Gregory Scott Brewster, M.D.
Emergency Medicine Physician · Manhattan Beach, CA
Gregory Scott Brewster, M.D. is an emergency medicine physician with a practice address in Manhattan Beach, California, and NPI 1639164007, issued on Sep 13, 2005. Check the license (California A61173, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gregory Scott Brewster
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A61173 CA
Self-reported in NPPES; status is on the state search - Practice location
- 111 N Sepulveda Blvd Ste 210, Manhattan Beach, CA 90266
- Phone
- (310) 379-2134
- Enumerated
- Sep 13, 2005
- Record last updated
- Aug 13, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (310) 379-4856
- Medicaid ID
- 00A611730 CA
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 111 N Sepulveda Blvd Ste 210
A shared address usually means a shared clinic or building; it does not show who employs whom.
- James Buselli, M.D.Emergency Medicine Physician1932310877
- Michelle ChinMedical Physician Assistant1780112581
- Cary Gallardo, M.D.Emergency Medicine Physician1821119561
- Kenneth LalasFamily Nurse Practitioner1912458290
- Crystal Mac, PA-CPhysician Assistant1942721642
- Michela Maletis, PA-CPhysician Assistant1497245450
Verify Gregory Scott Brewster in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A61173Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
67% fewer Medicare Part D claims than the average emergency medicine physician in 2024
75 Medicare Part D claims for 51 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 90 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).
Gregory Scott Brewster among 7,751 emergency medicine physician records in California
Gregory Scott Brewster, M.D. is one of 7,751 emergency medicine physician records with a practice address in California. 81% 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, 96% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2012 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
22 emergency medicine physician records list a practice address in Manhattan Beach
They are 22 of the 675 NPPES records with a practice address in Manhattan Beach, and 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Manhattan Beach → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Peter Bloomfield, M.D.Manhattan Beach, CA 902661053424713
- James Buselli, M.D.Manhattan Beach, CA 902661932310877
- Jose Cervantes, MDManhattan Beach, CA 902661275589962
- Kathleen Edmunds, MDManhattan Beach, CA 902661619055696
- Cary Gallardo, M.D.Manhattan Beach, CA 902661821119561
- David Gutkin, D.O.Manhattan Beach, CA 902661518022524
- Rosanne Kay, MDManhattan Beach, CA 902661346332293
- Cindy Kuo, DOManhattan Beach, CA 902661609095017
Common questions
What is Gregory Scott Brewster, M.D.'s NPI number?
Gregory Scott Brewster, M.D.'s National Provider Identifier (NPI) is 1639164007, issued on Sep 13, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Scott Brewster, M.D. located?
The NPPES record lists a practice address at 111 N Sepulveda Blvd Ste 210, Manhattan Beach, CA, 90266. Phone: (310) 379-2134. Providers update this record themselves, so call before visiting.
How can I verify Gregory Scott Brewster, M.D.'s license?
NPPES lists California license number A61173, 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.
How much does Gregory Scott Brewster, M.D. prescribe under Medicare Part D?
In 2024, Gregory Scott Brewster, M.D. had 75 Medicare Part D claims for 51 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Gregory Scott Brewster, M.D.'s MIPS final score?
The 2023 MIPS final score is 90 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.