Steven Hammerschlag, M.D.
NPI 1518950658 · Diagnostic Radiology Physician · Oakland, CA
Steven Hammerschlag, M.D. is a Diagnostic Radiology Physician provider in Oakland, CA (NPI 1518950658).
Provider details
- NPI number
- 1518950658
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A30603 (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
20 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
- 2005-08-24
- Last updated
- 2015-02-12
Frequently asked questions
- What is Steven Hammerschlag's NPI number?
- Steven Hammerschlag's National Provider Identifier (NPI) is 1518950658, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steven Hammerschlag's specialty?
- Steven Hammerschlag is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Steven Hammerschlag located?
- Steven Hammerschlag's practice location on file with NPPES is 411 30th St, Oakland, CA 94609-3310.
- What is Steven Hammerschlag's phone number?
- The practice phone number listed in the NPPES registry for Steven Hammerschlag is (925) 274-4950.
- Is Steven Hammerschlag's NPI active?
- Yes — Steven Hammerschlag's NPI (1518950658) is active in the NPPES registry as of the last update on 2015-02-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.