Mallory Kosow
NPI 1548930431 · Physician Assistant · Oak Lawn, IL
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mallory Kosow is a Physician Assistant provider in Oak Lawn, IL (NPI 1548930431).
Provider details
- NPI number
- 1548930431
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 085.008163 (IL)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 57 | 57 |
| Tramadol Hcl | 16 | 16 |
| Levothyroxine Sodium | 12 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 4440 W 95th StOak Lawn, IL 60453-2600Phone: (708) 684-8000
Registry dates
- Enumerated
- 2021-09-14
- Last updated
- 2025-12-16
- Certified
- 2025-12-16
Frequently asked questions
- What is Mallory Kosow's NPI number?
- Mallory Kosow's National Provider Identifier (NPI) is 1548930431, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mallory Kosow's specialty?
- Mallory Kosow is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mallory Kosow located?
- Mallory Kosow's practice location on file with NPPES is 4400 W 95th St Ste 413, Oak Lawn, IL 60453-2662.
- What is Mallory Kosow's phone number?
- The practice phone number listed in the NPPES registry for Mallory Kosow is (708) 346-4055.
- Does Mallory Kosow accept Medicare?
- Mallory Kosow is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mallory Kosow's NPI active?
- Yes — Mallory Kosow's NPI (1548930431) is active in the NPPES registry as of the last update on 2025-12-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.