Hilary Siebens, MD
NPI 1639334790 · Physical Medicine & Rehabilitation Physician · Seal Beach, CA
Hilary Siebens, MD is a Physical Medicine & Rehabilitation Physician provider in Seal Beach, CA (NPI 1639334790).
Provider details
- NPI number
- 1639334790
- Entity type
- Individual
- Primary specialty
- Physical Medicine & Rehabilitation PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- G61003 (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
17 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
- 2008-07-28
- Last updated
- 2008-07-28
Frequently asked questions
- What is Hilary Siebens's NPI number?
- Hilary Siebens's National Provider Identifier (NPI) is 1639334790, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hilary Siebens's specialty?
- Hilary Siebens is listed in the NPPES registry with a primary specialty of Physical Medicine & Rehabilitation Physician (Allopathic & Osteopathic Physicians).
- Where is Hilary Siebens located?
- Hilary Siebens's practice location on file with NPPES is 13601 Del Monte Dr, Seal Beach, CA 90740-6722.
- What is Hilary Siebens's phone number?
- The practice phone number listed in the NPPES registry for Hilary Siebens is (949) 735-6813.
- Is Hilary Siebens's NPI active?
- Yes — Hilary Siebens's NPI (1639334790) is active in the NPPES registry as of the last update on 2008-07-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.