Dr. Gilbert Owen Andersen, MD
- Medicare services, 2023
- 122
- Part D claims, 2024
- 1,476
- Hospital affiliations
- 1
- Industry payments
- $785
- Medical group
- 1
- Practice address
- 1515 E Ocean Avenue, Lompoc, CA 93436
- Practice phone
- Call (805) 737-3300
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Andersen'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. Gilbert Owen Andersen is an internist in Lompoc, California
Dr. Andersen practices at Lompoc Valley Medical Center in Lompoc, California, part of Lompoc Valley Medical Center.
Dr. Andersen's NPI, 1821091836, was assigned on May 23, 2005. Dr. Andersen graduated from UC Irvine School of Medicine in 1974. Dr. Andersen holds California license A29916.
- NPI
- 1821091836NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9537140249
- NPI enumeration date
- May 23, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (805) 737-3300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 78
- Medical school graduation
- 1974
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gilbert Owen Andersen practices at 2 locations in Lompoc, California
Dr. Andersen's primary practice is Lompoc Valley Medical Center, at 1515 E Ocean Avenue, Lompoc, CA 93436 in Santa Barbara County. The practice phone is (805) 737-3300. Dr. Andersen also practices at Lompoc Valley Medical Center, 1509 Ocean Way, Lompoc, CA 93436.
- Lompoc Valley Medical CenterPrimary1515 E Ocean Avenue, Lompoc, CA 93436 · Santa Barbara CountyPhone(805) 737-3300
- Lompoc Valley Medical Center1509 Ocean Way, Lompoc, CA 93436 · Santa Barbara CountyPhone(805) 737-3300
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Gilbert Owen Andersen is affiliated with 2 sites of care and 1 medical group
Dr. Andersen's primary practice is Lompoc Valley Medical Center in Lompoc, California, part of Lompoc Valley Medical Center. The medical group on file is Lompoc Valley Medical Center. Dmand AI also links Dr. Andersen to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gilbert Owen Andersen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Andersen practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Lompoc Valley Medical Center | Available with a free account |
| +1 more affiliated site | 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 Lompoc Valley Medical Center and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Gilbert Owen Andersen is one of 16,751 internists in California
Internal medicine is Dr. Andersen's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Andersen is board certified in internal medicine by the American Board of Internal Medicine. Dr. Andersen is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists atrial fibrillation and flutter, cerebrovascular disease, chronic diabetes, chronic obstructive pulmonary disease (COPD), coronary artery disease, heart failure, mobility impairment and non-alzheimer's dementia (chronic) among the conditions Dr. Andersen treats.
Internists near Dr. Andersen
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. Gilbert Owen Andersen billed Medicare for 122 services in 2023
CMS data shows 122 Medicare services from Dr. Andersen across 1 procedure code in 2023. Medicare paid $8,710 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Andersen's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 6032023: 12280%
Dr. Andersen compared with the California median for internists, 2023
- Dr. Andersen
- California median
- Medicare services
- 122vs 36166% below
- Part D claims
- 1,212vs 4212.9 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Andersen's most billed Medicare procedure codes, 2023
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. Andersen?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Andersen and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gilbert Owen Andersen's patients have a median age of 60
Across all payers, Dmand AI patient panel data puts Dr. Andersen's median patient age at 60, with 54% women.
Dr. Andersen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women54%
- Men44%
Source: Dmand AI Patient Panel Data
Dr. Gilbert Owen Andersen wrote 1,476 Medicare Part D claims in 2024
In 2024, Dr. Andersen wrote 1,476 Medicare Part D claims for 58 patients. 83% of them were for generic drugs. CMS names the drug for 1,212 of them, across 45 drugs with 11 or more claims each, at $163,243 in total drug cost. In 2023, CMS named 1,651 claims across 50 drugs.
