Hannah Grossman, MD
NPI 1649321290 · Gynecology Physician · Thousand Oaks, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Hannah Grossman, MD is a Gynecology Physician provider in Thousand Oaks, CA (NPI 1649321290).
Provider details
- NPI number
- 1649321290
- Entity type
- Individual
- Primary specialty
- Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- G051580 (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
19 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
- 2007-01-12
- Last updated
- 2007-07-08
Frequently asked questions
- What is Hannah Grossman's NPI number?
- Hannah Grossman's National Provider Identifier (NPI) is 1649321290, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hannah Grossman's specialty?
- Hannah Grossman is listed in the NPPES registry with a primary specialty of Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Hannah Grossman located?
- Hannah Grossman's practice location on file with NPPES is 558 N Ventu Park Rd Ste a, Thousand Oaks, CA 91320-2752.
- What is Hannah Grossman's phone number?
- The practice phone number listed in the NPPES registry for Hannah Grossman is (818) 817-9832.
- Does Hannah Grossman accept Medicare?
- Hannah Grossman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Hannah Grossman's NPI active?
- Yes — Hannah Grossman's NPI (1649321290) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.