Katherine Inoyama, MD
NPI 1902032188 · Neurology Physician · Ridgewood, NJ
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Inoyama, MD is a Neurology Physician provider in Ridgewood, NJ (NPI 1902032188).
Provider details
- NPI number
- 1902032188
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- MT195953 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,822 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 263 | $139 |
| Assessment of Emotional Or Behavioral Problems96127 | 218 | $5 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 183 | $125 |
| Measurement of Brain Wave Activity (eeg), Awake and Asleep95819 | 172 | $60 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 168 | $182 |
| Measurement of Brain Wave Activity With Video (veeg), 12-26 Hours With Review and Report By Health Care Professional95720 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Donepezil Hcl | 94 | 29 |
| Memantine Hcl | 70 | 19 |
| Gabapentin | 69 | 27 |
| Levetiracetam | 52 | 14 |
| Quetiapine Fumarate | 30 | — |
| Escitalopram Oxalate | 27 | — |
| Carbidopa/Levodopabrand: Carbidopa-Levodopa | 21 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$232 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-06-02
- Last updated
- 2022-07-18
- Certified
- 2022-07-18
Frequently asked questions
- What is Katherine Inoyama's NPI number?
- Katherine Inoyama's National Provider Identifier (NPI) is 1902032188, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Inoyama's specialty?
- Katherine Inoyama is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Katherine Inoyama located?
- Katherine Inoyama's practice location on file with NPPES is 1200 E Ridgewood Ave Ste 208, Ridgewood, NJ 07450-3937.
- What is Katherine Inoyama's phone number?
- The practice phone number listed in the NPPES registry for Katherine Inoyama is (201) 444-0868.
- Does Katherine Inoyama accept Medicare?
- Katherine Inoyama is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Inoyama's NPI active?
- Yes — Katherine Inoyama's NPI (1902032188) is active in the NPPES registry as of the last update on 2022-07-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.