Dr. Marc K. Eckstein, MD
- Medicare services, 2024
- 1,418
- Medicare patients, 2024
- 854
- Part D claims, 2024
- 198
- Publications
- 12
- Clinical trials
- 1
- Practice address
- 215 W Janss Rd, Thousand Oaks, CA 91360
- Practice phone
- Call (805) 497-2727
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Eckstein'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. Marc K. Eckstein is an emergency medicine physician in Thousand Oaks, California
Dr. Eckstein practices at Los Robles Regional Medical Center in Thousand Oaks, California, part of HCA Healthcare.
Dr. Eckstein's NPI, 1922010867, was assigned on August 12, 2006. Dr. Eckstein graduated from Icahn School Of Medicine At Mount Sinai in 1989. Dr. Eckstein's California license number on file is G69852.
- NPI
- 1922010867NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3274500640
- NPI enumeration date
- August 12, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (805) 497-2727
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 63
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Marc K. Eckstein practices at Los Robles Regional Medical Center in Thousand Oaks, California
Dr. Eckstein's primary practice is Los Robles Regional Medical Center, at 215 W Janss Rd, Thousand Oaks, CA 91360 in Ventura County. The practice phone is (805) 497-2727.
- Los Robles Regional Medical Center215 W Janss Rd, Thousand Oaks, CA 91360 · Ventura CountyPhone(805) 497-2727
Source: Dmand AI Affiliation Data
Dr. Marc K. Eckstein is affiliated with 3 sites of care and 4 medical groups
Dr. Eckstein's primary practice is Los Robles Regional Medical Center in Thousand Oaks, California, part of HCA Healthcare. The medical group on file is USC Care Medical Group. Dmand AI also links Dr. Eckstein to 3 more medical groups and 2 group practices and clinics, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Marc K. Eckstein's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Eckstein practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Los Robles Regional Medical Center | Available with a free account |
| +2 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Marc K. Eckstein is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Eckstein's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Eckstein is board certified in emergency medical services by the American Board of Emergency Medicine. Dmand AI has Dr. Eckstein's licenses on file in 4 states: California, Texas, Arizona and Florida.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
- Texas license
- Arizona license
- Florida license
Emergency medicine physicians near Dr. Eckstein
Counts of emergency medicine physicians 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. Marc K. Eckstein billed Medicare for 1,418 services in 2024
CMS data shows 1,418 Medicare services from Dr. Eckstein across 6 procedure codes in 2024, for 854 Medicare patients. Medicare paid $128,846 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Eckstein's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4052024: 913125%
- Tests and treatments
- 2023: 1972024: 491149%
- Surgery
- 2023: 02024: 14
Dr. Eckstein compared with the California median for emergency medicine physicians, 2024
- Dr. Eckstein
- California median
- Medicare services
- 1,418vs 2655.4 times
- Medicare patients
- 854vs 2433.5 times
- Part D claims
- 69vs 6211% above
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Eckstein'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.
Need commercial claims for Dr. Eckstein?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Eckstein and other emergency medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Marc K. Eckstein treated 854 Medicare patients in 2024, average age 78
CMS counts 854 Medicare patients who saw Dr. Eckstein in 2024. The largest group is 75 to 84, with 305 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 17% are also on Medicaid. Their average risk score is 2.05, 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. Eckstein's median patient age at 58, with 57% women.
Dr. Eckstein's Medicare patients by age, 2024
Dr. Eckstein's Medicare patients by sex, 2024
- Women49858%
- Men35642%
Chronic conditions among Dr. Eckstein's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis64%
- Ischemic heart disease45%
- Anxiety40%
- Mood disorders40%
- Atrial fibrillation37%
- Chronic kidney disease37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Eckstein's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women57%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Marc K. Eckstein wrote 198 Medicare Part D claims in 2024
In 2024, Dr. Eckstein wrote 198 Medicare Part D claims for 120 patients. 93% of them were for generic drugs. CMS names the drug for 69 of them, across 4 drugs with 11 or more claims each, at $284 in total drug cost. In 2023, CMS named 26 claims across 2 drugs.
Dr. Eckstein's Part D claims by kind of drug, 2024
- Generic185 claims93%
- Brand-name and other13 claims7%
Dr. Eckstein'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.
Drug classes CMS tracks in Dr. Eckstein's Part D claims, 2024
- Opioids16%31 of 198 claims
- Antibiotics24%48 of 198 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 262024: 69165%
Drugs named by CMS: 4 in 2024, 2 in 2023.
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
How Dr. Marc K. Eckstein takes part in Medicare
Dr. Eckstein accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Marc K. Eckstein has 12 publications on record
Dmand AI links 12 papers to Dr. Eckstein, published from 2015 to 2021. 2018 was the busiest year, with 3. Dr. Eckstein's most frequent co-authors are Stephen George Sanko, MD, Robin Andrea Conwit, MD and Scott L. Hamilton, DO.
Dr. Eckstein's papers by year, 2015 to 2021
Dr. Eckstein's most frequent co-authors
- Stephen George Sanko, MD5 shared papers
- Robin Andrea Conwit, MD2 shared papers
- Scott L. Hamilton, DO2 shared papers
Recent publications by Dr. Eckstein
See who Dr. Eckstein researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Eckstein works with, so you can find a warm path to the right emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Marc K. Eckstein has worked on 1 clinical trial
Dmand AI links Dr. Eckstein to 1 clinical trial. Conditions studied include Stroke and Cerebrovascular Disorders.
