Zachary Grunig, PA-C
NPI 1649625963 · Physician Assistant · Boise, ID
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Zachary Grunig, PA-C is a Physician Assistant provider in Boise, ID (NPI 1649625963).
Provider details
- NPI number
- 1649625963
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
- License
- PA-2164 (ID)
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 tenure33% of score
10 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
3 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 46 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 643 | 165 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 312 | 85 |
| Oxycodone Hcl | 191 | 50 |
| Tramadol Hcl | 166 | 46 |
| Gabapentin | 163 | 45 |
| Cyclobenzaprine Hcl | 150 | 41 |
| Pregabalin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$494 across 27 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 633 N 4th StBoise, ID 83702-4510Phone: (208) 342-9800Fax: (208) 342-4223
- 1825 S Kimball AveCaldwell, ID 83605-4828Phone: (208) 455-3535Fax: (208) 455-5190
Registry dates
- Enumerated
- 2016-04-25
- Last updated
- 2025-11-11
- Certified
- 2025-11-11
Frequently asked questions
- What is Zachary Grunig's NPI number?
- Zachary Grunig's National Provider Identifier (NPI) is 1649625963, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zachary Grunig's specialty?
- Zachary Grunig is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Zachary Grunig located?
- Zachary Grunig's practice location on file with NPPES is 287 W Jefferson St, Boise, ID 83702-6045.
- What is Zachary Grunig's phone number?
- The practice phone number listed in the NPPES registry for Zachary Grunig is (208) 322-1680.
- Does Zachary Grunig accept Medicare?
- Zachary Grunig is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Zachary Grunig's NPI active?
- Yes — Zachary Grunig's NPI (1649625963) is active in the NPPES registry as of the last update on 2025-11-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.