Aliya Gessling, M.D.
NPI 1912389149 · Hospice and Palliative Medicine (Internal Medicine) Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Aliya Gessling, M.D. is a Hospice and Palliative Medicine (Internal Medicine) Physician provider in Walnut Creek, CA (NPI 1912389149).
Provider details
- NPI number
- 1912389149
- Entity type
- Individual
- Primary specialty
- Hospice and Palliative Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A152979 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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
Additional practice locations (2)
- 2315 Stockton BlvdSacramento, CA 95817-2201Phone: (916) 734-4681
- 1220 Rossmoor PkwyWalnut Creek, CA 94595-2501Phone: (925) 937-3393
Registry dates
- Enumerated
- 2015-06-24
- Last updated
- 2023-01-08
- Certified
- 2023-01-08
Frequently asked questions
- What is Aliya Gessling's NPI number?
- Aliya Gessling's National Provider Identifier (NPI) is 1912389149, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Aliya Gessling's specialty?
- Aliya Gessling is listed in the NPPES registry with a primary specialty of Hospice and Palliative Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Aliya Gessling located?
- Aliya Gessling's practice location on file with NPPES is 1425 S Main St, Walnut Creek, CA 94596-5318.
- What is Aliya Gessling's phone number?
- The practice phone number listed in the NPPES registry for Aliya Gessling is (925) 295-4000.
- Does Aliya Gessling accept Medicare?
- Aliya Gessling is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Aliya Gessling's NPI active?
- Yes — Aliya Gessling's NPI (1912389149) is active in the NPPES registry as of the last update on 2023-01-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.