Dr. Ronald Eugene De La Pena, MD
- Medicare services, 2024
- 319
- Medicare patients, 2024
- 145
- Part D claims, 2024
- 186
- Hospital affiliations
- 2
- Industry payments
- $12,233
- Practice address
- 2230 Lynn Rd, Thousand Oaks, CA 91360
- Practice phone
- Call (805) 370-3137
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Lynn Eye Surgery Center
Thousand Oaks, California
Find Dr. De La Pena'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. Ronald Eugene De La Pena is an OB-GYN in Thousand Oaks, California
Dr. De La Pena practices at Lynn Eye Surgery Center in Thousand Oaks, California.
Dr. De La Pena's NPI, 1194779710, was assigned on May 19, 2006. Dr. De La Pena graduated from Texas Tech University Health Sciences Center School of Medicine in 1991. Dr. De La Pena holds California license A54034.
- NPI
- 1194779710NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1052386786
- NPI enumeration date
- May 19, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (805) 370-3137
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 57
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ronald Eugene De La Pena practices at Lynn Eye Surgery Center in Thousand Oaks, California
Dr. De La Pena's primary practice is Lynn Eye Surgery Center, at 2230 Lynn Rd, Thousand Oaks, CA 91360 in Ventura County. The practice phone is (805) 370-3137.
- Lynn Eye Surgery Center2230 Lynn Rd, Thousand Oaks, CA 91360 · Ventura CountyPhone(805) 370-3137
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Ronald Eugene De La Pena is affiliated with 5 sites of care and 3 medical groups
Dr. De La Pena's primary practice is Lynn Eye Surgery Center in Thousand Oaks, California. Dr. De La Pena is also affiliated with Los Robles Regional Medical Center. The medical group on file is Ob Hospitalist Group. Dmand AI also links Dr. De La Pena to 1 more hospital, 2 group practices and clinics and 2 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Ronald Eugene De La Pena's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. De La Pena practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Lynn Eye Surgery Center | Available with a free account |
| +4 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ronald Eugene De La Pena is one of 4,642 OB-GYNs in California
Obstetrics and gynecology is Dr. De La Pena's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. De La Pena is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology. Dmand AI has Dr. De La Pena's licenses on file in 2 states: California and Texas.
Specialties and state licenses
- Obstetrics and gynecology, CaliforniaPrimary
- Texas license
Clinical focus
Dmand AI lists menopause, ovarian cyst, pelvic prolapse, UTI and vaginal infection among the conditions Dr. De La Pena treats.
OB-GYNs near Dr. De La Pena
Counts of OB-GYNs 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. Ronald Eugene De La Pena billed Medicare for 319 services in 2024
CMS data shows 319 Medicare services from Dr. De La Pena across 7 procedure codes in 2024, for 145 Medicare patients. Medicare paid $20,999 for them. Every service was in an office.
Dr. De La Pena's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1602024: 1728%
- Other services
- 2023: 1432024: 1346%
- Tests and treatments
- 2023: 02024: 13
Dr. De La Pena compared with the California median for OB-GYNs, 2024
- Dr. De La Pena
- California median
- Medicare services
- 319vs 585.5 times
- Medicare patients
- 145vs 522.8 times
- Part D claims
- 121vs 353.5 times
Medians across 3,823 OB-GYNs in California with Dmand AI profiles that report each measure.
Dr. De La Pena'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. De La Pena?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. De La Pena and other OB-GYNs in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ronald Eugene De La Pena treated 145 Medicare patients in 2024, average age 75
CMS counts 145 Medicare patients who saw Dr. De La Pena in 2024. The largest group is 65 to 74, with 65 patients. 75% of them have high cholesterol, and 62% have arthritis. Their average risk score is 0.93, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. De La Pena's median patient age at 46, with 98% women.
Dr. De La Pena's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. De La Pena's Medicare patients, 2024
- High cholesterol75%
- Arthritis62%
- High blood pressure58%
- Osteoporosis34%
- Mood disorders22%
- Depression21%
- Diabetes19%
- Ischemic heart disease18%
Share of Medicare patients with each condition. A patient can have several.
Dr. De La Pena's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 46
Patient panel by sex, all payers
- Women98%
- Men1%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ronald Eugene De La Pena wrote 186 Medicare Part D claims in 2024
In 2024, Dr. De La Pena wrote 186 Medicare Part D claims for 56 patients. 69% of them were for generic drugs. CMS names the drug for 121 of them, across 6 drugs with 11 or more claims each, at $17,936 in total drug cost. In 2023, CMS named 112 claims across 5 drugs.
