Dr. Scott A. Irwin, MD

  • West Hollywood, CA
  • Psychiatrist
NPI1225117716PAC ID1355305426
Medicare services, 2024
133
Medicare patients, 2024
31
Part D claims, 2024
260
Publications
82
Clinical trials
3
Practice address
8700 Beverly Blvd, Los Angeles, CA 90048
Practice phone
Call (310) 423-5000
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Cedars-Sinai Medical Center

Hospital · Los Angeles, California

See all 10 affiliations

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Dr. Scott A. Irwin is a psychiatrist in West Hollywood, California

Dr. Irwin practices at Cedars-Sinai Medical Center in Los Angeles, California, part of Cedars-Sinai Health System.

Dr. Irwin's NPI, 1225117716, was assigned on November 3, 2006. Dr. Irwin graduated from University of Illinois College of Medicine - Chicago in 2002. Dr. Irwin holds California license A84936.

NPI and contact details
Medicare PAC ID
1355305426
NPI enumeration date
November 3, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(310) 423-5000
Professional email
Get email
Personal email
Get email
Mobile number
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Sex
Male
Estimated age
50
Medical school graduation
2002

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

Dr. Scott A. Irwin practices at Cedars-Sinai Medical Center in Los Angeles, California

Dr. Irwin's primary practice is Cedars-Sinai Medical Center, at 8700 Beverly Blvd, Los Angeles, CA 90048 in Los Angeles County. The practice phone is (310) 423-5000.

Source: Dmand AI Affiliation Data

Dr. Scott A. Irwin is affiliated with 3 sites of care and 7 medical groups

Dr. Irwin's primary practice is Cedars-Sinai Medical Center in Los Angeles, California, part of Cedars-Sinai Health System. The medical group on file is Cedars-Sinai Medical Center. Dmand AI also links Dr. Irwin to 6 more medical groups and 2 group practices and clinics, each named with a free account.

See all 10 affiliations for Dr. Irwin

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Scott A. Irwin's practice

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

EHR by site
SiteEHR vendor and product
Cedars-Sinai Medical CenterAvailable with a free account
+2 more sites and 6 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Dr. Scott A. Irwin is one of 6,803 psychiatrists in California

Psychiatry is Dr. Irwin's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Irwin is board certified in consultation-liaison psychiatry by the American Board of Psychiatry and Neurology. Dr. Irwin is licensed in California.

Specialties and state licenses

  • Psychiatry, CaliforniaPrimaryLicense A84936 · 2003 to 2027 · taxonomy 2084P0800X

Clinical focus

Dmand AI lists adjustment disease, anxiety, depression and insomnia among the conditions Dr. Irwin treats.

Psychiatrists near Dr. Irwin

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

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

Dr. Scott A. Irwin billed Medicare for 133 services in 2024

CMS data shows 133 Medicare services from Dr. Irwin across 2 procedure codes in 2024, for 31 Medicare patients. Medicare paid $11,058 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024133
Medicare patients31
Paid by Medicare$11,058
Procedure codes2

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

  • 2023
  • 2024
Office and hospital visits
2023: 1032024: 12218%
Tests and treatments
2023: 192024: 1142%

Dr. Irwin compared with the California median for psychiatrists, 2024

  • Dr. Irwin
  • California median
Medicare services
133vs 11912% above
Medicare patients
31vs 4124% below
Part D claims
215vs 14449% above

Medians across 6,809 psychiatrists in California with Dmand AI profiles that report each measure.

Dr. Irwin'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. Irwin

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

Dr. Scott A. Irwin treated 31 Medicare patients in 2024, average age 71

CMS counts 31 Medicare patients who saw Dr. Irwin in 2024. The largest group is 65 to 74, with 14 patients. 75% of them have anxiety, and 75% have cancer. Their average risk score is 2.37, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Irwin's median patient age at 67, with 57% women.

