Dr. Aki Niihara, MD
- Part D claims, 2018
- 21
- Hospital affiliations
- 1
- Industry payments
- $50
- Medical group
- 1
- Insurance carriers
- 2
- Practice address
- 14445 Olive View Drive, Sylmar, CA 91342
- Practice phone
- Call (818) 364-1555
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Niihara'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. Aki Niihara is an OB-GYN in Sylmar, California
Dr. Niihara practices at Olive View-UCLA Medical Center in Sylmar, California, part of County of Los Angeles.
Dr. Niihara's NPI, 1114286952, was assigned on May 14, 2012. Dr. Niihara graduated from University of Illinois College of Medicine - Chicago in 2012. Dr. Niihara holds California license A128800.
- NPI
- 1114286952NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9537483870
- NPI enumeration date
- May 14, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (818) 364-1555
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Aki Niihara practices at Olive View-UCLA Medical Center in Sylmar, California
Dr. Niihara's primary practice is Olive View-UCLA Medical Center, at 14445 Olive View Drive, Sylmar, CA 91342 in Los Angeles County. The practice phone is (818) 364-1555.
- Olive View-UCLA Medical Center14445 Olive View Drive, Sylmar, CA 91342 · Los Angeles CountyPhone(818) 364-1555
Source: Dmand AI Affiliation Data
Dr. Aki Niihara is affiliated with 2 sites of care and 1 medical group
Dr. Niihara's primary practice is Olive View-UCLA Medical Center in Sylmar, California, part of County of Los Angeles. The medical group on file is Harbor-UCLA Medical Center. Dmand AI also links Dr. Niihara to 1 more ambulatory surgery center, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Aki Niihara's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Niihara practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Olive View-UCLA Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Aki Niihara is one of 4,642 OB-GYNs in California
Obstetrics and gynecology is Dr. Niihara's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Niihara is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology. Dr. Niihara is licensed in California.
Specialties and state licenses
- Obstetrics and gynecology, CaliforniaPrimary
Clinical focus
Dmand AI lists menopause among the conditions Dr. Niihara treats.
OB-GYNs near Dr. Niihara
Counts of OB-GYNs 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. Aki Niihara's patients have a median age of 35
Across all payers, Dmand AI patient panel data puts Dr. Niihara's median patient age at 35, with 99% women.
Dr. Niihara's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 35
Patient panel by sex, all payers
- Women99%
- Men1%
Source: Dmand AI Patient Panel Data
Dr. Aki Niihara wrote 21 Medicare Part D claims in 2018
In 2018, Dr. Niihara wrote 21 Medicare Part D claims. They cover 1 drug, with $2,877 in total drug cost.
Dr. Niihara's most prescribed drugs by claims, 2018
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
How Dr. Aki Niihara takes part in Medicare
Dr. Niihara accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Aki Niihara received $50 in industry payments in 2019
CMS Open Payments shows 1 general payment to Dr. Niihara from 1 drug or device company in 2019. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $50.
Companies that paid Dr. Niihara the most, 2019 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Aki Niihara graduated from University of Illinois College of Medicine - Chicago
Dr. Niihara graduated from University of Illinois College of Medicine - Chicago in 2012.
- Medical school
- Board certified in obstetrics & gynecology
Source: Dmand AI Professional Profile Data
Dr. Aki Niihara accepts plans from 2 insurance carriers
Dr. Niihara is in network with 2 carriers, including LA Care and CMS Medicare. HMO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- LA Care
- CMS Medicare
Plan types Dr. Niihara accepts, by number of carriers
- HMO1
- Medicaid1
- Medicare1
Source: Dmand AI Insurance Network Data
Sources for Dr. Aki Niihara'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Aki Niihara
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. Aki Niihara's NPI number?
Dr. Aki Niihara's NPI number is 1114286952. It was assigned on May 14, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Aki Niihara?
Dr. Aki Niihara is an OB-GYN in Sylmar, California. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Aki Niihara practice?
Dr. Niihara practices at 14445 Olive View Drive, Sylmar, CA 91342. Dr. Niihara's primary practice is Olive View-UCLA Medical Center in Sylmar, California, part of County of Los Angeles. Dmand AI also links Dr. Niihara to 1 ambulatory surgery center.
What is Dr. Aki Niihara's office phone number?
The practice phone on file for Dr. Niihara is (818) 364-1555.
What is Dr. Aki Niihara's medical license number?
Dr. Niihara holds California license A128800.
Which hospitals is Dr. Aki Niihara affiliated with?
Dr. Niihara practices at Olive View-UCLA Medical Center in Sylmar, California.
What medical group is Dr. Aki Niihara part of?
Dr. Niihara is linked to Harbor-UCLA Medical Center.
Does Dr. Aki Niihara accept Medicare?
Yes. CMS lists Dr. Niihara as accepting Medicare assignment.
Is Dr. Aki Niihara board certified?
Yes. Dr. Niihara is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology.
Where did Dr. Aki Niihara go to medical school?
Dr. Niihara graduated from University of Illinois College of Medicine - Chicago in 2012.
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What drugs does Dr. Aki Niihara prescribe most?
In 2018 Medicare Part D data, Dr. Niihara's most prescribed drugs by claims were Estrace.
Has Dr. Aki Niihara received payments from drug or device companies?
CMS Open Payments shows $50 in general payments to Dr. Niihara from 1 company from 2019 to 2019. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Aki Niihara been practicing?
Dr. Niihara graduated from medical school in 2012, 14 years ago.
What insurance does Dr. Aki Niihara accept?
Dr. Niihara is in network with 2 carriers, including LA Care and CMS Medicare. HMO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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