Allison Zemek, MD
Anatomic Pathology & Clinical Pathology Physician · Downey, CA
Allison Zemek, MD is an anatomic pathology & clinical pathology physician with a practice address in Downey, California, and NPI 1255775698, issued on Apr 27, 2013. Check the license (California 131698, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Allison Zemek
- Credential
- MD
- Primary taxonomy
- Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
- License number
- 131698 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9333 Imperial Hwy, Downey, CA 90242
- Phone
- (562) 657-7500
- Enumerated
- Apr 27, 2013
- Record last updated
- Nov 2, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20190506000304); accepts Medicare assignment
- Medical or professional school
- Stanford University School Of Medicine, 2013
- Entity
- Type 1 · individual
8 nearest anatomic pathology & clinical pathology physician records → All 1,554 in California → Look up another NPI →
Also registered at 9333 Imperial Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gemma AbadPlastic Surgery Registered Nurse1740017649
- Omar Ahmed, M.D.Anesthesiology Physician1831439231
- Fataneh Amidi, MDObstetrics & Gynecology Physician1134357981
- Fariba Amini, RCPRegistered Respiratory Therapist1962984302
- Orland AndayaRegistered Respiratory Therapist1598247751
- Michelle Andersen, D.P.T.Physical Therapist1295165231
Verify Allison Zemek in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 131698Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Southern California Permanente Medical GroupAnaheim, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Allison Zemek among 1,554 anatomic pathology & clinical pathology physician records in California
Allison Zemek, MD is one of 1,554 anatomic pathology & clinical pathology physician records with a practice address in California. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 77% of them.
- NPI issued2013 · 77% of these records are older, 20% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2013 · median 2003 among the 891 with a school on file
- Record last updated2021 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0102X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anatomic Pathology & Clinical Pathology Physician providers in California
There are 1,554 anatomic pathology & clinical pathology physician records in California.
All 1,554 in California → Every provider in Downey → Anatomic Pathology & Clinical Pathology Physician nationwide →
The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes
- Grace Liu, MDDowney, CA 902421053555003
- Heshmat Cook, M.D.Downey, CA 902411639275324
- Lindsay Zamis Dellamaggiora, M.D.Downey, CA 902411083863112
- William Power, M.D.Gardena, CA 902471235126079
- Cyrus Oster, M.D.Culver City, CA 902321285995183
- Kenneth Clark, M.D.Culver City, CA 902301093012783
- Barbara Biela, M.D., PH.D.Lynwood, CA 902621669575593
- Gary Garshfield, MDLynwood, CA 902621013971738
Common questions
What is Allison Zemek, MD's NPI number?
Allison Zemek, MD's National Provider Identifier (NPI) is 1255775698, issued on Apr 27, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Allison Zemek, MD located?
The NPPES record lists a practice address at 9333 Imperial Hwy, Downey, CA, 90242. Phone: (562) 657-7500. Providers update this record themselves, so call before visiting.
How can I verify Allison Zemek, MD's license?
NPPES lists California license number 131698, 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.