Medicare patients, 202431
Average age71
Average risk score2.37

Dr. Irwin's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Irwin's Medicare patients by sex, 2024

  • Women2065%
  • Men1135%

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

  1. Anxiety75%
  2. Cancer75%
  3. Depression75%
  4. High cholesterol75%
  5. Mood disorders75%
  6. High blood pressure71%
  7. Arthritis61%
  8. Diabetes45%

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

Dr. Irwin's patients across all payers

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

Patient panel by age, all payers

Median age 67

Patient panel by sex, all payers

  • Women57%
  • Men43%

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

Dr. Scott A. Irwin wrote 260 Medicare Part D claims in 2024

In 2024, Dr. Irwin wrote 260 Medicare Part D claims for 25 patients. 98% of them were for generic drugs. CMS names the drug for 215 of them, across 10 drugs with 11 or more claims each, at $3,403 in total drug cost. In 2023, CMS named 102 claims across 5 drugs.

Part D claims, 2024260
Drugs named by CMS10
Total drug cost$3,403
Part D patients25

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

  • Generic254 claims98%
  • Brand-name and other6 claims2%

Dr. Irwin's most prescribed drugs by claims, 2024

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, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 1022024: 215111%

Drugs named by CMS: 10 in 2024, 5 in 2023.

See all prescribing by Dr. Irwin

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. Scott A. Irwin scored 93 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 93 out of 100 for Dr. Irwin for performance year 2024, reported as part of a group. Dr. Irwin accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Irwin as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Irwin's MIPS scores, performance year 2024

  • 93of 100Final score
  • 77.8of 100Quality
  • 98of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 71of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

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Dr. Scott A. Irwin has 82 publications on record

Dmand AI links 82 papers to Dr. Irwin, published from 2008 to 2021. 2013 was the busiest year, with 7. The most frequent topics are Palliative Care, Hospice Care and California. Dr. Irwin has published most often in J Palliat Med. Dr. Irwin's most frequent co-authors are Jeremy Mason Hirst, MD, Nathan P. Fairman, MD and Dilip V. Jeste, MD.

Papers82
Years published2008 to 2021

Dr. Irwin's papers by year, 2012 to 2021

Topics Dr. Irwin writes about most

  • Palliative Care
  • Hospice Care
  • California
  • Depression
  • Psychiatry
  • Psychotherapy
  • Dendrites
  • Fragile X Syndrome

Dr. Irwin's most frequent co-authors

Recent publications by Dr. Irwin

See all 82 publications and co-authors

See who Dr. Irwin researches with

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

How network discovery works

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

Dr. Scott A. Irwin has worked on 3 clinical trials

Dmand AI links Dr. Irwin to 3 clinical trials, 2 of them early phase 1 studies. 1 is still active or recruiting. Conditions studied include Depression, Visceral Pain and Behavioral Symptoms. Cedars-Sinai Medical Center sponsors the most, 2.

Conditions in Dr. Irwin's trials

  • Depression
  • Visceral Pain
  • Behavioral Symptoms
  • Nociceptive Pain
  • Pancreatic Neoplasms

Investigators on the most trials with Dr. Irwin

Recent clinical trials with Dr. Irwin

Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)

Dr. Scott A. Irwin received $287 in industry payments from 2018 to 2020

CMS Open Payments shows 12 general payments to Dr. Irwin from 3 drug and device companies from 2018 to 2020. Food and beverage make up the largest share, 100% of the total. Sunovion Pharmaceuticals Inc. paid the most, $158.

General payments to Dr. Irwin by program year, 2018 to 2020

Companies that paid Dr. Irwin the most, 2018 to 2020

Share is of all general payments to this clinician.

See all payments to Dr. Irwin

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

Dr. Scott A. Irwin has 18 awards and honors on record

Dmand AI lists 18 awards for Dr. Irwin, most recently Scholar in 2014.

Awards and honors for Dr. Irwin

  1. 2014
    • Scholar
  2. 2011
    • Visiting Professorship Program Award
  3. 2010
    • Health Hero Award
    • Honoree, Health Care Champion Awards for Innovation and Research
    • Physicians of Exceptional Excellence in the Field of Psychiatry, 2014 Top Doctor
    • Service Award
See all 18 awards

Source: Dmand AI Professional Profile Data

Dr. Scott A. Irwin graduated from University of Illinois College of Medicine - Chicago

Dr. Irwin graduated from University of Illinois College of Medicine - Chicago in 2002.