Dr. De La Pena's Part D claims by kind of drug, 2024
- Generic128 claims69%
- Brand-name58 claims31%
Dr. De La Pena'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: 1122024: 1218%
Drugs named by CMS: 6 in 2024, 5 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. Ronald Eugene De La Pena takes part in Medicare
Dr. De La Pena 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. Ronald Eugene De La Pena received $12,233 in industry payments from 2016 to 2025
CMS Open Payments shows 598 general payments to Dr. De La Pena from 81 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 91% of the total. Amgen Inc. paid the most, $2,340.
General payments to Dr. De La Pena by program year, 2016 to 2025
General payments to Dr. De La Pena by kind, 2016 to 2025
- Food and beverage$11,09991%
- Travel and lodging$9047%
- Education$2302%
Companies that paid Dr. De La Pena the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ronald Eugene De La Pena has 1 award and honors on record
Dmand AI lists 1 award for Dr. De La Pena.
Awards and honors for Dr. De La Pena
- Undated
- ACOG Fellow
Source: Dmand AI Professional Profile Data
Dr. Ronald Eugene De La Pena graduated from Texas Tech University Health Sciences Center School of Medicine
Dr. De La Pena graduated from Texas Tech University Health Sciences Center School of Medicine in 1991. Dr. De La Pena is a member of American College of Obstetricians and Gynecologists.
- Medical school
- Board certified in obstetrics & gynecology
Source: Dmand AI Professional Profile Data
Dr. Ronald Eugene De La Pena accepts plans from 13 insurance carriers
Dr. De La Pena is in network with 13 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Elevance
- United Healthcare
- HCSC
- Molina
- Regence Health Plans
- Alliant Health Plans
- +5 more carriersWith a free account
Plan types Dr. De La Pena accepts, by number of carriers
- PPO8
- HMO7
- Medicare7
- EPO4
- POS4
Source: Dmand AI Insurance Network Data
Sources for Dr. Ronald Eugene De La Pena'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 Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| 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. Ronald Eugene De La Pena
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. Ronald Eugene De La Pena's NPI number?
Dr. Ronald Eugene De La Pena's NPI number is 1194779710. It was assigned on May 19, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ronald Eugene De La Pena?
Dr. Ronald Eugene De La Pena is an OB-GYN in Thousand Oaks, California. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Ronald Eugene De La Pena practice?
Dr. De La Pena practices at 2230 Lynn Rd, Thousand Oaks, CA 91360. Dr. De La Pena's primary practice is Lynn Eye Surgery Center in Thousand Oaks, California. Dmand AI also links Dr. De La Pena to 1 hospital, 2 group practices and clinics and 2 medical groups.
What is Dr. Ronald Eugene De La Pena's office phone number?
The practice phone on file for Dr. De La Pena is (805) 370-3137.
What is Dr. Ronald Eugene De La Pena's medical license number?
Dr. De La Pena holds California license A54034, one of the licenses on file in 2 states.
Which states has Dr. Ronald Eugene De La Pena been licensed in?
Dmand AI has state licenses on file for Dr. De La Pena in California (1995 to 2026) and Texas (1992 to 2000).
Which hospitals is Dr. Ronald Eugene De La Pena affiliated with?
Dr. De La Pena is affiliated with Los Robles Regional Medical Center. Dmand AI links Dr. De La Pena to 1 more hospital.
What medical group is Dr. Ronald Eugene De La Pena part of?
Dr. De La Pena is linked to Ob Hospitalist Group. Dmand AI links Dr. De La Pena to 2 more medical groups.
Does Dr. Ronald Eugene De La Pena accept Medicare?
Yes. CMS data shows Dr. De La Pena billed Medicare for 319 services in 2024, and Dr. De La Pena accepts Medicare assignment.
How many Medicare patients does Dr. Ronald Eugene De La Pena see?
CMS counts 145 Medicare patients who saw Dr. De La Pena in 2024, with an average age of 75.
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Is Dr. Ronald Eugene De La Pena board certified?
Yes. Dr. De La Pena is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology.
What services does Dr. Ronald Eugene De La Pena bill to Medicare?
In 2024, Dr. De La Pena's most billed Medicare services were office visit, established patient (99214), medicare service (G0101) and medicare service (G0328).
Where did Dr. Ronald Eugene De La Pena go to medical school?
Dr. De La Pena graduated from Texas Tech University Health Sciences Center School of Medicine in 1991.
What drugs does Dr. Ronald Eugene De La Pena prescribe most?
In 2024 Medicare Part D data, Dr. De La Pena's most prescribed drugs by claims were Estradiol, Premarin and Progesterone.
Has Dr. Ronald Eugene De La Pena received payments from drug or device companies?
CMS Open Payments shows $12,233 in general payments to Dr. De La Pena from 81 companies from 2016 to 2025. The largest total came from Amgen Inc.
How long has Dr. Ronald Eugene De La Pena been practicing?
Dr. De La Pena graduated from medical school in 1991, 35 years ago.
What insurance does Dr. Ronald Eugene De La Pena accept?
Dr. De La Pena is in network with 13 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
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