Dr. Andersen's Part D claims by kind of drug, 2024
- Generic1,221 claims83%
- Brand-name235 claims16%
- Other20 claims1%
Dr. Andersen'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. Andersen's Part D claims, 2024
- Opioids1%19 of 1,476 claims
- Antibiotics3%38 of 1,476 claims
- Antipsychotics, patients 65 and over1%15 of 1,476 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: 1,6512024: 1,21227%
Drugs named by CMS: 45 in 2024, 50 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. Gilbert Owen Andersen takes part in Medicare
Dr. Andersen accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Knee replacement: 1 to 10 procedures (CMS shows small counts as a range)
Lower limb (leg) arthroscopy (minimally invasive joint repair): 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Gilbert Owen Andersen received $785 in industry payments from 2016 to 2022
CMS Open Payments shows 37 general payments to Dr. Andersen from 14 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 95% of the total. Pfizer Inc. paid the most, $209.
General payments to Dr. Andersen by program year, 2016 to 2022
General payments to Dr. Andersen by kind, 2016 to 2022
- Food and beverage$74895%
- Education$385%
Companies that paid Dr. Andersen the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gilbert Owen Andersen graduated from UC Irvine School of Medicine
Dr. Andersen graduated from UC Irvine School of Medicine in 1974.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Gilbert Owen Andersen accepts plans from 14 insurance carriers
Dr. Andersen is in network with 14 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Elevance. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- HCSC
- Aetna
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- +6 more carriersWith a free account
Plan types Dr. Andersen accepts, by number of carriers
- PPO9
- HMO6
- Medicare6
- EPO3
- POS3
Source: Dmand AI Insurance Network Data
Sources for Dr. Gilbert Owen Andersen'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 DataDmand AI Practice 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 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Gilbert Owen Andersen
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. Gilbert Owen Andersen's NPI number?
Dr. Gilbert Owen Andersen's NPI number is 1821091836. It was assigned on May 23, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Gilbert Owen Andersen?
Dr. Gilbert Owen Andersen is an internist in Lompoc, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Gilbert Owen Andersen practice?
Dr. Andersen practices at 1515 E Ocean Avenue, Lompoc, CA 93436. Dr. Andersen also practices at 1509 Ocean Way, Lompoc, CA 93436. Dr. Andersen's primary practice is Lompoc Valley Medical Center in Lompoc, California, part of Lompoc Valley Medical Center. Dmand AI also links Dr. Andersen to 1 group practice or clinic.
What is Dr. Gilbert Owen Andersen's office phone number?
The practice phone on file for Dr. Andersen is (805) 737-3300.
What is Dr. Gilbert Owen Andersen's medical license number?
Dr. Andersen holds California license A29916.
Which hospitals is Dr. Gilbert Owen Andersen affiliated with?
Dr. Andersen practices at Lompoc Valley Medical Center in Lompoc, California.
What medical group is Dr. Gilbert Owen Andersen part of?
Dr. Andersen is linked to Lompoc Valley Medical Center.
Does Dr. Gilbert Owen Andersen accept Medicare?
Yes. CMS data shows Dr. Andersen billed Medicare for 122 services in 2023, and Dr. Andersen accepts Medicare assignment.
Is Dr. Gilbert Owen Andersen board certified?
Yes. Dr. Andersen is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Gilbert Owen Andersen bill to Medicare?
In 2023, Dr. Andersen's most billed Medicare services were nursing facility care (99309).
Show 5 more questionsShow fewer questions
Where did Dr. Gilbert Owen Andersen go to medical school?
Dr. Andersen graduated from UC Irvine School of Medicine in 1974.
What drugs does Dr. Gilbert Owen Andersen prescribe most?
In 2024 Medicare Part D data, Dr. Andersen's most prescribed drugs by claims were Levothyroxine Sodium, Amlodipine Besylate and Lisinopril.
Has Dr. Gilbert Owen Andersen received payments from drug or device companies?
CMS Open Payments shows $785 in general payments to Dr. Andersen from 14 companies from 2016 to 2022. The largest total came from Pfizer Inc.
How long has Dr. Gilbert Owen Andersen been practicing?
Dr. Andersen graduated from medical school in 1974, 52 years ago.
What insurance does Dr. Gilbert Owen Andersen accept?
Dr. Andersen is in network with 14 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Elevance. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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