Katherine S. Inoyama, MD
Neurology Physician · Ridgewood, NJ
Katherine S. Inoyama, MD is a neurology physician with a practice address in Ridgewood, New Jersey, and NPI 1902032188, issued on Jun 2, 2009. Check the license (New Jersey 25MA09682200, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Katherine S. Inoyama
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License numbers
- 25MA09682200 NJ
A125037 CA
MT195953 PA
Self-reported in NPPES; status is on the state search - Practice location
- 1200 E Ridgewood Ave Ste 208, Ridgewood, NJ 07450
- Phone
- (201) 444-0868
- Enumerated
- Jun 2, 2009
- Record last updated
- Jul 18, 2022
- Fax
- (201) 447-0581
- Medicare enrollment
- Enrolled (PECOS I20150730010581); accepts Medicare assignment
- Medical or professional school
- Georgetown University School Of Medicine, 2009
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 1200 E Ridgewood Ave Ste 208
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Carly Fried, MSN, CPNP-ACPediatric Nurse Practitioner1093506313
- Jane Monteiro, NPAdult Health Nurse Practitioner1841170503
- Jina Park, M.D.Neurology Physician1487003505
- Sejal Patel, PA-CPhysician Assistant1992684443
- Ajay Rajshekar, DONeurology Physician1316509342
- Max Sherman, PA-CPhysician Assistant1043058522
Verify Katherine S. Inoyama in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license 25MA09682200Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
48% fewer Medicare Part D claims than the average neurology physician in 2024
710 Medicare Part D claims for 159 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Donepezil Hcl94 claims
- Memantine Hcl70 claims
- Gabapentin69 claims
- Levetiracetam52 claims
- Quetiapine Fumarate30 claims
- Escitalopram Oxalate27 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 84 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $232.35
2 payments; by number, the most common kind was food and beverage; the largest payer was Eisai Inc. The 10,858 providers of this specialty with any payment received $8,318.07 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
- Neurology Group OF Bergen County PARidgewood, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
19 neurology physician records list a practice address in Ridgewood
They are 19 of the 1,059 NPPES records with a practice address in Ridgewood, and 577 neurology physician records in New Jersey.
All 19 in Ridgewood → All 577 in New Jersey → Every provider in Ridgewood →
Other neurology physician records in New Jersey
- S Abidi, MDMaple Shade, NJ1508816729
- Russell Abrams, M.D.Cherry Hill, NJ1114956505
- Osama Abu-Hadid, M.D.Paramus, NJ1760916753
- Shashank Agarwal, M.DLivingston, NJ1255885554
- Antwan Ahad, MDSecaucus, NJ1083729917
- Jaffer AhmedSomerset, NJ1942741384
- Robert Aiken, M.D.Summit, NJ1851372981
- Umer Akbar, MDParamus, NJ1477798106
- Maria Alexianu, M.D.Hackensack, NJ1235109059
- Mohsin Ali, M.D.Plainfield, NJ1871561506
Common questions
What is Katherine S. Inoyama, MD's NPI number?
Katherine S. Inoyama, MD's National Provider Identifier (NPI) is 1902032188, issued on Jun 2, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Katherine S. Inoyama, MD located?
The NPPES record lists a practice address at 1200 E Ridgewood Ave Ste 208, Ridgewood, NJ, 07450. Phone: (201) 444-0868. Providers update this record themselves, so call before visiting.
How can I verify Katherine S. Inoyama, MD's license?
NPPES lists New Jersey license number 25MA09682200, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Katherine S. Inoyama, MD prescribe under Medicare Part D?
In 2024, Katherine S. Inoyama, MD had 710 Medicare Part D claims for 159 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.
What is Katherine S. Inoyama, MD's MIPS final score?
The 2023 MIPS final score is 84 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.