Joyce Ma, MD-PHD
NPI 1811302789 · General Practice Physician · Redding, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joyce Ma, MD-PHD is a General Practice Physician provider in Redding, CA (NPI 1811302789).
Provider details
- NPI number
- 1811302789
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD-PHD
- Sex
- Female
- Sole proprietor
- No
- License
- A167379 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-06-30
- Last updated
- 2022-01-11
- Certified
- 2022-01-11
Frequently asked questions
- What is Joyce Ma's NPI number?
- Joyce Ma's National Provider Identifier (NPI) is 1811302789, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joyce Ma's specialty?
- Joyce Ma is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Joyce Ma located?
- Joyce Ma's practice location on file with NPPES is 630 Twin View Blvd, Redding, CA 96003-2010.
- What is Joyce Ma's phone number?
- The practice phone number listed in the NPPES registry for Joyce Ma is (650) 810-6208.
- Does Joyce Ma accept Medicare?
- Joyce Ma is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joyce Ma's NPI active?
- Yes — Joyce Ma's NPI (1811302789) is active in the NPPES registry as of the last update on 2022-01-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.