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MARISHA L. COOK M. D
NPI 1356487904
Allergy & Immunology - Allergy in Rockford, IL

Active since January 30, 2007PECOS EnrolledAccepts Medicare Assignment
2350 N ROCKTON AVE, ROCKFORD, IL 61103(815) 971-2000(815) 971-2585 Get Directions Write a Review

NPPES record last updated: February 23, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Marisha L. Cook M. D NPPES

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

MARISHA L. COOK M. D (NPI 1356487904) is an individual allergy provider in Rockford, Illinois, licensed in Illinois (036128205) and active in the NPI registry since January 2007. She is enrolled in Medicare PECOS, is affiliated with Saint Anthony Medical Center, and is a graduate of Other (2006).

NPPES Registry Identity

NPI1356487904
Entity TypeIndividualFemale
Primary Taxonomy207KA0200X
Provider Legal NameMARISHA L. COOKCredential: M. D
Location Address2350 N ROCKTON AVERockford, IL 61103-3600
Mailing Address2350 N Rockton AveRockford, IL 61103-3600 · (815) 971-2000 · Fax (815) 971-2585
Phone(815) 971-2000
Fax(815) 971-2585
Sole ProprietorNo
Medical School CMSOtherGraduated 2006
Enumeration DateJanuary 30, 2007
Last NPPES UpdateFebruary 23, 2026
NPPES CertifiedFebruary 23, 2026
✔ NPI 1356487904 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAllergy & Immunology · AllergyAllopathic & Osteopathic Physicians
Taxonomy Code207KA0200X
License✔ Licensed in IL · 036128205
Definition
A physician who specializes in the diagnosis, treatment, and management of allergies. Source: National Uniform Claim Committee
2350 N ROCKTON AVE, Rockford, IL 61103
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include MercyCare Health Plans.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

Marisha L. Cook M. 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 ID4284774142
PECOS Enrollment IDI20110829000088
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 7

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.

Test for allergy using allergenic extract 95004
An allergy test with allergenic extract is a diagnostic method to identify substances causing allergic reactions. Small amounts of common allergens are introduced to your body, usually through skin pricks or blood tests. Your body's response helps determine your allergies.
274 services17 patients
Professional service for preparation and provision of 1 or more antigens 95165
This service involves the creation and supply of antigens, substances that stimulate your immune system to fight diseases. These antigens can be used in vaccines or allergy tests to help your body build defenses against specific health threats.
205 services11 patients
Test for allergy using allergenic extract injected into skin 95024
An allergy skin test involves injecting a small amount of allergenic extract into your skin. This test helps determine if you're allergic to specific substances. If allergic, a small red bump appears at the test site. It's safe and quick.
106 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.
95 services79 patients
Test for allergy using combination of methods with drug or biological 95018
An allergy test with a drug or biological involves multiple methods. Skin tests may be performed where small amounts of allergens are introduced to the skin. Blood tests measure your immune system's response to specific allergens. These tests help identify what substances you're allergic to.
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.
30 services26 patients

Hospital Affiliations CMS Care Compare 2

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

Saint Anthony Medical Center

Acute Care Hospitals · Rockford, IL
2/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number140233
Location5666 East State StreetRockford, IL 61108 · Winnebago County
Emergency services Birthing friendly

Javon Bea Hospital

Acute Care Hospitals · Rockford, IL
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140239
Location8201 E Riverside BlvdRockford, IL 61114 · Winnebago County
Emergency services Birthing friendly

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.

PRASAD K. KILARU MD
Internal Medicine (Cardiovascular Disease)
2350 N ROCKTON AVE
ROCKFORD, IL 61103
Winnebago County (815) 971-2000
JOHN T. DORSEY MD
Internal Medicine
2350 N ROCKTON AVE
ROCKFORD, IL 61103
Winnebago County (815) 971-7210
DR. MOHSIN KHAN MD
Psychiatry & Neurology (Neurology)
2350 N ROCKTON AVE, ROCKFORD HEALTH PHYSICIANS
ROCKFORD, IL 61103
Winnebago County (815) 971-7600
DR. DAVID M CHENG MD
Thoracic Surgery (Cardiothoracic Vascular Surgery)
2350 N ROCKTON AVE, RMB 1ST FLOOR
ROCKFORD, IL 61103
Winnebago County (815) 971-2485
SALLIE VAN DAELE NP
Nurse Practitioner (Adult Health)
2350 N ROCKTON AVE
ROCKFORD, IL 61103
Winnebago County (815) 971-2200
LEELA L NARRA MD
Internal Medicine (Cardiovascular Disease)
2350 N ROCKTON AVE
ROCKFORD, IL 61103
Winnebago County (815) 971-2000
MELISSA ALEXANDRA BACHMAN APRN
Nurse Practitioner (Gerontology)
2350 N ROCKTON AVE
ROCKFORD, IL 61103
Winnebago County (815) 971-3613
REBECCA ZIMMERMAN N.P.
Nurse Practitioner
2350 N ROCKTON AVE
ROCKFORD, IL 61103
Winnebago County (815) 971-2000

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 Marisha Cook's NPI number?

The NPI number for Marisha Cook is 1356487904. It was assigned to this individual provider in the NPPES registry on January 30, 2007.

Where is Marisha Cook located?

Marisha Cook practices at 2350 N Rockton Ave, Rockford, IL 61103. The listed phone number is (815) 971-2000.

What is Marisha Cook's specialty?

The primary specialty registered for this NPI is Allergy & Immunology, specializing in Allergy, with taxonomy code 207KA0200X.

Is Marisha Cook enrolled in Medicare?

Yes. Marisha Cook 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 Marisha Cook accept?

Health plans from MercyCare Health Plans list Marisha Cook 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 Marisha Cook affiliated with any hospitals?

According to CMS data, Marisha Cook is affiliated with Saint Anthony Medical Center and Javon Bea Hospital.

When was this NPI record last updated?

The NPPES record for Marisha Cook was last updated on February 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.