Siqi Ma, DO
NPI 1659991933 · Family Medicine Physician · Clearlake, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Siqi Ma, DO is a Family Medicine Physician provider in Clearlake, CA (NPI 1659991933).
Provider details
- NPI number
- 1659991933
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 7451 (OK)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 75 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 267 | 51 |
| Atorvastatin Calcium | 246 | 66 |
| Omeprazole | 161 | 38 |
| Amlodipine Besylate | 160 | 48 |
| Lisinopril | 145 | 33 |
| Metformin Hcl | 108 | 31 |
| Gabapentin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-04-16
- Last updated
- 2023-10-20
- Certified
- 2023-10-20
Frequently asked questions
- What is Siqi Ma's NPI number?
- Siqi Ma's National Provider Identifier (NPI) is 1659991933, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Siqi Ma's specialty?
- Siqi Ma is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Siqi Ma located?
- Siqi Ma's practice location on file with NPPES is 15230 Lakeshore Dr, Clearlake, CA 95422-8107.
- What is Siqi Ma's phone number?
- The practice phone number listed in the NPPES registry for Siqi Ma is (707) 995-4500.
- Does Siqi Ma accept Medicare?
- Siqi Ma is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Siqi Ma's NPI active?
- Yes — Siqi Ma's NPI (1659991933) is active in the NPPES registry as of the last update on 2023-10-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.