Brock Houston Summers, M.D.
Psychiatry Physician · Glendale, CA
Brock Houston Summers, M.D. is a psychiatry physician with a practice address in Glendale, California, and NPI 1457492555, issued on Feb 9, 2007. Check the license (California G-67320, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Brock Houston Summers
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- G-67320 CA
Self-reported in NPPES; status is on the state search - Practice location
- 222 W Eulalia St, Glendale, CA 91204
- Phone
- (818) 240-0108
- Enumerated
- Feb 9, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 222 W Eulalia St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ray Bloss, PA-CPhysician Assistant1174733265
- John Cabrera, M.DObstetrics & Gynecology Physician1992798730
Verify Brock Houston Summers in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G-67320Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average psychiatry physician in 2024
66 Medicare Part D claims, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Bupropion Xl11 claims
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.
Industry payments in 2024: $61.10
2 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,693 providers of this specialty with any payment received $4,954.93 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.
Brock Houston Summers among 8,673 psychiatry physician records in California
Brock Houston Summers, M.D. is one of 8,673 psychiatry physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 33% of them.
- NPI issued2007 · 33% of these records are older, 48% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2007 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in California
There are 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Glendale → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Tiffany Cao, M.D.Glendale, CA 912041013351501
- Arakel Davtian, MDGlendale, CA 912041275584260
- Thomas Hughes, M.D.Glendale, CA 912041720535438
- Aditya LakhaniGlendale, CA 912041689303786
- Richard Ciasca, M.D.Glendale, CA 912051568505931
- Sara Epstein, MDGlendale, CA 912031912930884
- Anahit Matevosyan, MDGlendale, CA 912031255463899
- George Sabounjian, M.D.Glendale, CA 912051699882779
Common questions
What is Brock Houston Summers, M.D.'s NPI number?
Brock Houston Summers, M.D.'s National Provider Identifier (NPI) is 1457492555, issued on Feb 9, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Brock Houston Summers, M.D. located?
The NPPES record lists a practice address at 222 W Eulalia St, Glendale, CA, 91204. Phone: (818) 240-0108. Providers update this record themselves, so call before visiting.
How can I verify Brock Houston Summers, M.D.'s license?
NPPES lists California license number G-67320, 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 Brock Houston Summers, M.D. prescribe under Medicare Part D?
In 2024, Brock Houston Summers, M.D. had 66 Medicare Part D claims; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
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.