Gregory Clark, CRNA
NPI 1528627833 · Certified Registered Nurse Anesthetist · Marion, IL
Enrolled with Medicare as Practitioner - Certified Registered Nurse Anesthetist (crna) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Clark, CRNA is a Certified Registered Nurse Anesthetist provider in Marion, IL (NPI 1528627833).
Provider details
- NPI number
- 1528627833
- Entity type
- Individual
- Primary specialty
- Certified Registered Nurse AnesthetistPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CRNA
- Sex
- Male
- Sole proprietor
- No
- License
- 123868 (MO)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
7 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
347 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 131 | $61 |
| Injection of Substance Into Lower Spine Canal Using Imaging Guidance62323 | 81 | $91 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 79 | $125 |
| Aspiration And/Or Injection of Fluid Large Joint Using Ultrasound Guidance20611 | 23 | $58 |
| Injection of Substance Into Middle Or Upper Spine Canal Using Imaging Guidance62321 | 17 | $100 |
| Aspiration And/Or Injection of Fluid From Large Joint |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$188 across 5 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 (3)
- 405 W Jackson StCarbondale, IL 62901-1462Phone: (618) 549-0721Fax: (618) 529-0449
- 201 S 14th StHerrin, IL 62948-3631Phone: (618) 942-2171Fax: (618) 351-4919
- 2 S Hospital DrMurphysboro, IL 62966-3333Phone: (618) 684-3156Fax: (618) 529-0529
Registry dates
- Enumerated
- 2019-06-10
- Last updated
- 2021-06-01
- Certified
- 2021-06-01
Frequently asked questions
- What is Gregory Clark's NPI number?
- Gregory Clark's National Provider Identifier (NPI) is 1528627833, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Clark's specialty?
- Gregory Clark is listed in the NPPES registry with a primary specialty of Certified Registered Nurse Anesthetist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Gregory Clark located?
- Gregory Clark's practice location on file with NPPES is 3333 W Deyoung St, Marion, IL 62959-5884.
- What is Gregory Clark's phone number?
- The practice phone number listed in the NPPES registry for Gregory Clark is (618) 998-7000.
- Does Gregory Clark accept Medicare?
- Gregory Clark is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Clark's NPI active?
- Yes — Gregory Clark's NPI (1528627833) is active in the NPPES registry as of the last update on 2021-06-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.