ALLISON ZEMEK MD
NPI 1255775698
Pathology - Anatomic Pathology & Clinical Pathology in Downey, CA

Active since April 27, 2013PECOS EnrolledAccepts Medicare Assignment
9333 IMPERIAL HWY, DOWNEY, CA 90242(562) 657-7500 Get Directions Write a Review

NPPES record last updated: November 2, 2021. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Nov 2, 2021, Apr 10, 2021 (2 updates tracked since 2021).

About Allison Zemek Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ALLISON ZEMEK MD (NPI 1255775698) is an individual anatomic pathology & clinical pathology provider in Downey, California, licensed in California (131698) and active in the NPI registry since April 2013. She is enrolled in Medicare PECOS, maintains a secondary practice location in Stanford, and is a graduate of Stanford University School Of Medicine (2013).

NPPES Registry Identity

NPI1255775698
Entity TypeIndividualFemale
Primary Taxonomy207ZP0102X
Provider Legal NameALLISON ZEMEKCredential: MD
Location Address9333 IMPERIAL HWYDowney, CA 90242-2812
Mailing Address9333 Imperial HwyDowney, CA 90242-2812 · (562) 657-7500
Sole ProprietorYes
Medical School CMSStanford University School Of MedicineGraduated 2013
Enumeration DateApril 27, 2013
Last NPPES UpdateNovember 2, 20212 updates tracked since enumeration
NPPES CertifiedNovember 2, 2021
NPI 1255775698 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0102X
License Licensed in CA · 131698
Definition
A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.
9333 IMPERIAL HWY, Downey, CA 90242

Secondary Practice Location 1

Location 1300 Pasteur DrStanford, CA 94305-2200 · Phone (650) 723-4000

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Allison Zemek Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4981946357
PECOS Enrollment IDI20190506000304
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Pathology examination of tissue using a microscope, intermediate complexity 88305
A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.
23 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90242 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Internal Medicine
9333 IMPERIAL HWY
DOWNEY, CA 90242
Pharmacist
9333 IMPERIAL HWY, 1ST FLOOR OUTPATIENT PHARMACY
DOWNEY, CA 90242
Respiratory Therapist, Registered (Neonatal/Pediatrics)
9333 IMPERIAL HWY
DOWNEY, CA 90242
Internal Medicine (Cardiovascular Disease)
9333 IMPERIAL HWY, DOWNEY
DOWNEY, CA 90242
Emergency Medicine
9333 IMPERIAL HWY
DOWNEY, CA 90242
Pharmacist
9333 IMPERIAL HWY
DOWNEY, CA 90242
Pharmacist
9333 IMPERIAL HWY
DOWNEY, CA 90242
Obstetrics & Gynecology
9333 IMPERIAL HWY
DOWNEY, CA 90242

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Allison Zemek's NPI number?

The NPI number for Allison Zemek is 1255775698. It was assigned to this individual provider in the NPPES registry on April 27, 2013.

Where is Allison Zemek located?

Allison Zemek practices at 9333 Imperial Hwy, Downey, CA 90242. The listed phone number is (562) 657-7500.

What is Allison Zemek's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Is Allison Zemek enrolled in Medicare?

Yes. Allison Zemek is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Allison Zemek was last updated on November 2, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.