SIQI MA DO
NPI 1659991933
Family Medicine in Clearlake, CA
About Siqi Ma Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SIQI MA DO (NPI 1659991933) is an individual family medicine provider in Clearlake, California, licensed in California (20A21190) and active in the NPI registry since April 2020. She is enrolled in Medicare PECOS and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses
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
Siqi Ma Do 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 Siqi Ma reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Oakland, CA 94609
- Reassigned Medicare billing, California enrollment
- 17 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 95422 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.
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 Siqi Ma's NPI number?
The NPI number for Siqi Ma is 1659991933. It was assigned to this individual provider in the NPPES registry on April 16, 2020.
Where is Siqi Ma located?
Siqi Ma practices at 15230 Lakeshore Dr, Clearlake, CA 95422. The listed phone number is (707) 995-4500.
What is Siqi Ma's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Siqi Ma enrolled in Medicare?
Yes. Siqi Ma 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 Siqi Ma's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Siqi Ma reassigns Medicare benefits to Hill Health Inc A Medical Corporation (Oakland, 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 Siqi Ma'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 Siqi Ma was last updated on October 20, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Siqi Ma, DO · NPI 1659991933
Family Medicine physician in Clearlake, California. Individual provider, active in the CMS NPPES registry since April 16, 2020.
## Identity
- **NPI:** 1659991933 (Entity type: Individual)
- **Enumerated:** April 16, 2020
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 20A21190 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 15230 LAKESHORE DR, Clearlake, CA 95422-8107
- **Phone:** (707) 995-4500
## 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:** Hill Health Inc A Medical Corporation (NPI 1245607456, Oakland, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** October 20, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1659991933) · Data from the CMS NPPES public registry.