Attention Deficit Disorder with HyperactivityCentral Nervous System StimulantsCognition Disorders
Dr. Katherine S. Inoyama, MD
NPI1902032188PAC ID0244544690
- Medicare services, 2024
- 1,822
- Medicare patients, 2024
- 802
- Part D claims, 2024
- 710
- Publications
- 5
- MIPS score, 2024
- 95
- Practice address
- 1200 Ridgewood E Ave, Ridgewood, NJ 07450
- Practice phone
- Call (201) 444-9002
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Ridgewood Ambulatory Surgery Center
Ridgewood, New Jersey
Find Dr. Inoyama's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Katherine S. Inoyama is a neurologist in Ridgewood, New Jersey
Dr. Inoyama practices at Ridgewood Ambulatory Surgery Center in Ridgewood, New Jersey.
Dr. Inoyama's NPI, 1902032188, was assigned on June 2, 2009. Dr. Inoyama graduated from Georgetown University School of Medicine in 2009. Dr. Inoyama holds New Jersey license 25MA09682200.
NPI and contact details
- NPI
- 1902032188NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0244544690
- NPI enumeration date
- June 2, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (201) 444-9002
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Katherine S. Inoyama practices at Ridgewood Ambulatory Surgery Center in Ridgewood, New Jersey
Dr. Inoyama's primary practice is Ridgewood Ambulatory Surgery Center, at 1200 Ridgewood E Ave, Ridgewood, NJ 07450 in Bergen County. The practice phone is (201) 444-9002.
- Ridgewood Ambulatory Surgery Center1200 Ridgewood E Ave, Ridgewood, NJ 07450 · Bergen CountyPhone(201) 444-9002
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Katherine S. Inoyama is affiliated with 7 sites of care and 1 medical group
Dr. Inoyama's primary practice is Ridgewood Ambulatory Surgery Center in Ridgewood, New Jersey. Dr. Inoyama is also affiliated with Hackensack University Medical Center. The medical group on file is Neurology Group of Bergen County. Dmand AI also links Dr. Inoyama to 4 more hospitals and 1 group practice or clinic, each named with a free account.
Ridgewood Ambulatory Surgery CenterPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Katherine S. Inoyama's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Inoyama practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ridgewood Ambulatory Surgery Center | Available with a free account |
| +6 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Katherine S. Inoyama is one of 607 neurologists in New Jersey
Neurology is Dr. Inoyama's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dmand AI has Dr. Inoyama's licenses on file in 3 states: New Jersey, California and Pennsylvania.
Specialties and state licenses
- Neurology, New JerseyPrimary
- California license
- Pennsylvania license
Neurologists near Dr. Inoyama
Counts of neurologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Katherine S. Inoyama billed Medicare for 1,822 services in 2024
CMS data shows 1,822 Medicare services from Dr. Inoyama across 18 procedure codes in 2024, for 802 Medicare patients. Medicare paid $242,123 for them.
Medicare services, 20241,822
Medicare patients802
Paid by Medicare$242,123
Procedure codes18
Dr. Inoyama's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 8762024: 8851%
- Tests and treatments
- 2023: 7162024: 7849%
- Other services
- 2023: 02024: 153
Where Dr. Inoyama's Medicare services took place, 2024
- In an office1,03957%
- In a facility78343%
Dr. Inoyama compared with the New Jersey median for neurologists, 2024
- Dr. Inoyama
- New Jersey median
- Medicare services
- 1,822vs 4484.1 times
- Medicare patients
- 802vs 2373.4 times
- Part D claims
- 530vs 47512% above
Medians across 595 neurologists in New Jersey with Dmand AI profiles that report each measure.
Dr. Inoyama's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Katherine S. Inoyama treated 802 Medicare patients in 2024, average age 78
CMS counts 802 Medicare patients who saw Dr. Inoyama in 2024. The largest group is 75 to 84, with 320 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 12% are also on Medicaid. Their average risk score is 1.75, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Inoyama's median patient age at 66, with 60% women.
Medicare patients, 2024802
Average age78
Average risk score1.75
Also on Medicaid12%
Dr. Inoyama's Medicare patients by age, 2024
Dr. Inoyama's Medicare patients by sex, 2024
- Women45657%
- Men34643%
Chronic conditions among Dr. Inoyama's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis61%
- Stroke or TIA51%
- Ischemic heart disease47%
- Mood disorders47%
- Anxiety42%
- Depression40%
Share of Medicare patients with each condition. A patient can have several.
Dr. Inoyama's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women60%
- Men36%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Katherine S. Inoyama wrote 710 Medicare Part D claims in 2024
In 2024, Dr. Inoyama wrote 710 Medicare Part D claims for 159 patients. 88% of them were for generic drugs. CMS names the drug for 530 of them, across 18 drugs with 11 or more claims each, at $44,240 in total drug cost. In 2023, CMS named 386 claims across 17 drugs.
