Stephen S Chen MD Inc
NPI 1558855437 · Sports Medicine (Orthopaedic Surgery) Physician · Walnut Creek, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen S Chen MD Inc is a Sports Medicine (Orthopaedic Surgery) Physician organization in Walnut Creek, CA (NPI 1558855437).
Provider details
- NPI number
- 1558855437
- Entity type
- Organization
- Primary specialty
- Sports Medicine (Orthopaedic Surgery) PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Margaret Raskowsky, Manager(415) 491-1210
- License
- A107350 (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
8 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
- 2018-06-14
- Last updated
- 2020-01-08
- Certified
- 2020-01-08
Frequently asked questions
- What is Stephen S Chen MD Inc's NPI number?
- Stephen S Chen MD Inc's National Provider Identifier (NPI) is 1558855437, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Stephen S Chen MD Inc?
- Stephen S Chen MD Inc is classified in the NPPES registry as Sports Medicine (Orthopaedic Surgery) Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen S Chen MD Inc located?
- Stephen S Chen MD Inc's practice location on file with NPPES is 1777 Botelho Dr Ste 110, Walnut Creek, CA 94596-5083.
- What is Stephen S Chen MD Inc's phone number?
- The practice phone number listed in the NPPES registry for Stephen S Chen MD Inc is (925) 934-3536.
- Does Stephen S Chen MD Inc accept Medicare?
- Stephen S Chen MD Inc is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Stephen S Chen MD Inc?
- The authorized official listed on Stephen S Chen MD Inc's NPPES record is Margaret Raskowsky, Manager. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Stephen S Chen MD Inc's NPI active?
- Yes — Stephen S Chen MD Inc's NPI (1558855437) is active in the NPPES registry as of the last update on 2020-01-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.