Conditions in Dr. Eckstein's trials
- Stroke
- Cerebrovascular Disorders
Investigators on the most trials with Dr. Eckstein
- Jeffrey Lawrence Saver, MD1 shared trial
- Latisha Katie Faina Sharma, MD1 shared trial
- Samuel J Stratton, MD1 shared trial
Recent clinical trials with Dr. Eckstein
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Marc K. Eckstein received $470 in industry payments from 2019 to 2025
CMS Open Payments shows 5 general payments to Dr. Eckstein from 4 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 100% of the total. Stryker Corporation paid the most, $290.
General payments to Dr. Eckstein by program year, 2019 to 2025
Companies that paid Dr. Eckstein the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Marc K. Eckstein has 1 award and honors on record
Dmand AI lists 1 award for Dr. Eckstein.
Awards and honors for Dr. Eckstein
- Undated
- ACEP Fellow
Source: Dmand AI Professional Profile Data
Dr. Marc K. Eckstein graduated from Icahn School Of Medicine At Mount Sinai
Dr. Eckstein graduated from Icahn School Of Medicine At Mount Sinai in 1989. Dr. Eckstein is a member of ACEP.
- Medical school
- Board certified in emergency medical services
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. Marc K. Eckstein accepts plans from 8 insurance carriers
Dr. Eckstein is in network with 8 carriers, including United Healthcare, Aetna and Aspirus Health Plan. PPO plans come from the most carriers, 4. Check the plan with the practice before a visit.
- United Healthcare
- Aetna
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- Elevance
- EMI Health
- HCSC
Plan types Dr. Eckstein accepts, by number of carriers
- PPO4
- HMO2
- Medicare2
- POS2
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Marc K. Eckstein'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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 |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| 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 |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Marc K. Eckstein
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. Marc K. Eckstein's NPI number?
Dr. Marc K. Eckstein's NPI number is 1922010867. It was assigned on August 12, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Marc K. Eckstein?
Dr. Marc K. Eckstein is an emergency medicine physician in Thousand Oaks, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Marc K. Eckstein practice?
Dr. Eckstein practices at 215 W Janss Rd, Thousand Oaks, CA 91360. Dr. Eckstein's primary practice is Los Robles Regional Medical Center in Thousand Oaks, California, part of HCA Healthcare. Dmand AI also links Dr. Eckstein to 3 medical groups and 2 group practices and clinics.
What is Dr. Marc K. Eckstein's office phone number?
The practice phone on file for Dr. Eckstein is (805) 497-2727.
What is Dr. Marc K. Eckstein's medical license number?
Dr. Eckstein's California license number on file is G69852, one of the licenses on file in 4 states.
Which states has Dr. Marc K. Eckstein been licensed in?
Dmand AI has state licenses on file for Dr. Eckstein in California (1990 to 2025), Texas (2021 to 2025), Arizona (2022 to 2024) and Florida (2021 to 2024).
Which hospitals is Dr. Marc K. Eckstein affiliated with?
Dr. Eckstein practices at Los Robles Regional Medical Center in Thousand Oaks, California.
What medical group is Dr. Marc K. Eckstein part of?
Dr. Eckstein is linked to USC Care Medical Group. Dmand AI links Dr. Eckstein to 3 more medical groups.
Does Dr. Marc K. Eckstein accept Medicare?
Yes. CMS data shows Dr. Eckstein billed Medicare for 1,418 services in 2024, and Dr. Eckstein accepts Medicare assignment.
How many Medicare patients does Dr. Marc K. Eckstein see?
CMS counts 854 Medicare patients who saw Dr. Eckstein in 2024, with an average age of 78.
Show 9 more questionsShow fewer questions
Is Dr. Marc K. Eckstein board certified?
Yes. Dr. Eckstein is board certified in emergency medical services by the American Board of Emergency Medicine.
What services does Dr. Marc K. Eckstein bill to Medicare?
In 2024, Dr. Eckstein's most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and critical care (99291).
Where did Dr. Marc K. Eckstein go to medical school?
Dr. Eckstein graduated from Icahn School Of Medicine At Mount Sinai in 1989.
What drugs does Dr. Marc K. Eckstein prescribe most?
In 2024 Medicare Part D data, Dr. Eckstein's most prescribed drugs by claims were Hydrocodone-Acetaminophen, Ibuprofen and Ondansetron ODT.
Has Dr. Marc K. Eckstein received payments from drug or device companies?
CMS Open Payments shows $470 in general payments to Dr. Eckstein from 4 companies from 2019 to 2025. The largest total came from Stryker Corporation.
How long has Dr. Marc K. Eckstein been practicing?
Dr. Eckstein graduated from medical school in 1989, 37 years ago.
Does Dr. Marc K. Eckstein do research?
Dmand AI links 12 publications to Dr. Eckstein, published from 2015 to 2021. Dr. Eckstein has worked on 1 clinical trial.
Who does Dr. Marc K. Eckstein publish with?
Dr. Eckstein's most frequent co-authors are Stephen George Sanko, MD (5 shared papers), Robin Andrea Conwit, MD (2 shared papers) and Scott L. Hamilton, DO (2 shared papers).
What insurance does Dr. Marc K. Eckstein accept?
Dr. Eckstein is in network with 8 carriers, including United Healthcare, Aetna and Aspirus Health Plan. PPO plans come from the most carriers, 4. Check the plan with the practice before a visit.
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