AKI NIIHARA M.D.
NPI 1114286952
Obstetrics & Gynecology in Lancaster, CA
About Aki Niihara M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
AKI NIIHARA M.D. (NPI 1114286952) is an individual obstetrics & gynecology provider in Lancaster, California, licensed in California (A128800) and active in the NPI registry since May 2012. She is enrolled in Medicare PECOS, maintains a secondary practice location in Los Angeles, and is a graduate of Other (2012).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Aki Niihara M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Aki Niihara reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Lancaster, CA 93535
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1366453045 (California)
- 1,939 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 93535 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LANCASTER, CA 93535
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Aki Niihara's NPI number?
The NPI number for Aki Niihara is 1114286952. It was assigned to this individual provider in the NPPES registry on May 14, 2012.
Where is Aki Niihara located?
Aki Niihara practices at 335 E Avenue I, Lancaster, CA 93535. The listed phone number is (323) 243-2214.
What is Aki Niihara's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Aki Niihara enrolled in Medicare?
Yes. Aki Niihara is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Aki Niihara's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Aki Niihara reassigns Medicare benefits to County Of Los Angeles (Lancaster, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Aki Niihara's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Aki Niihara was last updated on June 16, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Aki Niihara, M.D. · NPI 1114286952
Obstetrics & Gynecology physician in Lancaster, California. Individual provider, active in the CMS NPPES registry since May 14, 2012.
## Identity
- **NPI:** 1114286952 (Entity type: Individual)
- **Enumerated:** May 14, 2012
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** A128800 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 335 E AVENUE I, Lancaster, CA 93535-1916
- **Phone:** (323) 243-2214
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** County Of Los Angeles (NPI 1205354370, Lancaster, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2012
## Record status
- **NPPES last updated:** June 16, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1114286952) · Data from the CMS NPPES public registry.