Dr. Gary E. Schwartz, MD
- Medicare services, 2022
- 877
- Part D claims, 2024
- 28
- Publications
- 210
- Industry payments
- $1,259
- Affiliated sites
- 1
- Practice address
- 9201 W Sunset Blvd, West Hollywood, CA 90069
- Practice phone
- Call (310) 623-1222
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
James R Berenson, M.d., INC
Primary care practice · West Hollywood, California
Find Dr. Schwartz's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Gary E. Schwartz is a hematologist and oncologist in Ventura, California
Dr. Schwartz practices at James R Berenson, M.d., INC in West Hollywood, California.
Dr. Schwartz's NPI, 1558438481, was assigned on November 29, 2006. Dr. Schwartz graduated from UCSF School of Medicine in 1983. Dr. Schwartz holds California license G54727.
- NPI
- 1558438481NPI Registry (opens in a new tab)
- NPI enumeration date
- November 29, 2006
- NPI status
- Active
- Practice phone
- (310) 623-1222
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 69
- Medical school graduation
- 1983
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gary E. Schwartz practices in West Hollywood and Ventura
Dr. Schwartz's primary practice is James R Berenson, M.d., INC, at 9201 W Sunset Blvd, West Hollywood, CA 90069. The practice phone is (310) 623-1222. The NPI Registry lists Dr. Schwartz's practice address as 147 N Brent St, Ventura, CA 93003.
- James R Berenson, M.d., INCPrimary9201 W Sunset Blvd, West Hollywood, CA 90069Phone(310) 623-1222
- NPI Registry address147 N Brent St, Ventura, CA 93003 · Ventura CountyPhone(818) 719-2000
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Gary E. Schwartz is affiliated with 1 site of care and 1 medical group
Dr. Schwartz's primary practice is James R Berenson, M.d., INC in West Hollywood, California. The medical group on file is Berenson Cancer Center.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Gary E. Schwartz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Schwartz practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| James R Berenson, M.d., INC | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Gary E. Schwartz is one of 1,502 hematologists and oncologists in California
Hematology and oncology is Dr. Schwartz's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Schwartz is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Schwartz's licenses on file in 2 states: California and New York.
Specialties and state licenses
- Hematology and oncology, CaliforniaPrimary
- New York license
Hematologists and oncologists near Dr. Schwartz
Counts of hematologists and oncologists 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. Gary E. Schwartz billed Medicare for 877 services in 2022
CMS data shows 877 Medicare services from Dr. Schwartz across 8 procedure codes in 2022. Medicare paid $7,992 for them. Every service was in an office.
Dr. Schwartz's Medicare services by type, 2018 to 2022
- 2018
- 2022
- Drugs given in the office
- 2018: 1,5452022: 76650%
- Lab and pathology
- 2018: 1472022: 5563%
- Tests and treatments
- 2018: 882022: 4055%
- Office and hospital visits
- 2018: 262022: 1638%
- Surgery
- 2018: 152022: 0100%
Dr. Schwartz compared with the California median for hematologists and oncologists, 2022
- Dr. Schwartz
- California median
- Medicare services
- 877vs 9326% below
- Part D claims
- 13vs 39497% below
Medians across 1,367 hematologists and oncologists in California with Dmand AI profiles that report each measure.
Dr. Schwartz's most billed Medicare procedure codes, 2022
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Schwartz?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Schwartz and other hematologists and oncologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gary E. Schwartz's patients have a median age of 69
Across all payers, Dmand AI patient panel data puts Dr. Schwartz's median patient age at 69, with 30% women.
Dr. Schwartz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women30%
- Men70%
Source: Dmand AI Patient Panel Data
Dr. Gary E. Schwartz wrote 28 Medicare Part D claims in 2024
In 2024, Dr. Schwartz wrote 28 Medicare Part D claims. 86% of them were for generic drugs. CMS names the drug for 13 of them, across 1 drug with 11 or more claims each, at $161 in total drug cost. In 2022, CMS named 14 claims across 1 drug.
Dr. Schwartz's Part D claims by kind of drug, 2024
- Generic24 claims86%
- Brand-name and other4 claims14%
Dr. Schwartz'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: 142023: 137%
Drugs named by CMS: 1 in 2023, 1 in 2022.
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
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Gary E. Schwartz has 210 publications on record
Dmand AI links 210 papers to Dr. Schwartz, published from 2006 to 2025. 2013 was the busiest year, with 2. The most frequent topics are Electroencephalography, Arousal and Emotions. Dr. Schwartz has published most often in J Altern Complement Med. Dr. Schwartz's most frequent co-authors are James Richard Berenson, MD, David P. Kelsen, MD and Nancy G. Klimas, MD.
