Ryan W. Grieger, MD
Anesthesiology Physician · Phoenix, AZ
Ryan W. Grieger, MD is an anesthesiology physician with a practice address in Phoenix, Arizona, and NPI 1942760251, issued on Mar 22, 2019. Check the license (Arizona 68374, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Ryan W. Grieger
- Credential
- MD
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- 68374 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 4605 E Elwood St Ste 500, Phoenix, AZ 85040
- Phone
- (602) 200-9021
- Enumerated
- Mar 22, 2019
- Record last updated
- Jun 2, 2023
- Medicare enrollment
- Enrolled (PECOS I20230612001569); accepts Medicare assignment
- Medical or professional school
- University Of Arizona College Of Medicine, 2019
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 1,473 in Arizona → Look up another NPI →
Also registered at 4605 E Elwood St Ste 500
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John Allen, CRNACertified Registered Nurse Anesthetist1376788042
- Justin Beitel, M.D.Anesthesiology Physician1154874212
- Matthew Beltran, CRNACertified Registered Nurse Anesthetist1518695345
- Marshall Bergen, CRNACertified Registered Nurse Anesthetist1003578568
- Douglas Bufkin, CRNACertified Registered Nurse Anesthetist1104132356
- Blake Burk, CRNACertified Registered Nurse Anesthetist1811676489
Verify Ryan W. Grieger in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 68374Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through 2 group practices
- Anesthesia Partners OF Arizona LLCPhoenix, AZ
- Banner Hospital Based Physicians Arizona LLCMesa, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ryan W. Grieger among 1,473 anesthesiology physician records in Arizona
Ryan W. Grieger, MD is one of 1,473 anesthesiology physician records with a practice address in Arizona. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 90% of them.
- NPI issued2019 · 90% of these records are older, 8% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2019 · median 2003 among the 984 with a school on file
- Record last updated2023 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
602 anesthesiology physician records list a practice address in Phoenix
They are 602 of the 31,399 NPPES records with a practice address in Phoenix, and 1,473 anesthesiology physician records in Arizona.
All 1,473 in Arizona → Every provider in Phoenix → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Justin Beitel, M.D.Phoenix, AZ 850401154874212
- Nupur Dua, MD, MBBSPhoenix, AZ 850401134627771
- Shane Durkin, MDPhoenix, AZ 850401912361395
- Saman Farnoush, MDPhoenix, AZ 850401396795233
- Jesse Lopez, MDPhoenix, AZ 850401194714196
- Nandhini Marupudi, MDPhoenix, AZ 850401538555495
- Brandon Minzer, MDPhoenix, AZ 850401053724104
- Subin Sharma, M DPhoenix, AZ 850401588008080
Common questions
What is Ryan W. Grieger, MD's NPI number?
Ryan W. Grieger, MD's National Provider Identifier (NPI) is 1942760251, issued on Mar 22, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Ryan W. Grieger, MD located?
The NPPES record lists a practice address at 4605 E Elwood St Ste 500, Phoenix, AZ, 85040. Phone: (602) 200-9021. Providers update this record themselves, so call before visiting.
How can I verify Ryan W. Grieger, MD's license?
NPPES lists Arizona license number 68374, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
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.