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DR. RICARDO ANTONIO TAN MD
NPI 1255353629
Allergy & Immunology - Allergy in Los Angeles, CA

Active since July 24, 2006PECOS EnrolledAccepts Medicare Assignment
1950 SAWTELLE BLVD STE 138, LOS ANGELES, CA 90025(310) 966-9022(310) 966-9042 Get Directions Write a Review

NPPES record last updated: March 24, 2017. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Ricardo Antonio Tan Md NPPES

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

DR. RICARDO ANTONIO TAN MD (NPI 1255353629) is an individual allergy provider in Los Angeles, California, licensed in California (A052236) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1986).

NPPES Registry Identity

NPI1255353629
Entity TypeIndividualMale
Primary Taxonomy207KA0200X
Provider Legal NameDR. RICARDO ANTONIO TANCredential: MD
Location Address1950 SAWTELLE BLVD STE 138Los Angeles, CA 90025-7014
Mailing Address5219 Cedros AveSherman Oaks, CA 91411-4016 · (310) 709-2693 · Fax (661) 266-3766
Phone(310) 966-9022
Fax(310) 966-9042
Sole ProprietorNo
Medical School CMSOtherGraduated 1986
Enumeration DateJuly 24, 2006
Last NPPES UpdateMarch 24, 2017
✔ NPI 1255353629 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAllergy & Immunology · AllergyAllopathic & Osteopathic Physicians
Taxonomy Code207KA0200X
License✔ Licensed in CA · A052236
Definition
A physician who specializes in the diagnosis, treatment, and management of allergies. Source: National Uniform Claim Committee
1950 SAWTELLE BLVD STE 138, Los Angeles, CA 90025
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Other Identifiers 1

Medicare UPINF69103CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Ricardo Antonio Tan 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 ID5395706790
PECOS Enrollment IDI20041019001442
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.

Medicare Billing Reassignments

3

Medicare enrollment records show Ricardo Tan reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Ricardo Antonio Tan MD Inc.
8.6 mi
Allergy & Immunology
5219 CEDROS AVE
Sherman Oaks, CA 91411
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: Ricardo Antonio Tan M D Inc
NPI 1881082683 (310) 709-2693
Houshang Farhadian, MD, Inc
25 mi
Allergy
25425 ORCHARD VILLAGE RD
Santa Clarita, CA 91355
  • Reassigned Medicare billing, California enrollment
  • 2 clinicians in this Medicare group
NPI 1528256823 (661) 259-6996
Oso Specialty Infusion, Inc.
42 mi
Infusion Therapy
17175 GILLETTE AVE STE B
Irvine, CA 92614
  • Reassigned Medicare billing, California enrollment
  • 19 clinicians in this Medicare group
NPI 1700305505 (949) 735-6803

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 5

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.

Test for allergy using allergenic extract 95004
An allergy test with allergenic extract is a diagnostic method to identify substances causing allergic reactions. Small amounts of common allergens are introduced to your body, usually through skin pricks or blood tests. Your body's response helps determine your allergies.
1,384 services15 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
171 services76 patients
Professional service for multiple injections of allergen 95117
The professional service for multiple injections of allergens involves administering small doses of specific allergens into your body. This is done to help your immune system become less sensitive to them, reducing your allergic reaction over time. It's a safe, effective way to manage allergies.
134 services21 patients
Injection of drug or substance under skin or into muscle 96372
This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.
60 services15 patients
Test to measure expiratory airflow and volume 94010
This test, known as spirometry, assesses how well your lungs work. It measures how much air you can inhale, how much you can exhale and how quickly you can exhale. It's non-invasive and helps diagnose conditions like asthma or COPD.
27 services23 patients

Referred Medical Equipment & Supplies CMS DME claims 6

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

Supplies for maintenance of non-insulin drug infusion catheter, per week (list drugs separately) A4221
DME-Other DME · category DE017N
6 suppliers54 claims187 services$18.83 avg. paid by Medicare
Ambulatory infusion pump, mechanical, reusable, for infusion 8 hours or greater E0779
DME-Other DME · category DE000N
3 suppliers14 claims14 services$12.26 avg. paid by Medicare
Injection, immune globulin (cuvitru), 100 mg J1555
Treatment-Injections and Infusions (nononcologic) · category RI008N
2 suppliers24 claims9,620 services$11.72 avg. paid by Medicare
Injection, immune globulin (hizentra), 100 mg J1559
Treatment-Injections and Infusions (nononcologic) · category RI008N
4 suppliers15 claims7,120 services$9.48 avg. paid by Medicare
Noc drugs, other than inhalation drugs, administered through dme J7799
DME-Drugs Administered Through DME · category DG000N
2 suppliers13 claims4,040 services$14.02 avg. paid by Medicare
Supplies for external non-insulin drug infusion pump, syringe type cartridge, sterile, each K0552
DME-Other DME · category DE000N
6 suppliers56 claims195 services$2.39 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Ricardo Tan's NPI number?

The NPI number for Ricardo Tan is 1255353629. It was assigned to this individual provider in the NPPES registry on July 24, 2006.

Where is Ricardo Tan located?

Ricardo Tan practices at 1950 Sawtelle Blvd Ste 138, Los Angeles, CA 90025. The listed phone number is (310) 966-9022.

What is Ricardo Tan's specialty?

The primary specialty registered for this NPI is Allergy & Immunology, specializing in Allergy, with taxonomy code 207KA0200X.

Is Ricardo Tan enrolled in Medicare?

Yes. Ricardo Tan 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.

Which organizations bill Medicare for Ricardo Tan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ricardo Tan reassigns Medicare benefits to 3 organizations: Ricardo Antonio Tan MD Inc. (Sherman Oaks, CA), Houshang Farhadian, MD, Inc (Santa Clarita, CA) and Oso Specialty Infusion, Inc. (Irvine, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Ricardo Tan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Ricardo Tan was last updated on March 24, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.