Dr. Eric Adam Marks, MD
- Part D claims, 2024
- 2,264
- MIPS score, 2024
- 86
- Hospital affiliations
- 1
- Industry payments
- $246
- Medical group
- 1
- Practice address
- 3801 Las Posas Road #214, Camarillo, CA 93010
- Practice phone
- Call (805) 437-0900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Las Posas Family Medical Group
FQHC - Main Site · Camarillo, California
Find Dr. Marks' 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. Eric Adam Marks is an internist in Camarillo, California
Dr. Marks practices at Las Posas Family Medical Group in Camarillo, California.
Dr. Marks' NPI, 1720089790, was assigned on August 2, 2005. Dr. Marks holds Texas license K3325.
- NPI
- 1720089790NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9739085168
- NPI enumeration date
- August 2, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (805) 437-0900
- 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. Eric Adam Marks practices at Las Posas Family Medical Group in Camarillo, California
Dr. Marks' primary practice is Las Posas Family Medical Group, at 3801 Las Posas Road #214, Camarillo, CA 93010 in Ventura County. The practice phone is (805) 437-0900.
- Las Posas Family Medical Group3801 Las Posas Road #214, Camarillo, CA 93010 · Ventura CountyPhone(805) 437-0900
Source: Dmand AI Affiliation Data
Dr. Eric Adam Marks is affiliated with 3 sites of care and 1 medical group
Dr. Marks' primary practice is Las Posas Family Medical Group in Camarillo, California. Dr. Marks is also affiliated with Ventura County Medical Center. The medical group on file is Ventura County Medical Center. Dmand AI also links Dr. Marks to 1 more physician office, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Eric Adam Marks' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Marks practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Las Posas Family Medical Group | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Eric Adam Marks is one of 16,751 internists in California
Internal medicine is Dr. Marks' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Marks is licensed in Texas.
Specialties and state licenses
- Internal medicine, TexasPrimary
Internists near Dr. Marks
Counts of internists 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. Eric Adam Marks' patients have a median age of 52
Across all payers, Dmand AI patient panel data puts Dr. Marks' median patient age at 52, with 51% women.
Dr. Marks' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 52
Patient panel by sex, all payers
- Women51%
- Men49%
Source: Dmand AI Patient Panel Data
Dr. Eric Adam Marks wrote 2,264 Medicare Part D claims in 2024
In 2024, Dr. Marks wrote 2,264 Medicare Part D claims for 188 patients. 85% of them were for generic drugs. CMS names the drug for 1,733 of them, across 61 drugs with 11 or more claims each, at $151,504 in total drug cost. In 2023, CMS named 1,242 claims across 47 drugs.
Dr. Marks' Part D claims by kind of drug, 2024
- Generic1,933 claims85%
- Brand-name and other331 claims15%
Dr. Marks' 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. Marks' Part D claims, 2024
- Opioids2%51 of 2,264 claims
- Antibiotics2%43 of 2,264 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: 1,2422024: 1,73340%
Drugs named by CMS: 61 in 2024, 47 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
Dr. Eric Adam Marks scored 86 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 86 out of 100 for Dr. Marks for performance year 2024, reported as part of a group. Dr. Marks accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Marks' MIPS scores, performance year 2024
- 86of 100Final score
- 64.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 72of 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. Eric Adam Marks received $246 in industry payments from 2019 to 2020
CMS Open Payments shows 10 general payments to Dr. Marks from 5 drug and device companies from 2019 to 2020. Food and beverage make up the largest share, 100% of the total. Amgen Inc. paid the most, $172.
General payments to Dr. Marks by program year, 2019 to 2020
Companies that paid Dr. Marks the most, 2019 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Eric Adam Marks'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 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Eric Adam Marks
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. Eric Adam Marks' NPI number?
Dr. Eric Adam Marks' NPI number is 1720089790. It was assigned on August 2, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Eric Adam Marks?
Dr. Eric Adam Marks is an internist in Camarillo, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Eric Adam Marks practice?
Dr. Marks practices at 3801 Las Posas Road #214, Camarillo, CA 93010. Dr. Marks' primary practice is Las Posas Family Medical Group in Camarillo, California. Dmand AI also links Dr. Marks to 1 physician office.
What is Dr. Eric Adam Marks' office phone number?
The practice phone on file for Dr. Marks is (805) 437-0900.
What is Dr. Eric Adam Marks' medical license number?
Dr. Marks holds Texas license K3325.
Which hospitals is Dr. Eric Adam Marks affiliated with?
Dr. Marks is affiliated with Ventura County Medical Center.
What medical group is Dr. Eric Adam Marks part of?
Dr. Marks is linked to Ventura County Medical Center.
Does Dr. Eric Adam Marks accept Medicare?
Yes. CMS lists Dr. Marks as accepting Medicare assignment.
What is Dr. Eric Adam Marks' MIPS score?
Dr. Marks' MIPS final score for performance year 2024 is 86 out of 100, reported as part of a group.
What drugs does Dr. Eric Adam Marks prescribe most?
In 2024 Medicare Part D data, Dr. Marks' most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Lisinopril.
Has Dr. Eric Adam Marks received payments from drug or device companies?
CMS Open Payments shows $246 in general payments to Dr. Marks from 5 companies from 2019 to 2020. The largest total came from Amgen Inc.
How long has Dr. Eric Adam Marks been practicing?
Dr. Marks graduated from medical school in 1989, 37 years ago.
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