Brian Ralph Apter, M.D.
Hospitalist Physician · Pasadena, CA
Brian Ralph Apter, M.D. is a hospitalist physician with a practice address in Pasadena, California, and NPI 1134418171, issued on Mar 30, 2011. Check the license (California A130773, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Brian Ralph Apter
- Credential
- M.D.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- A130773 CA
Self-reported in NPPES; status is on the state search - Practice location
- 393 E Walnut St, Pasadena, CA 91188
- Phone
- (415) 310-1938
- Enumerated
- Mar 30, 2011
- Record last updated
- Nov 30, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20141112002564); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 393 E Walnut St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Leona Bell, RN CRNPPediatrics Physician1457342941
- Brett Bergman, MPA, PA-CPhysician Assistant1043649304
Verify Brian Ralph Apter in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A130773Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6% fewer Medicare Part D claims than the average hospitalist physician in 2024
491 Medicare Part D claims for 174 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
Most prescribed
- Furosemide46 claims
- Hydralazine Hcl36 claims
- Metoprolol Tartrate21 claims
- Amlodipine Besylate20 claims
- Atorvastatin Calcium20 claims
- Potassium Chloride19 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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupRiverside, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brian Ralph Apter among 3,099 hospitalist physician records in California
Brian Ralph Apter, M.D. is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 47% of them.
- NPI issued2011 · 47% of these records are older, 49% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2010 · median 2010 among the 2,505 with a school on file
- Record last updated2021 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Pasadena → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Aram GabrielyanGlendale, CA 912031770901985
- Aki Lo, M.D.Glendale, CA 912041235318015
- Gevorg Ghazaryan, MDGlendale, CA 912051629288329
- Minas Melidonian, M.DGlendale, CA 912061518254457
- Tigran Tiraturyan, M.D.Glendale, CA 912061134650435
- Patrick Baghdasaryan, M.D.Glendale, CA 912071912448358
- Areg HovsepyanGlendale, CA 912081366071052
- Ivan Kim, MDSan Marino, CA 911081760644843
Common questions
What is Brian Ralph Apter, M.D.'s NPI number?
Brian Ralph Apter, M.D.'s National Provider Identifier (NPI) is 1134418171, issued on Mar 30, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Brian Ralph Apter, M.D. located?
The NPPES record lists a practice address at 393 E Walnut St, Pasadena, CA, 91188. Phone: (415) 310-1938. Providers update this record themselves, so call before visiting.
How can I verify Brian Ralph Apter, M.D.'s license?
NPPES lists California license number A130773, 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 Brian Ralph Apter, M.D. prescribe under Medicare Part D?
In 2024, Brian Ralph Apter, M.D. had 491 Medicare Part D claims for 174 beneficiaries; the average among hospitalist physician prescribers was 521. 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.