Dr. Raffi Tachdjian, MD

  • Santa Monica, CA
  • Allergist and immunologist
NPI1447376454PAC ID2163529926
Medicare services, 2024
13,386
Medicare patients, 2024
194
Part D claims, 2024
81
Publications
39
Clinical trials
6
Practice address
1301 20th St, Santa Monica, CA 90404
Practice phone
Call (310) 453-2733
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Pacific Coast Plastic Surgery Center, Inc

Santa Monica, California

See all 5 affiliations

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Dr. Raffi Tachdjian is an allergist and immunologist in Santa Monica, California

Dr. Tachdjian practices at Pacific Coast Plastic Surgery Center, Inc in Santa Monica, California.

Dr. Tachdjian's NPI, 1447376454, was assigned on March 21, 2007. Dr. Tachdjian graduated from Morehouse School Of Medicine in 2001. Dr. Tachdjian holds California license A88034.

NPI and contact details
Medicare PAC ID
2163529926
NPI enumeration date
March 21, 2007
NPI status
Active
Offers telehealth
Yes
Practice phone
(310) 453-2733
Professional email
Get email
Personal email
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Mobile number
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Sex
Male
Estimated age
51
Medical school graduation
2001

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Raffi Tachdjian practices at Pacific Coast Plastic Surgery Center, Inc in Santa Monica, California

Dr. Tachdjian's primary practice is Pacific Coast Plastic Surgery Center, Inc, at 1301 20th St, Santa Monica, CA 90404 in Los Angeles County. The practice phone is (310) 453-2733.

  • Pacific Coast Plastic Surgery Center, Inc
    1301 20th St, Santa Monica, CA 90404 · Los Angeles CountyPhone(310) 453-2733

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. Raffi Tachdjian is affiliated with 4 sites of care and 1 medical group

Dr. Tachdjian's primary practice is Pacific Coast Plastic Surgery Center, Inc in Santa Monica, California. The medical group on file is UCLA Health. Dmand AI also links Dr. Tachdjian to 1 more physician office, 1 group practice or clinic and 1 home health agency, each named with a free account.

See all 5 affiliations for Dr. Tachdjian

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Dr. Raffi Tachdjian's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tachdjian practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Pacific Coast Plastic Surgery Center, IncAvailable with a free account
+3 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Raffi Tachdjian is one of 386 allergists and immunologists in California

Allergy and immunology is Dr. Tachdjian's primary specialty in the NPI Registry, under taxonomy code 207K00000X. Dr. Tachdjian is board certified in allergy & immunology by the American Board of Allergy and Immunology. Dr. Tachdjian is licensed in California.

Specialties and state licenses

  • Allergy and immunology, CaliforniaPrimaryLicense A88034 · 2004 to 2026 · taxonomy 207K00000X

Clinical focus

Dmand AI lists acute sinusitis, asthma, chronic nasal allergies, chronic sinusitis, hives and immune deficiency disease among the conditions Dr. Tachdjian treats.

Allergists and immunologists near Dr. Tachdjian

Counts of allergists and immunologists with a Dmand AI profile, by place and practice. Each opens the list.

386allergists and immunologists in California
7allergists and immunologists in Santa Monica

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Raffi Tachdjian billed Medicare for 13,386 services in 2024

CMS data shows 13,386 Medicare services from Dr. Tachdjian across 11 procedure codes in 2024, for 194 Medicare patients. Medicare paid $133,699 for them. Every service was in an office.

Medicare services, 202413,386
Medicare patients194
Paid by Medicare$133,699
Procedure codes11

Dr. Tachdjian's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Tests and treatments
2023: 10,7702024: 12,56017%
Office and hospital visits
2023: 8732024: 74814%
Other services
2023: 02024: 78

Dr. Tachdjian compared with the California median for allergists and immunologists, 2024

  • Dr. Tachdjian
  • California median
Medicare services
13,386vs 1,8407.3 times
Medicare patients
194vs 14534% above
Part D claims
29vs 25989% below

Medians across 368 allergists and immunologists in California with Dmand AI profiles that report each measure.

Dr. Tachdjian's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Tachdjian

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Raffi Tachdjian treated 194 Medicare patients in 2024, average age 74

CMS counts 194 Medicare patients who saw Dr. Tachdjian in 2024. The largest group is 65 to 74, with 90 patients. 75% of them have high cholesterol, and 58% have arthritis. 7% are also on Medicaid. Their average risk score is 1.17, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Tachdjian's median patient age at 37, with 57% women.

