group, Inc. (West Allis, 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 Karen Imma Gellada's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Karen Imma Gellada accept?

Health plans from CareSource (Common Ground Healthcare) list Karen Imma Gellada 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 Karen Imma Gellada affiliated with any hospitals?

According to CMS data, Karen Imma Gellada is affiliated with Advocate Sherman Hospital, Advocate Illinois Masonic Medical Center, Advocate Condell Medical Center, Advocate Lutheran General Hospital and Advocate Good Shepherd Hospital.

When was this NPI record last updated?

The NPPES record for Karen Imma Gellada was last updated on January 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.