Gregory Bellig, M.D.
NPI 1558354993 · Anesthesiology Physician · Danville, CA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Bellig, M.D. is a Anesthesiology Physician provider in Danville, CA (NPI 1558354993).
Provider details
- NPI number
- 1558354993
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A81822 (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
- 2005-08-30
- Last updated
- 2026-02-28
- Certified
- 2026-02-28
Frequently asked questions
- What is Gregory Bellig's NPI number?
- Gregory Bellig's National Provider Identifier (NPI) is 1558354993, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Bellig's specialty?
- Gregory Bellig is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Bellig located?
- Gregory Bellig's practice location on file with NPPES is 402 Railroad Ave, Danville, CA 94526-3825.
- What is Gregory Bellig's phone number?
- The practice phone number listed in the NPPES registry for Gregory Bellig is (925) 272-9267.
- Does Gregory Bellig accept Medicare?
- Gregory Bellig is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Bellig's NPI active?
- Yes — Gregory Bellig's NPI (1558354993) is active in the NPPES registry as of the last update on 2026-02-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.