Medicare patients, 2024194
Average age74
Average risk score1.17
Also on Medicaid7%

Dr. Tachdjian's Medicare patients by age, 2024

Dr. Tachdjian's Medicare patients by sex, 2024

  • Women13067%
  • Men6433%

Chronic conditions among Dr. Tachdjian's Medicare patients, 2024

  1. High cholesterol75%
  2. Arthritis58%
  3. High blood pressure57%
  4. Ischemic heart disease38%
  5. Osteoporosis36%
  6. Asthma34%
  7. Mood disorders26%
  8. Anxiety24%

Share of Medicare patients with each condition. A patient can have several.

Dr. Tachdjian's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 37

Patient panel by sex, all payers

  • Women57%
  • Men40%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Raffi Tachdjian wrote 81 Medicare Part D claims in 2024

In 2024, Dr. Tachdjian wrote 81 Medicare Part D claims for 44 patients. 48% of them were for generic drugs. CMS names the drug for 29 of them, across 2 drugs with 11 or more claims each, at $768 in total drug cost. In 2022, CMS named 107 claims across 7 drugs.

Part D claims, 202481
Drugs named by CMS2
Total drug cost$768
Part D patients44

Dr. Tachdjian's Part D claims by kind of drug, 2024

  • Generic39 claims48%
  • Brand-name42 claims52%

Dr. Tachdjian's most prescribed drugs by claims, 2023

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Part D claims for drugs CMS names, 2022 to 2023

  • 2022
  • 2023
Claims for drugs CMS names
2022: 1072023: 2973%

Drugs named by CMS: 2 in 2023, 7 in 2022.

See all prescribing by Dr. Tachdjian

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Dr. Raffi Tachdjian offers telehealth to Medicare patients

CMS lists Dr. Tachdjian as offering telehealth.

Offers telehealth
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Dr. Raffi Tachdjian has 39 publications on record

Dmand AI links 39 papers to Dr. Tachdjian, published from 2009 to 2025. 2023 was the busiest year, with 6. The most frequent topics are Angioedemas, Hereditary, Complement C1 Inhibitor Protein and Double-Blind Method. Dr. Tachdjian has published most often in Allergy Asthma Proc. Dr. Tachdjian's most frequent co-authors are Timothy J. Craig, DO, William Raymond Lumry, MD and Marc Andrew Riedl, MD.

Papers39
Years published2009 to 2025

Dr. Tachdjian's papers by year, 2013 to 2025

Topics Dr. Tachdjian writes about most

  • Angioedemas, Hereditary
  • Complement C1 Inhibitor Protein
  • Double-Blind Method
  • Antibodies, Monoclonal, Humanized
  • Peptides
  • Injections, Subcutaneous
  • Antibodies, Monoclonal
  • Antifibrinolytic Agents

Dr. Tachdjian's most frequent co-authors

Recent publications by Dr. Tachdjian

See all 39 publications and co-authors

See who Dr. Tachdjian researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Tachdjian works with, so you can find a warm path to the right allergists and immunologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Raffi Tachdjian has worked on 6 clinical trials

Dmand AI links Dr. Tachdjian to 6 clinical trials. Conditions studied include Hereditary Complement Deficiency Diseases, Angioedemas, Hereditary and Angioedema. Shire sponsors the most, 4. Open Payments lists research payments to Dr. Tachdjian that name 6 trials.

Conditions in Dr. Tachdjian's trials

  • Hereditary Complement Deficiency Diseases
  • Angioedemas, Hereditary
  • Angioedema
  • Primary Immunodeficiency Diseases
  • Immunologic Deficiency Syndromes

Investigators on the most trials with Dr. Tachdjian

Recent clinical trials with Dr. Tachdjian

See all 6 clinical trials and co-investigators

Sources: Open Payments (CMS), 2025 data, released July 7, 2026; Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)

Dr. Raffi Tachdjian received $4,803,341 in industry payments from 2016 to 2025

CMS Open Payments shows 5,440 general payments to Dr. Tachdjian from 49 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 58% of the total. CSL Behring paid the most, $801,538. It also lists 51 research payments totaling $96,350 from 2021 to 2025, naming 6 clinical trials.

General payments to Dr. Tachdjian by program year, 2016 to 2025

General payments to Dr. Tachdjian by kind, 2016 to 2025

$4.8Min total
  • Speaker and faculty fees$2,757,13058%
  • Consulting fees$598,24813%
  • Travel and lodging$591,16712%
  • Honoraria$499,94510%
  • Other$334,8517%

Companies that paid Dr. Tachdjian the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Tachdjian

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Raffi Tachdjian has 2 awards and honors on record

Dmand AI lists 2 awards for Dr. Tachdjian, most recently CMS Stage 1 EHR in 2013. Dr. Tachdjian serves on UCLA Pediatrics Committee.

