Kathleen Maria Guarnieri, MD
Anesthesiology Physician · Phoenix, AZ
Kathleen Maria Guarnieri, MD is an anesthesiology physician with a practice address in Phoenix, Arizona, and NPI 1942270756, issued on Jan 24, 2006. Check the license (Arizona 22646, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Kathleen Maria Guarnieri
- Credential
- MD
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- 22646 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 1919 E Thomas RD, Phoenix, AZ 85016
- Phone
- (602) 933-4660
- Enumerated
- Jan 24, 2006
- Record last updated
- Jan 17, 2023
- Medicaid ID
- 175142 AZ
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 1,473 in Arizona → Look up another NPI →
Also registered at 1919 E Thomas RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Kathleen Maria Guarnieri in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 22646Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average anesthesiology physician in 2024
18 Medicare Part D claims, against an average of 402 among the 4,319 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Kathleen Maria Guarnieri among 1,473 anesthesiology physician records in Arizona
Kathleen Maria Guarnieri, 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 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 44% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 67% of these records are
- 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
- Robert Branche, MD.Phoenix, AZ 850161184712192
- Susan Braun, MDPhoenix, AZ 850161023261799
- David Eicher, MDPhoenix, AZ 850161558453043
- Elisabeth Graf-Shafa, M.D.Phoenix, AZ 850161831207828
- Robert Greenberger, MDPhoenix, AZ 850161780623363
- Narasimhan JagannathanPhoenix, AZ 850161285729988
- Anthony Koo, MDPhoenix, AZ 850161982897146
- Phillip Moss, MDPhoenix, AZ 850161801863345
Common questions
What is Kathleen Maria Guarnieri, MD's NPI number?
Kathleen Maria Guarnieri, MD's National Provider Identifier (NPI) is 1942270756, issued on Jan 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Kathleen Maria Guarnieri, MD located?
The NPPES record lists a practice address at 1919 E Thomas RD, Phoenix, AZ, 85016. Phone: (602) 933-4660. Providers update this record themselves, so call before visiting.
How can I verify Kathleen Maria Guarnieri, MD's license?
NPPES lists Arizona license number 22646, 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.
How much does Kathleen Maria Guarnieri, MD prescribe under Medicare Part D?
In 2024, Kathleen Maria Guarnieri, MD had 18 Medicare Part D claims; the average among anesthesiology physician prescribers was 402. Part D covers Medicare prescriptions 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.