Marisha Cook, M. D
NPI 1356487904 · Allergy Physician · Rockford, IL
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marisha Cook, M. D is a Allergy Physician provider in Rockford, IL (NPI 1356487904).
Provider details
- NPI number
- 1356487904
- Entity type
- Individual
- Primary specialty
- Allergy PhysicianAllopathic & Osteopathic Physicians
- Credential
- M. D
- Sex
- Female
- Sole proprietor
- No
- License
- 036128205 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
767 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Test for Allergy Using Allergenic Extract95004 | 274 | $3 |
| Professional Service for Preparation and Provision of 1 Or More Antigens95165 | 205 | $3 |
| Test for Allergy Using Allergenic Extract Injected Into Skin95024 | 106 | $1 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 95 | $96 |
| Test for Allergy Using Combination of Methods With Drug Or Biological95018 | 30 | $7 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 30 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone Propionate | 116 | 42 |
| Montelukast Sodium | 106 | 30 |
| Azelastine Hcl | 89 | 35 |
| Ipratropium Bromide | 68 | 20 |
| Levocetirizine Dihydrochloride | 54 | 13 |
| Mometasone Furoate | 47 | 16 |
| Fluticasone Furoatebrand: Arnuity Ellipta | 41 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-30
- Last updated
- 2026-02-23
- Certified
- 2026-02-23
Frequently asked questions
- What is Marisha Cook's NPI number?
- Marisha Cook's National Provider Identifier (NPI) is 1356487904, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marisha Cook's specialty?
- Marisha Cook is listed in the NPPES registry with a primary specialty of Allergy Physician (Allopathic & Osteopathic Physicians).
- Where is Marisha Cook located?
- Marisha Cook's practice location on file with NPPES is 2350 N Rockton Ave, Rockford, IL 61103-3600.
- What is Marisha Cook's phone number?
- The practice phone number listed in the NPPES registry for Marisha Cook is (815) 971-2000.
- Does Marisha Cook accept Medicare?
- Marisha Cook is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marisha Cook's NPI active?
- Yes — Marisha Cook's NPI (1356487904) is active in the NPPES registry as of the last update on 2026-02-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.