Alexander Geng Inc
NPI 1992394811 · Radiation Oncology Physician · San Francisco, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alexander Geng Inc is a Radiation Oncology Physician organization in San Francisco, CA (NPI 1992394811).
Provider details
- NPI number
- 1992394811
- Entity type
- Organization
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Alexander Geng, Physician/Owner(415) 353-6420
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
5 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
- 2021-01-14
- Last updated
- 2021-01-14
- Certified
- 2021-01-14
Frequently asked questions
- What is Alexander Geng Inc's NPI number?
- Alexander Geng Inc's National Provider Identifier (NPI) is 1992394811, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Alexander Geng Inc?
- Alexander Geng Inc is classified in the NPPES registry as Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Alexander Geng Inc located?
- Alexander Geng Inc's practice location on file with NPPES is 900 Hyde St, San Francisco, CA 94109-4806.
- What is Alexander Geng Inc's phone number?
- The practice phone number listed in the NPPES registry for Alexander Geng Inc is (415) 353-6420.
- Does Alexander Geng Inc accept Medicare?
- Alexander Geng 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 Alexander Geng Inc?
- The authorized official listed on Alexander Geng Inc's NPPES record is Alexander Geng, Physician/Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Alexander Geng Inc's NPI active?
- Yes — Alexander Geng Inc's NPI (1992394811) is active in the NPPES registry as of the last update on 2021-01-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.