Grant Berquist
NPI 1083311393 · Acute Care Nurse Practitioner · Oak Lawn, IL
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grant Berquist is a Acute Care Nurse Practitioner provider in Oak Lawn, IL (NPI 1083311393).
Provider details
- NPI number
- 1083311393
- Entity type
- Individual
- Primary specialty
- Acute Care Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 209.026753 (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 tenure28% of score
3 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
114 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) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 114 | $189 |
Typical Medicare-allowed amounts for these services range $189–$189 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2023-02-08
- Last updated
- 2024-11-12
- Certified
- 2024-11-12
Frequently asked questions
- What is Grant Berquist's NPI number?
- Grant Berquist's National Provider Identifier (NPI) is 1083311393, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grant Berquist's specialty?
- Grant Berquist is listed in the NPPES registry with a primary specialty of Acute Care Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Grant Berquist located?
- Grant Berquist's practice location on file with NPPES is 4440 W 95th St, Oak Lawn, IL 60453-2600.
- What is Grant Berquist's phone number?
- The practice phone number listed in the NPPES registry for Grant Berquist is (708) 684-8000.
- Does Grant Berquist accept Medicare?
- Grant Berquist is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Grant Berquist's NPI active?
- Yes — Grant Berquist's NPI (1083311393) is active in the NPPES registry as of the last update on 2024-11-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.