Gregory James Bellig, M.D.
Anesthesiology Physician · Danville, CA
Gregory James Bellig, M.D. is an anesthesiology physician with a practice address in Danville, California, and NPI 1558354993, issued on Aug 30, 2005. Check the license (California A81822, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gregory James Bellig
- Credential
- M.D.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- A81822 CA
Self-reported in NPPES; status is on the state search - Practice location
- 402 Railroad Ave, Danville, CA 94526
- Phone
- (925) 272-9267
- Enumerated
- Aug 30, 2005
- Record last updated
- Feb 28, 2026
- Medicaid ID
- GR0028370 CA
- Medicare enrollment
- Enrolled (PECOS I20040513000550); accepts Medicare assignment
- Medical or professional school
- Georgetown University School Of Medicine, 1998
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 7,571 in California → Look up another NPI →
Verify Gregory James Bellig in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A81822Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 61.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Cep America - Anesthesia PCWalnut Creek, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory James Bellig among 7,571 anesthesiology physician records in California
Gregory James Bellig, M.D. is one of 7,571 anesthesiology physician records with a practice address in California. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1998 · median 2006 among the 4,868 with a school on file
- Record last updated2026 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anesthesiology Physician providers in California
There are 7,571 anesthesiology physician records in California.
All 7,571 in California → Every provider in Danville → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Andrea Stark, M.D.Danville, CA 945261992778757
- Richard Shinaman, MDPleasant Hill, CA 945231760410625
- Arnold Weekes, MDAntioch, CA 945311023057833
- Minbo BaiConcord, CA 945201427510775
- James Korkos, MDConcord, CA 945201083986616
- Wilson Lee, MDConcord, CA 945201154697340
- Lisa Collins, MDFairfield, CA 945331841246931
- Joseph Dominguez, M.D.Fairfield, CA 945331003801556
Common questions
What is Gregory James Bellig, M.D.'s NPI number?
Gregory James Bellig, M.D.'s National Provider Identifier (NPI) is 1558354993, issued on Aug 30, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Gregory James Bellig, M.D. located?
The NPPES record lists a practice address at 402 Railroad Ave, Danville, CA, 94526. Phone: (925) 272-9267. Providers update this record themselves, so call before visiting.
How can I verify Gregory James Bellig, M.D.'s license?
NPPES lists California license number A81822, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Gregory James Bellig, M.D.'s MIPS final score?
The 2023 MIPS final score is 61.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.