Carri Ann Grennan, CRNA
Certified Registered Nurse Anesthetist · Chicago, IL
Carri Ann Grennan, CRNA is a certified registered nurse anesthetist with a practice address in Chicago, Illinois, and NPI 1396024931, issued on Aug 14, 2011. Check the license (Illinois 209.008958, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Carri Ann Grennan
- Credential
- CRNA
- Primary taxonomy
- Certified Registered Nurse Anesthetist 367500000X
- License number
- 209.008958 IL
Self-reported in NPPES; status is on the state search - Practice location
- 5145 N California Ave, Chicago, IL 60625
- Phone
- (773) 878-8200
- Enumerated
- Aug 14, 2011
- Record last updated
- Jul 15, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (773) 293-8804
- Medicare enrollment
- Enrolled (PECOS I20220406002575); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest certified registered nurse anesthetist records → All 2,444 in Illinois → Look up another NPI →
Also registered at 5145 N California Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Linh Agtuca, DOFamily Medicine Physician1992169783
- Tanja Alavanja, PHARMDPharmacist1336668417
- Matthew Alfarano, MDEmergency Medicine Physician1538621487
- Sawsan Alzukaimi, MDSurgery Physician1184147688
- Basava Ancha, MDInternal Medicine Physician1265488647
- Abigail Anderson, DOInternal Medicine Physician1154263168
Verify Carri Ann Grennan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209.008958Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $57.75
2 payments; by number, the most common kind was food and beverage; the largest payer was Ardelyx, Inc. The 24,076 providers of this specialty with any payment received $135.08 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Pacific Valley Medical GroupPasadena, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Carri Ann Grennan among 2,444 certified registered nurse anesthetist records in Illinois
Carri Ann Grennan, CRNA is one of 2,444 certified registered nurse anesthetist records with a practice address in Illinois. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 43% of them.
- NPI issued2011 · 43% of these records are older, 54% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 79% of these records are
- Graduated2005 · median 2015 among the 1,926 with a school on file
- Record last updated2016 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 367500000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Certified Registered Nurse Anesthetist providers in Illinois
There are 2,444 certified registered nurse anesthetist records in Illinois.
All 2,444 in Illinois → Every provider in Chicago → Certified Registered Nurse Anesthetist nationwide →
The 8 certified registered nurse anesthetist records with the nearest ZIP codes
- Mishawna BohnerChicago, IL 606251285189274
- Sara Byerly, CRNAChicago, IL 606251710195813
- Brianna Campos, APN-CRNAChicago, IL 606251528613841
- Mark Cappello, CRNAChicago, IL 606251346370467
- Emily Cayer, CRNAChicago, IL 606251184966236
- Christopher Farnan, CRNAChicago, IL 606251750753844
- Andrew Freeman, CRNAChicago, IL 606251972835494
- Rachel Heise, CRNAChicago, IL 606251417578980
Common questions
What is Carri Ann Grennan, CRNA's NPI number?
Carri Ann Grennan, CRNA's National Provider Identifier (NPI) is 1396024931, issued on Aug 14, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Carri Ann Grennan, CRNA located?
The NPPES record lists a practice address at 5145 N California Ave, Chicago, IL, 60625. Phone: (773) 878-8200. Providers update this record themselves, so call before visiting.
How can I verify Carri Ann Grennan, CRNA's license?
NPPES lists Illinois license number 209.008958, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.