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DR. RAFFI TACHDJIAN M.D.
NPI 1447376454
Allergy & Immunology in Santa Monica, CA

Active since March 21, 2007PECOS Enrolled
1301 20TH ST STE 380, SANTA MONICA, CA 90404(310) 998-0060(310) 998-0063 Get Directions Write a Review

NPPES record last updated: July 2, 2018. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Raffi Tachdjian M.d. NPPES

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

DR. RAFFI TACHDJIAN M.D. (NPI 1447376454) is an individual allergy & immunology provider in Santa Monica, California, licensed in California (A88034) and active in the NPI registry since March 2007. He is enrolled in Medicare PECOS and is a graduate of Morehouse School Of Medicine (2001).

NPPES Registry Identity

NPI1447376454
Entity TypeIndividualMale
Primary Taxonomy207K00000X
Provider Legal NameDR. RAFFI TACHDJIANCredential: M.D.
Location Address1301 20TH ST STE 380Santa Monica, CA 90404
Mailing Address1301 20th St Ste 380Santa Monica, CA 90404-2087 · (310) 998-0060 · Fax (109) 980-0633
Phone(310) 998-0060
Fax(310) 998-0063
Sole ProprietorNo
Medical School CMSMorehouse School Of MedicineGraduated 2001
Enumeration DateMarch 21, 2007
Last NPPES UpdateJuly 2, 2018
✔ NPI 1447376454 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAllergy & ImmunologyAllopathic & Osteopathic Physicians
Taxonomy Code207K00000X
License✔ Licensed in CA · A88034
Definition
An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system.
Also ListedPediatrics · Pediatric Allergy/ImmunologyTaxonomy 2080P0201X · License A88034 (CA)
1301 20TH ST STE 380, Santa Monica, CA 90404
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Raffi Tachdjian M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID2163529926
PECOS Enrollment IDI20070514000329
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

2

Medicare enrollment records show Raffi Tachdjian reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Raffi Tachdjian, MD A Medical Corporation
Same address
Allergy
1301 20TH ST STE 380
Santa Monica, CA 90404
  • Reassigned Medicare billing, California enrollment
NPI 1346647120 (310) 998-0060
Uc Regents
3.1 mi
Pediatrics
200 UCLA MEDICAL PLAZA, SUITE 265
Los Angeles, CA 90095
  • Reassigned Medicare billing, California enrollment
  • 323 clinicians in this Medicare group
NPI 1982667663 (310) 825-0867

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 10

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.
8,544 services74 patients
Professional service for preparation and provision of 1 or more antigens 95165
This service involves the creation and supply of antigens, substances that stimulate your immune system to fight diseases. These antigens can be used in vaccines or allergy tests to help your body build defenses against specific health threats.
2,200 services37 patients
Test for allergy using allergenic extract injected into skin 95024
An allergy skin test involves injecting a small amount of allergenic extract into your skin. This test helps determine if you're allergic to specific substances. If allergic, a small red bump appears at the test site. It's safe and quick.
1,214 services44 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.
328 services27 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
318 services163 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
301 services31 patients

Referred Medical Equipment & Supplies CMS DME claims 9

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 suppliers120 claims338 services$18.29 avg. paid by Medicare
Ambulatory infusion pump, mechanical, reusable, for infusion 8 hours or greater E0779
DME-Other DME · category DE000N
4 suppliers18 claims18 services$12.23 avg. paid by Medicare
Injection, immune globulin (cuvitru), 100 mg J1555
Treatment-Injections and Infusions (nononcologic) · category RI008N
3 suppliers44 claims14,500 services$11.70 avg. paid by Medicare
Injection, immune globulin (xembify), 100 mg J1558
Treatment-Injections and Infusions (nononcologic) · category RI008N
1 supplier24 claims9,600 services$10.68 avg. paid by Medicare
Injection, immune globulin (hizentra), 100 mg J1559
Treatment-Injections and Infusions (nononcologic) · category RI008N
4 suppliers58 claims23,940 services$9.57 avg. paid by Medicare
Injection, immune globulin, (gammagard liquid), non-lyophilized, (e.g., liquid), 500 mg J1569
Treatment-Injections and Infusions (nononcologic) · category RI008N
6 suppliers31 claims3,750 services$35.66 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

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

RAFFI TACHDJIAN, MD A MEDICAL CORPORATION
Allergy & Immunology (Allergy)
1301 20TH ST STE 380
SANTA MONICA, CA 90404
Los Angeles County (310) 998-0060

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 Raffi Tachdjian's NPI number?

The NPI number for Raffi Tachdjian is 1447376454. It was assigned to this individual provider in the NPPES registry on March 21, 2007.

Where is Raffi Tachdjian located?

Raffi Tachdjian practices at 1301 20th St Ste 380, Santa Monica, CA 90404. The listed phone number is (310) 998-0060.

What is Raffi Tachdjian's specialty?

The primary specialty registered for this NPI is Allergy & Immunology with taxonomy code 207K00000X.

Is Raffi Tachdjian enrolled in Medicare?

Yes. Raffi Tachdjian is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Raffi Tachdjian's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Raffi Tachdjian reassigns Medicare benefits to 2 organizations: Raffi Tachdjian, MD A Medical Corporation (Santa Monica, CA) and Uc Regents (Los Angeles, 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 Raffi Tachdjian'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 Raffi Tachdjian was last updated on July 2, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.