Awards and honors for Dr. Tachdjian

  1. 2013
    • CMS Stage 1 EHR
  2. 2011
    • Compassionate Doctors

Dr. Tachdjian's committees and leadership roles

UCLA Pediatrics CommitteeMember
2011 to present

Source: Dmand AI Professional Profile Data

Dr. Raffi Tachdjian graduated from Morehouse School Of Medicine

Dr. Tachdjian graduated from Morehouse School Of Medicine in 2001. Dr. Tachdjian is a member of AAAAI and American College of Asthma Allergy and Immunology.

  1. Medical schoolMorehouse School Of Medicine
  2. Board certified in allergy & immunologyAmerican Board of Allergy and Immunology

Source: Dmand AI Professional Profile Data

Dr. Raffi Tachdjian accepts plans from 18 insurance carriers

Dr. Tachdjian is in network with 18 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. Medicare plans come from the most carriers, 12. Check the plan with the practice before a visit.

Plan types Dr. Tachdjian accepts, by number of carriers

  1. Medicare12
  2. PPO11
  3. HMO9
  4. POS6
  5. EPO5
  6. Medicaid1

Source: Dmand AI Insurance Network Data

Sources for Dr. Raffi Tachdjian's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Clinical trials and co-investigatorsDmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Raffi Tachdjian

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Raffi Tachdjian's NPI number?

Dr. Raffi Tachdjian's NPI number is 1447376454. It was assigned on March 21, 2007, and it is active in the NPI Registry.

What kind of doctor is Dr. Raffi Tachdjian?

Dr. Raffi Tachdjian is an allergist and immunologist in Santa Monica, California. The primary specialty in the NPI Registry is Allergy & Immunology Physician (taxonomy code 207K00000X).

Where does Dr. Raffi Tachdjian practice?

Dr. Tachdjian practices at 1301 20th St, Santa Monica, CA 90404. Dr. Tachdjian's primary practice is Pacific Coast Plastic Surgery Center, Inc in Santa Monica, California. Dmand AI also links Dr. Tachdjian to 1 physician office, 1 group practice or clinic and 1 home health agency.

What is Dr. Raffi Tachdjian's office phone number?

The practice phone on file for Dr. Tachdjian is (310) 453-2733.

What is Dr. Raffi Tachdjian's medical license number?

Dr. Tachdjian holds California license A88034.

What medical group is Dr. Raffi Tachdjian part of?

Dr. Tachdjian is linked to UCLA Health.

Does Dr. Raffi Tachdjian accept Medicare?

Yes. CMS data shows Dr. Tachdjian billed Medicare for 13,386 services in 2024.

Does Dr. Raffi Tachdjian offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Tachdjian as offering telehealth services.

How many Medicare patients does Dr. Raffi Tachdjian see?

CMS counts 194 Medicare patients who saw Dr. Tachdjian in 2024, with an average age of 74.

Is Dr. Raffi Tachdjian board certified?

Yes. Dr. Tachdjian is board certified in allergy & immunology by the American Board of Allergy and Immunology.

Show 8 more questionsShow fewer questions

What services does Dr. Raffi Tachdjian bill to Medicare?

In 2024, Dr. Tachdjian's most billed Medicare services were allergy test or treatment (95004), allergy test or treatment (95165) and allergy test or treatment (95024).

Where did Dr. Raffi Tachdjian go to medical school?

Dr. Tachdjian graduated from Morehouse School Of Medicine in 2001.

What drugs does Dr. Raffi Tachdjian prescribe most?

In 2023 Medicare Part D data, Dr. Tachdjian's most prescribed drugs by claims were Ipratropium Bromide and Sodium Chloride.

Has Dr. Raffi Tachdjian received payments from drug or device companies?

CMS Open Payments shows $4,803,341 in general payments to Dr. Tachdjian from 49 companies from 2016 to 2025. The largest total came from CSL Behring.

How long has Dr. Raffi Tachdjian been practicing?

Dr. Tachdjian graduated from medical school in 2001, 25 years ago.

Does Dr. Raffi Tachdjian do research?

Dmand AI links 39 publications to Dr. Tachdjian, published from 2009 to 2025. Dr. Tachdjian has worked on 6 clinical trials.

Who does Dr. Raffi Tachdjian publish with?

Dr. Tachdjian's most frequent co-authors are Timothy J. Craig, DO (12 shared papers), William Raymond Lumry, MD (11 shared papers) and Marc Andrew Riedl, MD (10 shared papers).

What insurance does Dr. Raffi Tachdjian accept?

Dr. Tachdjian is in network with 18 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. Medicare plans come from the most carriers, 12. Check the plan with the practice before a visit.

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