Rachel Zabner Spielberger, M.D.
Infectious Disease Physician · Los Angeles, CA
Rachel Zabner Spielberger, M.D. is an infectious disease physician with a practice address in Los Angeles, California, and NPI 1033149703, issued on Jul 5, 2006. Check the license (California 53035, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Rachel Zabner Spielberger
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License numbers
- 53035 CA
A53035 CA
Self-reported in NPPES; status is on the state search - Practice location
- 8635 W 3RD St Ste 465W, Los Angeles, CA 90048
- Phone
- (310) 358-2300
- Enumerated
- Jul 5, 2006
- Record last updated
- May 30, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (310) 358-2308
- Medicaid ID
- 00A530350 CA
- Medicare enrollment
- Enrolled (PECOS I20120206000289); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 1,119 in California → Look up another NPI →
Also registered at 8635 W 3RD St Ste 465W
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Nicole Fossas Braegger, MDInfectious Disease Physician1336708825
- Aaron KwongInfectious Disease Physician1255867826
- Hayden Lowenstein, M.D.Infectious Disease Physician1437446648
- Jillian Oft, MDInfectious Disease Physician1184940876
- Gisela Rosario Rosario, M.D.Infectious Disease Physician1073873733
Verify Rachel Zabner Spielberger in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 53035Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% fewer Medicare Part D claims than the average infectious disease physician in 2024
481 Medicare Part D claims for 99 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.
Most prescribed
- Biktarvy56 claims
- Voriconazole52 claims
- Azithromycin42 claims
- Valacyclovir27 claims
- Cephalexin26 claims
- Amoxicillin23 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 85.7 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
- Cedars-Sinai Medical Care FoundationLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rachel Zabner Spielberger among 1,119 infectious disease physician records in California
Rachel Zabner Spielberger, M.D. is one of 1,119 infectious disease physician records with a practice address in California. 79% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 54% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1986 · median 2003 among the 735 with a school on file
- Record last updated2019 · 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 207RI0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in California
There are 1,119 infectious disease physician records in California.
All 1,119 in California → Every provider in Los Angeles → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Randy Feldman, M.D.Los Angeles, CA 900481538192588
- Paula Gaut, M.D.Los Angeles, CA 900481215965348
- Lena HeungWest Hollywood, CA 900481326257106
- Ziba Jalali, MDWest Hollywood, CA 900481902855232
- Jia-Yia Liu, MDWest Hollywood, CA 900481639162266
- Aruna Murthy, M.D.Los Angeles, CA 900481386672418
- Irving Posalski, M.D.Los Angeles, CA 900481336172378
- Jeffrey Rapp, M.D.Los Angeles, CA 900481619995073
Common questions
What is Rachel Zabner Spielberger, M.D.'s NPI number?
Rachel Zabner Spielberger, M.D.'s National Provider Identifier (NPI) is 1033149703, issued on Jul 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Rachel Zabner Spielberger, M.D. located?
The NPPES record lists a practice address at 8635 W 3RD St Ste 465W, Los Angeles, CA, 90048. Phone: (310) 358-2300. Providers update this record themselves, so call before visiting.
How can I verify Rachel Zabner Spielberger, M.D.'s license?
NPPES lists California license number 53035, 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 Rachel Zabner Spielberger, M.D. prescribe under Medicare Part D?
In 2024, Rachel Zabner Spielberger, M.D. had 481 Medicare Part D claims for 99 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
What is Rachel Zabner Spielberger, M.D.'s MIPS final score?
The 2023 MIPS final score is 85.7 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.