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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

ROMEO AIDANA CASTILLO MD
NPI 1659345403
Internal Medicine in Huntington Park, CA

Active since February 16, 2006PECOS Enrolled
2675 E SLAUSON AVE, ALL CARE MEDICAL GROUP INC, HUNTINGTON PARK, CA 90255(323) 589-6681(323) 584-2505 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Romeo Aidana Castillo Md NPPES

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

ROMEO AIDANA CASTILLO MD (NPI 1659345403) is an individual internal medicine provider in Huntington Park, California, licensed in California (A49358) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1659345403
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameROMEO AIDANA CASTILLOCredential: MD
Location Address2675 E SLAUSON AVE, ALL CARE MEDICAL GROUP INCHuntington Park, CA 90255
Mailing Address2675 E Slauson Ave, All Care Medical Group IncHuntington Park, CA 90255 · (323) 589-6681 · Fax (323) 584-2505
Phone(323) 589-6681
Fax(323) 584-2505
Sole ProprietorNo
Enumeration DateFebruary 16, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1659345403 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A49358
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
2675 E SLAUSON AVE, Huntington Park, CA 90255
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Other Identifiers 1

MedicaidGR0040370CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Romeo Aidana Castillo Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90255 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.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
4 suppliers11 claims23 services$3.16 avg. paid by Medicare
Albuterol, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose, 1 mg J7613
DME-Drugs Administered Through DME · category DG006N
2 suppliers11 claims1,369 services$0.03 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 6

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

OPTIMAL CARE MEDICAL GROUP
Internal Medicine
2675 E SLAUSON AVE
HUNTINGTON PARK, CA 90255
Los Angeles County (323) 749-6777
MS. ROBIN CARUSO BALTAXE MPH ALL COURSES PH.D
Health Educator
2675 E SLAUSON AVE
HUNTINGTON PARK, CA 90255
Los Angeles County (323) 589-6681
DR. JEFFTREY RONALD REISS M.D.
General Practice
2675 E SLAUSON AVE
HUNTINGTON PARK, CA 90255
Los Angeles County (213) 589-6681
EDMOND JANFAZA
Dentist
2675 E SLAUSON AVE
HUNTINGTON PARK, CA 90255
Los Angeles County (323) 589-3391
ALL CARE MEDICAL GROUP INC
Family Medicine
2675 E SLAUSON AVE, ALL CARE MEDICAL GROUP INC
HUNTINGTON PARK, CA 90255
Los Angeles County (323) 589-6681
DR. JAMAL U SIDDIQUI M.D.
Legal Medicine
2675 E SLAUSON AVE
HUNTINGTON PARK, CA 90255
Los Angeles County (323) 589-6681

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 Romeo Castillo's NPI number?

The NPI number for Romeo Castillo is 1659345403. It was assigned to this individual provider in the NPPES registry on February 16, 2006.

Where is Romeo Castillo located?

Romeo Castillo practices at 2675 E Slauson Ave All Care Medical Group Inc, Huntington Park, CA 90255. The listed phone number is (323) 589-6681.

What is Romeo Castillo's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Romeo Castillo enrolled in Medicare?

Yes. Romeo Castillo is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Romeo Castillo was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 25 days 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.