1. Home
  2. Directory
  3. California
  4. Arcadia
  5. Pathology
  6. NPI Profile

ROGER E DER M.D.
NPI 1558355156
Pathology - Anatomic Pathology & Clinical Pathology in Arcadia, CA

Active since September 09, 2005PECOS EnrolledAccepts Medicare Assignment
100/100
CMS Quality Rating
300 W HUNTINGTON DR, ARCADIA, CA 91007(626) 574-3488(626) 821-6934 Get Directions Write a Review

NPPES record last updated: March 11, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Roger E Der M.d. NPPES

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

ROGER E DER M.D. (NPI 1558355156) is an individual anatomic pathology & clinical pathology provider in Arcadia, California, licensed in California (A65753) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS and is a graduate of University Of Southern California Keck School Of Medicine (1996).

NPPES Registry Identity

NPI1558355156
Entity TypeIndividualMale
Primary Taxonomy207ZP0102X
Provider Legal NameROGER E DERCredential: M.D.
Location Address300 W HUNTINGTON DRArcadia, CA 91007-3402
Mailing Address300 W Huntington DrArcadia, CA 91007-3402 · (626) 574-3488 · Fax (626) 821-6934
Phone(626) 574-3488
Fax(626) 821-6934
Sole ProprietorYes
Medical School CMSUniversity Of Southern California Keck School Of MedicineGraduated 1996
Enumeration DateSeptember 9, 2005
Last NPPES UpdateMarch 11, 2025
NPPES CertifiedMarch 11, 2025
✔ NPI 1558355156 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0102X
License✔ Licensed in CA · A65753
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.
300 W HUNTINGTON DR, Arcadia, CA 91007
Open in Google Maps ↗

Other Identifiers 1

Medicaid00A657530CA

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

Roger E Der M.d. 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 ID9638172091
PECOS Enrollment IDI20060824000535
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 11

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.
733 services417 patients
Pathology examination of tissue using a microscope, moderately low complexity 88304
A pathology examination of tissue, moderately low complexity, involves studying a small sample of your body tissue under a microscope. It helps to identify any abnormal cells or diseases. It's a routine procedure, not complex, and provides crucial insights for your diagnosis.
322 services307 patients
Special stained specimen slides to examine tissue, each additional procedure 88341
Special stained specimen slides are used to analyze tissue in detail. In this process, extra procedures may be needed for a more thorough examination. These involve applying special stains to the tissue on slides, enhancing specific elements for closer study.
294 services56 patients
Preparation of tissue for examination by removing any calcium present 88311
This procedure involves treating tissue samples to remove any calcium, which can interfere with the examination. The tissue is soaked in a special solution that safely dissolves the calcium, leaving the tissue intact for accurate analysis. This helps in making precise diagnoses.
262 services251 patients
Special stained specimen slides to identify organisms including interpretation and report 88312
This service involves coloring specimen slides in a special way to help identify organisms. The colors make different parts of the organism stand out. Afterward, a detailed interpretation and report on the findings are provided.
204 services157 patients
Pathology examination of tissue using a microscope, moderately high complexity 88307
A pathology examination of tissue with moderate complexity involves a detailed study of a small tissue sample from your body. Using a microscope, experts analyze the tissue's structure and cells to identify any abnormalities. This helps in diagnosing various health conditions accurately.
100 services63 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91007 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality80.87
Improvement Activities40

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.

DR. JUAN CARLOS ECHEVERRIA M.D.
Radiology (Vascular & Interventional Radiology)
300 W HUNTINGTON DR
ARCADIA, CA 91007
Los Angeles County (626) 898-8004
DANIEL PIENING MD
Emergency Medicine
300 W HUNTINGTON DR
ARCADIA, CA 91007
Los Angeles County (626) 898-8000
MELODY MELOSERDOFF RD
Dietitian, Registered
300 W HUNTINGTON DR
ARCADIA, CA 91007
Los Angeles County (626) 898-8000
NATALIE Z MILLS M.D.
Pathology (Cytopathology)
300 W HUNTINGTON DR
ARCADIA, CA 91007
Los Angeles County (626) 445-4441
DR. RAHTNA BANERJEE M.D.
Anesthesiology
300 W HUNTINGTON DR
ARCADIA, CA 91007
Los Angeles County (626) 898-8000
ERIC GABRIEL BARRETTO RN
Registered Nurse
300 W HUNTINGTON DR
ARCADIA, CA 91007
Los Angeles County (626) 574-3701
DR. ALAN C SCHLAERTH M.D.
Obstetrics & Gynecology (Gynecologic Oncology)
300 W HUNTINGTON DR, PACIFIC GYNECOLOGIC SPECIALISTS
ARCADIA, CA 91007
Los Angeles County (626) 898-8198
RAVINDRAKUMAR G GURUSWAMY M. D., MPH
Hospitalist
300 W HUNTINGTON DR
ARCADIA, CA 91007
Los Angeles County (626) 795-2244

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 Roger Der's NPI number?

The NPI number for Roger Der is 1558355156. It was assigned to this individual provider in the NPPES registry on September 9, 2005.

Where is Roger Der located?

Roger Der practices at 300 W Huntington Dr, Arcadia, CA 91007. The listed phone number is (626) 574-3488.

What is Roger Der's specialty?

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

Is Roger Der enrolled in Medicare?

Yes. Roger Der 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 Roger Der was last updated on March 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months 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.