Isabel Feinstein, MD
Otolaryngology Physician · Sun City, AZ
Isabel Feinstein, MD is an otolaryngology physician with a practice address in Sun City, Arizona, and NPI 1073506077, issued on Aug 24, 2005. Check the license (Arizona 21256, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Isabel Feinstein
- Credential
- MD
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License number
- 21256 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 10503 West Thunderbird Blvd, Sun City, AZ 85351
- Phone
- (623) 975-1660
- Enumerated
- Aug 24, 2005
- Record last updated
- Jan 23, 2023
- Fax
- (623) 584-4282
- Medicaid ID
- 881434 AZ
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 178 in Arizona → Look up another NPI →
Verify Isabel Feinstein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 21256Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average otolaryngology physician in 2024
12 Medicare Part D claims, against an average of 541 among the 8,339 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.
Isabel Feinstein among 178 otolaryngology physician records in Arizona
Isabel Feinstein, MD is one of 178 otolaryngology physician records with a practice address in Arizona. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 85% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2023 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Otolaryngology Physician providers in Arizona
There are 178 otolaryngology physician records in Arizona.
All 178 in Arizona → Every provider in Sun City → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- Matthew Jepsen, M.D.Sun City, AZ 853511962486027
- W.graham Driscoll, MDYuma, AZ 853641932188265
- Matthew Groysman, MDYuma, AZ 853641659953065
- Deven Gujrathi, MDYuma, AZ 853641154325876
- David Kaba, M.D.Yuma, AZ 853641568456515
- Ralph Bassett, M.D.Sun City West, AZ 853751841293677
- Jerald Altman, MDGlendale, AZ 853081972531358
- Brandon FornwaltGlendale, AZ 853081912407172
Common questions
What is Isabel Feinstein, MD's NPI number?
Isabel Feinstein, MD's National Provider Identifier (NPI) is 1073506077, issued on Aug 24, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Isabel Feinstein, MD located?
The NPPES record lists a practice address at 10503 West Thunderbird Blvd, Sun City, AZ, 85351. Phone: (623) 975-1660. Providers update this record themselves, so call before visiting.
How can I verify Isabel Feinstein, MD's license?
NPPES lists Arizona license number 21256, 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 Isabel Feinstein, MD prescribe under Medicare Part D?
In 2024, Isabel Feinstein, MD had 12 Medicare Part D claims; the average among otolaryngology physician prescribers was 541. 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.