David Ying, M.D.
NPI 1730421116 · Rheumatology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Ying, M.D. is a Rheumatology Physician provider in San Francisco, CA (NPI 1730421116).
Provider details
- NPI number
- 1730421116
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A143091 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
13 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$83 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 1450 Treat Blvd # 200Walnut Creek, CA 94597-2168Phone: (925) 296-9060
Registry dates
- Enumerated
- 2013-03-22
- Last updated
- 2019-06-27
Frequently asked questions
- What is David Ying's NPI number?
- David Ying's National Provider Identifier (NPI) is 1730421116, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Ying's specialty?
- David Ying is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is David Ying located?
- David Ying's practice location on file with NPPES is 400 Parnassus Ave Fl B1, San Francisco, CA 94143-2202.
- What is David Ying's phone number?
- The practice phone number listed in the NPPES registry for David Ying is (415) 353-2497.
- Does David Ying accept Medicare?
- David Ying is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Ying's NPI active?
- Yes — David Ying's NPI (1730421116) is active in the NPPES registry as of the last update on 2019-06-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.