Ayaka Iwata, MD
Otolaryngology Physician · Boston, MA
Ayaka Iwata, MD is an otolaryngology physician with a practice address in Boston, Massachusetts, and NPI 1194143677, issued on Apr 2, 2014. Check the license (Massachusetts 279328, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Ayaka Iwata
- Credential
- MD
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License number
- 279328 MA
Self-reported in NPPES; status is on the state search - Practice location
- 243 Charles St, Boston, MA 02114
- Phone
- (617) 573-3653
- Enumerated
- Apr 2, 2014
- Record last updated
- Dec 17, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 364 in Massachusetts → Look up another NPI →
Also registered at 243 Charles St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Inas Aboobakar, M.D.Ophthalmology Physician1760846265
- Jihad Achkar, M.D.Otolaryngology Physician1811203763
- Alessandro Adad Jammal, MD, PHDOphthalmology Physician1518725480
Verify Ayaka Iwata in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 279328Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average otolaryngology physician in 2024
131 Medicare Part D claims for 51 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D.
Most prescribed
- Fluticasone Propionate43 claims
- Ipratropium Bromide13 claims
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.
Ayaka Iwata among 364 otolaryngology physician records in Massachusetts
Ayaka Iwata, MD is one of 364 otolaryngology physician records with a practice address in Massachusetts. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 73% of them.
- NPI issued2014 · 73% of these records are older, 24% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2021 · 64% 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 Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Otolaryngology Physician providers in Massachusetts
There are 364 otolaryngology physician records in Massachusetts.
All 364 in Massachusetts → Every provider in Boston → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- Jean Bruch, M.D., D.M.D.Boston, MA 021141699766790
- Nicolas Bu-Saba, MDBoston, MA 021141306837406
- Daniel Deschler, M.D.Boston, MA 021141952391351
- John Dobrowski, M.D.Boston, MA 021141538160452
- Ramon Franco, M.D.Boston, MA 021141104817204
- Stacey Gray, M.D.Boston, MA 021141407835929
- Eric Holbrook, M.D.Boston, MA 021141740271840
- Robert Kiskaddon, MDBoston, MA 021141548249014
Common questions
What is Ayaka Iwata, MD's NPI number?
Ayaka Iwata, MD's National Provider Identifier (NPI) is 1194143677, issued on Apr 2, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Ayaka Iwata, MD located?
The NPPES record lists a practice address at 243 Charles St, Boston, MA, 02114. Phone: (617) 573-3653. Providers update this record themselves, so call before visiting.
How can I verify Ayaka Iwata, MD's license?
NPPES lists Massachusetts license number 279328, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ayaka Iwata, MD prescribe under Medicare Part D?
In 2024, Ayaka Iwata, MD had 131 Medicare Part D claims for 51 beneficiaries; 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.