J Vasc Interv Radiol
AngiographyEmbolization, TherapeuticGastrointestinal Hemorrhage
Dr. Henry Koji Niho, MD
NPI1609040450PAC ID1850448978
- Part D claims, 2024
- 1,031
- Publications
- 1
- Hospital affiliations
- 1
- Industry payments
- $101
- Medical group
- 1
- Practice address
- 3440 E La Palma Ave, Anaheim, CA 92806
- Practice phone
- Call (714) 279-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Niho'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. Henry Koji Niho is a gastroenterologist in Anaheim, California
Dr. Niho practices at Orange County - Anaheim Medical Center in Anaheim, California, part of Kaiser Permanente.
Dr. Niho's NPI, 1609040450, was assigned on April 14, 2008. Dr. Niho graduated from Tufts University School Of Medicine in 2000. Dr. Niho's California license number on file is A78576.
NPI and contact details
- NPI
- 1609040450NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1850448978
- NPI enumeration date
- April 14, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (714) 279-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Henry Koji Niho practices at Orange County - Anaheim Medical Center in Anaheim, California
Dr. Niho's primary practice is Orange County - Anaheim Medical Center, at 3440 E La Palma Ave, Anaheim, CA 92806 in Orange County. The practice phone is (714) 279-4000.
- Orange County - Anaheim Medical Center3440 E La Palma Ave, Anaheim, CA 92806 · Orange CountyPhone(714) 279-4000
Source: Dmand AI Affiliation Data
Dr. Henry Koji Niho is affiliated with 2 sites of care and 1 medical group
Dr. Niho's primary practice is Orange County - Anaheim Medical Center in Anaheim, California, part of Kaiser Permanente. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Niho to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Henry Koji Niho's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Niho practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Orange County - Anaheim Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Henry Koji Niho is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Niho's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Niho is board certified in gastroenterology by the American Board of Internal Medicine. Dr. Niho has a license on file in California.
Specialties and state licenses
- Gastroenterology, CaliforniaPrimary
Gastroenterologists near Dr. Niho
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
1,977gastroenterologists in California31gastroenterologists in Anaheim7gastroenterologists at Orange County - Anaheim Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Henry Koji Niho's patients have a median age of 59
Across all payers, Dmand AI patient panel data puts Dr. Niho's median patient age at 59, with 56% women.
Dr. Niho's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women56%
- Men44%
Source: Dmand AI Patient Panel Data
Dr. Henry Koji Niho wrote 1,031 Medicare Part D claims in 2024
In 2024, Dr. Niho wrote 1,031 Medicare Part D claims for 448 patients. 88% of them were for generic drugs. CMS names the drug for 882 of them, across 16 drugs with 11 or more claims each, at $292,028 in total drug cost. In 2023, CMS named 840 claims across 21 drugs.
Part D claims, 20241,031
Drugs named by CMS16
Total drug cost$292,028
Part D patients448
Dr. Niho's Part D claims by kind of drug, 2024
- Generic908 claims88%
- Brand-name123 claims12%
Dr. Niho'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. Niho's Part D claims, 2024
- Opioids2%22 of 1,031 claims
- Antibiotics2%20 of 1,031 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: 8402024: 8825%
Drugs named by CMS: 16 in 2024, 21 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
How Dr. Henry Koji Niho takes part in Medicare
Dr. Niho accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
For MedTech and pharma teams
Find gastroenterologists like Dr. Niho by procedure volume and prescribing
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Dr. Henry Koji Niho has 1 publication on record
Dmand AI links 1 paper to Dr. Niho in 2009. Dr. Niho's most frequent co-authors are Nick G. Costouros, MD, Robert K. Kerlan, MD and Uma Mahadevan, MD.
Papers1
Dr. Niho's most frequent co-authors
- Nick G. Costouros, MD1 shared paper
- Robert K. Kerlan, MD1 shared paper
- Uma Mahadevan, MD1 shared paper
Recent publications by Dr. Niho
See who Dr. Niho researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Niho works with, so you can find a warm path to the right gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Henry Koji Niho received $101 in industry payments from 2017 to 2024
CMS Open Payments shows 4 general payments to Dr. Niho from 2 drug and device companies from 2017 to 2024. Food and beverage make up the largest share, 100% of the total. Boston Scientific Corporation paid the most, $53.
General payments to Dr. Niho by program year, 2017 to 2024
Companies that paid Dr. Niho the most, 2017 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Henry Koji Niho has 1 award and honors on record
Dmand AI lists 1 award for Dr. Niho, most recently CMS Stage 1 2012 in 2011.
Awards and honors for Dr. Niho
- 2011
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Henry Koji Niho graduated from Tufts University School Of Medicine
Dr. Niho graduated from Tufts University School Of Medicine in 2000.
- Medical school
- Board certified in gastroenterology
Source: Dmand AI Professional Profile Data
Dr. Henry Koji Niho accepts plans from 2 insurance carriers
Dr. Niho is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Niho accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Henry Koji Niho'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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)Doctors and Clinicians Utilization Data (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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Henry Koji Niho
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. Henry Koji Niho's NPI number?
Dr. Henry Koji Niho's NPI number is 1609040450. It was assigned on April 14, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Henry Koji Niho?
Dr. Henry Koji Niho is a gastroenterologist in Anaheim, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Henry Koji Niho practice?
Dr. Niho practices at 3440 E La Palma Ave, Anaheim, CA 92806. Dr. Niho's primary practice is Orange County - Anaheim Medical Center in Anaheim, California, part of Kaiser Permanente. Dmand AI also links Dr. Niho to 1 group practice or clinic.
What is Dr. Henry Koji Niho's office phone number?
The practice phone on file for Dr. Niho is (714) 279-4000.
What is Dr. Henry Koji Niho's medical license number?
Dr. Niho's California license number on file is A78576.
Which hospitals is Dr. Henry Koji Niho affiliated with?
Dr. Niho practices at Orange County - Anaheim Medical Center in Anaheim, California.
What medical group is Dr. Henry Koji Niho part of?
Dr. Niho is linked to Southern California Permanente Medical Group.
Does Dr. Henry Koji Niho accept Medicare?
Yes. CMS lists Dr. Niho as accepting Medicare assignment.
Is Dr. Henry Koji Niho board certified?
Yes. Dr. Niho is board certified in gastroenterology by the American Board of Internal Medicine.
Where did Dr. Henry Koji Niho go to medical school?
Dr. Niho graduated from Tufts University School Of Medicine in 2000.
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What drugs does Dr. Henry Koji Niho prescribe most?
In 2024 Medicare Part D data, Dr. Niho's most prescribed drugs by claims were Gavilyte-C, Omeprazole and Entecavir.
Has Dr. Henry Koji Niho received payments from drug or device companies?
CMS Open Payments shows $101 in general payments to Dr. Niho from 2 companies from 2017 to 2024. The largest total came from Boston Scientific Corporation.
How long has Dr. Henry Koji Niho been practicing?
Dr. Niho graduated from medical school in 2000, 26 years ago.
Does Dr. Henry Koji Niho do research?
Dmand AI links 1 publication to Dr. Niho.
Who does Dr. Henry Koji Niho publish with?
Dr. Niho's most frequent co-authors are Nick G. Costouros, MD (1 shared paper), Robert K. Kerlan, MD (1 shared paper) and Uma Mahadevan, MD (1 shared paper).
What insurance does Dr. Henry Koji Niho accept?
Dr. Niho is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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