Part D claims, 2024710
Drugs named by CMS18
Total drug cost$44,240
Part D patients159
Dr. Inoyama's Part D claims by kind of drug, 2024
- Generic628 claims88%
- Brand-name82 claims12%
Dr. Inoyama's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Inoyama's Part D claims, 2024
- Antipsychotics, patients 65 and over4%30 of 710 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3862024: 53037%
Drugs named by CMS: 18 in 2024, 17 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Katherine S. Inoyama scored 95 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 95 out of 100 for Dr. Inoyama for performance year 2024, reported through an alternative payment model (APM). Dr. Inoyama accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Inoyama as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Inoyama's MIPS scores, performance year 2024
- 95of 100Final score
- 85.7of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Katherine S. Inoyama has 5 publications on record
Dmand AI links 5 papers to Dr. Inoyama, published from 2015 to 2017. 2015 was the busiest year, with 2. The most frequent topics are Cognition Disorders and Epilepsy. Dr. Inoyama's most frequent co-authors are Kimford Jay Meador, MD, Orrin Devinsky, MD and Kai Joshua Miller, MD, PhD.
Papers5
Years published2015 to 2017
Dr. Inoyama's papers by year, 2015 to 2017
Topics Dr. Inoyama writes about most
- Cognition Disorders
- Epilepsy
Dr. Inoyama's most frequent co-authors
- Kimford Jay Meador, MD3 shared papers
- Orrin Devinsky, MD1 shared paper
- Kai Joshua Miller, MD, PhD1 shared paper
Recent publications by Dr. Inoyama
AnticonvulsantsCognitionCognition Disorders
EpilepsyGyrus CinguliSeizures
See who Dr. Inoyama researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Inoyama works with, so you can find a warm path to the right neurologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Katherine S. Inoyama received $776 in industry payments from 2016 to 2025
CMS Open Payments shows 15 general payments to Dr. Inoyama from 10 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Neuropace, Inc. paid the most, $129.
General payments to Dr. Inoyama by program year, 2016 to 2025
Companies that paid Dr. Inoyama the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Katherine S. Inoyama graduated from Georgetown University School of Medicine
Dr. Inoyama graduated from Georgetown University School of Medicine in 2009.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Katherine S. Inoyama's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Katherine S. Inoyama
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Katherine S. Inoyama's NPI number?
Dr. Katherine S. Inoyama's NPI number is 1902032188. It was assigned on June 2, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Katherine S. Inoyama?
Dr. Katherine S. Inoyama is a neurologist in Ridgewood, New Jersey. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).
Where does Dr. Katherine S. Inoyama practice?
Dr. Inoyama practices at 1200 Ridgewood E Ave, Ridgewood, NJ 07450. Dr. Inoyama's primary practice is Ridgewood Ambulatory Surgery Center in Ridgewood, New Jersey. Dmand AI also links Dr. Inoyama to 4 hospitals and 1 group practice or clinic.
What is Dr. Katherine S. Inoyama's office phone number?
The practice phone on file for Dr. Inoyama is (201) 444-9002.
What is Dr. Katherine S. Inoyama's medical license number?
Dr. Inoyama holds New Jersey license 25MA09682200, one of the licenses on file in 3 states.
Which states has Dr. Katherine S. Inoyama been licensed in?
Dmand AI has state licenses on file for Dr. Inoyama in New Jersey, California and Pennsylvania.
Which hospitals is Dr. Katherine S. Inoyama affiliated with?
Dr. Inoyama is affiliated with Hackensack University Medical Center. Dmand AI links Dr. Inoyama to 4 more hospitals.
What medical group is Dr. Katherine S. Inoyama part of?
Dr. Inoyama is linked to Neurology Group of Bergen County.
Does Dr. Katherine S. Inoyama accept Medicare?
Yes. CMS data shows Dr. Inoyama billed Medicare for 1,822 services in 2024, and Dr. Inoyama accepts Medicare assignment.
Does Dr. Katherine S. Inoyama offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Inoyama as offering telehealth services.
Show 9 more questionsShow fewer questions
What is Dr. Katherine S. Inoyama's MIPS score?
Dr. Inoyama's MIPS final score for performance year 2024 is 95 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. Katherine S. Inoyama see?
CMS counts 802 Medicare patients who saw Dr. Inoyama in 2024, with an average age of 78.
What services does Dr. Katherine S. Inoyama bill to Medicare?
In 2024, Dr. Inoyama's most billed Medicare services were nerve and brain test (95819), office visit, established patient (99214) and health assessment (96127).
Where did Dr. Katherine S. Inoyama go to medical school?
Dr. Inoyama graduated from Georgetown University School of Medicine in 2009.
What drugs does Dr. Katherine S. Inoyama prescribe most?
In 2024 Medicare Part D data, Dr. Inoyama's most prescribed drugs by claims were Donepezil HCl, Memantine HCl and Gabapentin.
Has Dr. Katherine S. Inoyama received payments from drug or device companies?
CMS Open Payments shows $776 in general payments to Dr. Inoyama from 10 companies from 2016 to 2025. The largest total came from Neuropace, Inc.
How long has Dr. Katherine S. Inoyama been practicing?
Dr. Inoyama graduated from medical school in 2009, 17 years ago.
Does Dr. Katherine S. Inoyama do research?
Dmand AI links 5 publications to Dr. Inoyama, published from 2015 to 2017.
Who does Dr. Katherine S. Inoyama publish with?
Dr. Inoyama's most frequent co-authors are Kimford Jay Meador, MD (3 shared papers), Orrin Devinsky, MD (1 shared paper) and Kai Joshua Miller, MD, PhD (1 shared paper).
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