  1. Medical schoolUniversity of Illinois College of Medicine - Chicago
  2. Board certified in consultation-liaison psychiatryAmerican Board of Psychiatry and Neurology
  3. Board certified in psychiatryAmerican Board of Psychiatry and Neurology

Source: Dmand AI Professional Profile Data

Dr. Scott A. Irwin accepts plans from 9 insurance carriers

Dr. Irwin is in network with 9 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.

  • Aetna
  • Elevance
  • Blue Cross Blue Shield of Michigan
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • Humana
  • Regence Health Plans
  • CMS Medicare
  • +1 more carriersWith a free account

Plan types Dr. Irwin accepts, by number of carriers

  1. Medicare9
  2. PPO7
  3. HMO3
  4. POS3
  5. EPO2

Source: Dmand AI Insurance Network Data

Sources for Dr. Scott A. Irwin'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 phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy 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)Clinician Public Reporting: Overall MIPS Performance (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. Scott A. Irwin

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. Scott A. Irwin's NPI number?

Dr. Scott A. Irwin's NPI number is 1225117716. It was assigned on November 3, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Scott A. Irwin?

Dr. Scott A. Irwin is a psychiatrist in West Hollywood, California. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).

Where does Dr. Scott A. Irwin practice?

Dr. Irwin practices at 8700 Beverly Blvd, Los Angeles, CA 90048. Dr. Irwin's primary practice is Cedars-Sinai Medical Center in Los Angeles, California, part of Cedars-Sinai Health System. Dmand AI also links Dr. Irwin to 6 medical groups and 2 group practices and clinics.

What is Dr. Scott A. Irwin's office phone number?

The practice phone on file for Dr. Irwin is (310) 423-5000.

What is Dr. Scott A. Irwin's medical license number?

Dr. Irwin holds California license A84936.

Which hospitals is Dr. Scott A. Irwin affiliated with?

Dr. Irwin practices at Cedars-Sinai Medical Center in Los Angeles, California.

What medical group is Dr. Scott A. Irwin part of?

Dr. Irwin is linked to Cedars-Sinai Medical Center. Dmand AI links Dr. Irwin to 6 more medical groups.

Does Dr. Scott A. Irwin accept Medicare?

Yes. CMS data shows Dr. Irwin billed Medicare for 133 services in 2024, and Dr. Irwin accepts Medicare assignment.

Does Dr. Scott A. Irwin offer telehealth?

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

What is Dr. Scott A. Irwin's MIPS score?

Dr. Irwin's MIPS final score for performance year 2024 is 93 out of 100, reported as part of a group.

Show 10 more questionsShow fewer questions

How many Medicare patients does Dr. Scott A. Irwin see?

CMS counts 31 Medicare patients who saw Dr. Irwin in 2024, with an average age of 71.

Is Dr. Scott A. Irwin board certified?

Yes. Dr. Irwin is board certified in consultation-liaison psychiatry by the American Board of Psychiatry and Neurology.

What services does Dr. Scott A. Irwin bill to Medicare?

In 2024, Dr. Irwin's most billed Medicare services were office visit, established patient (99214) and psychiatric service (90792).

Where did Dr. Scott A. Irwin go to medical school?

Dr. Irwin graduated from University of Illinois College of Medicine - Chicago in 2002.

What drugs does Dr. Scott A. Irwin prescribe most?

In 2024 Medicare Part D data, Dr. Irwin's most prescribed drugs by claims were Clonazepam, Lorazepam and Venlafaxine HCl ER.

Has Dr. Scott A. Irwin received payments from drug or device companies?

CMS Open Payments shows $287 in general payments to Dr. Irwin from 3 companies from 2018 to 2020. The largest total came from Sunovion Pharmaceuticals Inc.

How long has Dr. Scott A. Irwin been practicing?

Dr. Irwin graduated from medical school in 2002, 24 years ago.

Does Dr. Scott A. Irwin do research?

Dmand AI links 82 publications to Dr. Irwin, published from 2008 to 2021. Dr. Irwin has worked on 3 clinical trials.

Who does Dr. Scott A. Irwin publish with?

Dr. Irwin's most frequent co-authors are Jeremy Mason Hirst, MD (6 shared papers), Nathan P. Fairman, MD (5 shared papers) and Dilip V. Jeste, MD (3 shared papers).

What insurance does Dr. Scott A. Irwin accept?

Dr. Irwin is in network with 9 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.

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