Dr. Schwartz's papers by year, 2008 to 2025
Topics Dr. Schwartz writes about most
- Electroencephalography
- Arousal
- Emotions
- Double-Blind Method
- Psychiatric Status Rating Scales
- Heart Rate
- Stress, Psychological
- Blood Pressure
Dr. Schwartz's most frequent co-authors
- James Richard Berenson, MD3 shared papers
- David P. Kelsen, MD2 shared papers
- Nancy G. Klimas, MD2 shared papers
Recent publications by Dr. Schwartz
See who Dr. Schwartz researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Schwartz works with, so you can find a warm path to the right hematologists and oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Gary E. Schwartz received $1,259 in industry payments from 2018 to 2022
CMS Open Payments shows 44 general payments to Dr. Schwartz from 10 drug and device companies from 2018 to 2022. Food and beverage make up the largest share, 90% of the total. Janssen Pharmaceuticals, Inc paid the most, $433.
General payments to Dr. Schwartz by program year, 2018 to 2022
General payments to Dr. Schwartz by kind, 2018 to 2022
- Food and beverage$1,13790%
- Education$12210%
Companies that paid Dr. Schwartz the most, 2018 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gary E. Schwartz has 3 awards and honors on record
Dmand AI lists 3 awards for Dr. Schwartz, most recently Fellow of the American Society of Clinical Oncology in 2018.
Awards and honors for Dr. Schwartz
- 2018
- Fellow of the American Society of Clinical Oncology
- 2011
- CMS Stage 1 2012
- Undated
- Whos Who
Source: Dmand AI Professional Profile Data
Dr. Gary E. Schwartz graduated from UCSF School of Medicine
Dr. Schwartz graduated from UCSF School of Medicine in 1983.
- Medical school
- Board certified in internal medicine
- Board certified in medical oncology
Source: Dmand AI Professional Profile Data
Sources for Dr. Gary E. Schwartz's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Gary E. Schwartz
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. Gary E. Schwartz's NPI number?
Dr. Gary E. Schwartz's NPI number is 1558438481. It was assigned on November 29, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gary E. Schwartz?
Dr. Gary E. Schwartz is a hematologist and oncologist in Ventura, California. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Gary E. Schwartz practice?
Dr. Schwartz practices at 9201 W Sunset Blvd, West Hollywood, CA 90069. Dr. Schwartz also practices at 147 N Brent St, Ventura, CA 93003. Dr. Schwartz's primary practice is James R Berenson, M.d., INC in West Hollywood, California.
What is Dr. Gary E. Schwartz's office phone number?
The practice phone on file for Dr. Schwartz is (310) 623-1222.
What is Dr. Gary E. Schwartz's medical license number?
Dr. Schwartz holds California license G54727, one of the licenses on file in 2 states.
Which states has Dr. Gary E. Schwartz been licensed in?
Dmand AI has state licenses on file for Dr. Schwartz in California (1985 to 2026) and New York (2010 to 2020).
What medical group is Dr. Gary E. Schwartz part of?
Dr. Schwartz is linked to Berenson Cancer Center.
Does Dr. Gary E. Schwartz accept Medicare?
Yes. CMS data shows Dr. Schwartz billed Medicare for 877 services in 2022.
Is Dr. Gary E. Schwartz board certified?
Yes. Dr. Schwartz is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Gary E. Schwartz bill to Medicare?
In 2022, Dr. Schwartz's most billed Medicare services were injected or infused drug (J9044), injected or infused drug (J1100) and infusion or chemotherapy administration (96367).
Show 6 more questionsShow fewer questions
Where did Dr. Gary E. Schwartz go to medical school?
Dr. Schwartz graduated from UCSF School of Medicine in 1983.
What drugs does Dr. Gary E. Schwartz prescribe most?
In 2023 Medicare Part D data, Dr. Schwartz's most prescribed drugs by claims were Potassium Chloride.
Has Dr. Gary E. Schwartz received payments from drug or device companies?
CMS Open Payments shows $1,259 in general payments to Dr. Schwartz from 10 companies from 2018 to 2022. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Gary E. Schwartz been practicing?
Dr. Schwartz graduated from medical school in 1983, 43 years ago.
Does Dr. Gary E. Schwartz do research?
Dmand AI links 210 publications to Dr. Schwartz, published from 2006 to 2025.
Who does Dr. Gary E. Schwartz publish with?
Dr. Schwartz's most frequent co-authors are James Richard Berenson, MD (3 shared papers), David P. Kelsen, MD (2 shared papers) and Nancy G. Klimas, MD (2 shared papers).
Selling to hematology and oncology practices?
See hematologists and oncologists in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card