Zachary Book, MD
NPI 1972739431 · Emergency Medicine Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Zachary Book, MD is a Emergency Medicine Physician provider in Chicago, IL (NPI 1972739431).
Provider details
- NPI number
- 1972739431
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 60289 (KY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 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 · 1 distinct drug on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 13 | 13 |
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 (2)
- 440 Hopkinsville StGreenville, KY 42345-1124Phone: (270) 338-8000Fax: (270) 338-8333
- 1201 Pleasant Valley RdOwensboro, KY 42303-9811Phone: (270) 417-5911Fax: (270) 417-6497
Registry dates
- Enumerated
- 2009-06-10
- Last updated
- 2025-03-12
- Certified
- 2025-03-12
Frequently asked questions
- What is Zachary Book's NPI number?
- Zachary Book's National Provider Identifier (NPI) is 1972739431, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zachary Book's specialty?
- Zachary Book is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Zachary Book located?
- Zachary Book's practice location on file with NPPES is 7435 W Talcott Ave, Chicago, IL 60631-3707.
- What is Zachary Book's phone number?
- The practice phone number listed in the NPPES registry for Zachary Book is (773) 792-7921.
- Does Zachary Book accept Medicare?
- Zachary Book is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Zachary Book's NPI active?
- Yes — Zachary Book's NPI (1972739431) is active in the NPPES registry as of the last update on 2025-03-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.