Gregory S. Thomas, M.D.
Cardiovascular Disease Physician · Long Beach, CA
Gregory S. Thomas, M.D. is a cardiovascular disease physician with a practice address in Long Beach, California, and NPI 1407834146, issued on Jan 4, 2006. Check the license (California G49797, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gregory S. Thomas
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- G49797 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2865 Atlantic Ave, Long Beach, CA 90806
- Phone
- (562) 933-1820
- Enumerated
- Jan 4, 2006
- Record last updated
- Aug 27, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (562) 933-1819
- Medicaid ID
- 00G497970 CA
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 2,574 in California → Look up another NPI →
Also registered at 2865 Atlantic Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Vanessa Kaleb, M.D.Obstetrics Physician1891804803
- Anaida Melkumian, MDGeneral Practice Physician1275584898
Verify Gregory S. Thomas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G49797Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $321.71
5 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 16,686 providers of this specialty with any payment received $3,819.56 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Gregory S. Thomas among 2,574 cardiovascular disease physician records in California
Gregory S. Thomas, M.D. is one of 2,574 cardiovascular disease physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 45% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2013 · 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 207RC0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in California
There are 2,574 cardiovascular disease physician records in California.
All 2,574 in California → Every provider in Long Beach → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Parvataneni Arun, M.D.Long Beach, CA 908061538111547
- Ernest Curtis, MDLong Beach, CA 908061205913621
- Alan Hermer, MDLong Beach, CA 908061427088293
- Stanley Kawanishi, M.D.Long Beach, CA 908061144288242
- Krishna Manvi, M.D.Long Beach, CA 908061083666051
- Minh Nguyen, MDLong Beach, CA 908061528166105
- Chris Pan, MD. MBA. MS.Long Beach, CA 908061841515509
- Ron Sklash, M.D.Long Beach, CA 908061598914574
Common questions
What is Gregory S. Thomas, M.D.'s NPI number?
Gregory S. Thomas, M.D.'s National Provider Identifier (NPI) is 1407834146, issued on Jan 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory S. Thomas, M.D. located?
The NPPES record lists a practice address at 2865 Atlantic Ave, Long Beach, CA, 90806. Phone: (562) 933-1820. Providers update this record themselves, so call before visiting.
How can I verify Gregory S. Thomas, M.D.'s license?
NPPES lists California license number G49797, 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.
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.