Dr. Gerald William Ondash, MD
- Medicare services, 2023
- 15
- Part D claims, 2024
- 30
- Industry payments
- $692
- Medical group
- 1
- Insurance carriers
- 3
- Practice address
- 130 Cedar Rd, Vista, CA 92083-5102
- Practice phone
- Call (760) 806-5400
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Scripps Clinic Medical Laboratory - Cedar
Clinical laboratory · Vista, California
Find Dr. Ondash'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. Gerald William Ondash is an internist in Oceanside, California
Dr. Ondash practices at Scripps Clinic Medical Laboratory - Cedar in Vista, California.
Dr. Ondash's NPI, 1730102153, was assigned on July 26, 2006. Dr. Ondash graduated from Saint Louis University School Of Medicine in 1968. Dr. Ondash holds California license C31572.
- NPI
- 1730102153NPI Registry (opens in a new tab)
- NPI enumeration date
- July 26, 2006
- NPI status
- Active
- Practice phone
- (760) 806-5400
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 84
- Medical school graduation
- 1968
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gerald William Ondash practices in Vista and Oceanside
Dr. Ondash's primary practice is Scripps Clinic Medical Laboratory - Cedar, at 130 Cedar Rd, Vista, CA 92083-5102. The practice phone is (760) 806-5400. The NPI Registry lists Dr. Ondash's practice address as 2205 Vista Way, Oceanside, CA 92054.
- Scripps Clinic Medical Laboratory - CedarPrimary130 Cedar Rd, Vista, CA 92083-5102Phone(760) 806-5400
- NPI Registry address2205 Vista Way, Oceanside, CA 92054 · San Diego CountyPhone(760) 806-5820
Sources: NPPES NPI Registry (CMS); Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Gerald William Ondash is affiliated with 1 site of care and 1 medical group
Dr. Ondash's primary practice is Scripps Clinic Medical Laboratory - Cedar in Vista, California. The medical group on file is Scripps Clinic Medical Group.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Gerald William Ondash's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ondash practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Scripps Clinic Medical Laboratory - Cedar | 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. Gerald William Ondash is one of 16,751 internists in California
Internal medicine is Dr. Ondash's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Ondash is board certified in internal medicine by the American Board of Internal Medicine. Dr. Ondash is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists acid reflux, chronic diabetes, chronic hypertension, coronary artery disease, eyelid inflammation, intestinal diverticulosis, joint pain and lower back pain among the conditions Dr. Ondash treats.
Internists near Dr. Ondash
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. Gerald William Ondash billed Medicare for 15 services in 2023
CMS data shows 15 Medicare services from Dr. Ondash across 1 procedure code in 2023, all of them office visits. Medicare paid $1,004 for them. Every service was in an office.
Dr. Ondash's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 552023: 1573%
Dr. Ondash compared with the California median for internists, 2023
- Dr. Ondash
- California median
- Medicare services
- 15vs 36196% below
- Part D claims
- 20vs 42195% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Ondash'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. Ondash?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ondash and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gerald William Ondash's patients have a median age of 70
Across all payers, Dmand AI patient panel data puts Dr. Ondash's median patient age at 70, with 49% women.
Dr. Ondash's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women49%
- Men49%
Source: Dmand AI Patient Panel Data
Dr. Gerald William Ondash wrote 30 Medicare Part D claims in 2024
In 2024, Dr. Ondash wrote 30 Medicare Part D claims. 93% of them were for generic drugs. CMS names the drug for 20 of them, across 1 drug with 11 or more claims each, at $763 in total drug cost. In 2022, CMS named 91 claims across 6 drugs.
Dr. Ondash's Part D claims by kind of drug, 2024
- Generic28 claims93%
- Brand-name and other2 claims7%
Dr. Ondash'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: 912023: 2078%
Drugs named by CMS: 1 in 2023, 6 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. Gerald William Ondash received $692 in industry payments from 2016 to 2018
CMS Open Payments shows 47 general payments to Dr. Ondash from 15 drug and device companies from 2016 to 2018. Food and beverage make up the largest share, 100% of the total. GlaxoSmithKline, LLC. paid the most, $197.
General payments to Dr. Ondash by program year, 2016 to 2018
Companies that paid Dr. Ondash the most, 2016 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gerald William Ondash graduated from Saint Louis University School Of Medicine
Dr. Ondash graduated from Saint Louis University School Of Medicine in 1968.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Gerald William Ondash accepts plans from 3 insurance carriers
Dr. Ondash is in network with 3 carriers, including Elevance, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Massachusetts
- HCSC
Plan types Dr. Ondash accepts, by number of carriers
- Medicare3
- PPO3
- EPO1
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Gerald William Ondash'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)Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand 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 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) |
| 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. Gerald William Ondash
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. Gerald William Ondash's NPI number?
Dr. Gerald William Ondash's NPI number is 1730102153. It was assigned on July 26, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gerald William Ondash?
Dr. Gerald William Ondash is an internist in Oceanside, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Gerald William Ondash practice?
Dr. Ondash practices at 130 Cedar Rd, Vista, CA 92083-5102. Dr. Ondash also practices at 2205 Vista Way, Oceanside, CA 92054. Dr. Ondash's primary practice is Scripps Clinic Medical Laboratory - Cedar in Vista, California.
What is Dr. Gerald William Ondash's office phone number?
The practice phone on file for Dr. Ondash is (760) 806-5400.
What is Dr. Gerald William Ondash's medical license number?
Dr. Ondash holds California license C31572.
What medical group is Dr. Gerald William Ondash part of?
Dr. Ondash is linked to Scripps Clinic Medical Group.
Does Dr. Gerald William Ondash accept Medicare?
Yes. CMS data shows Dr. Ondash billed Medicare for 15 services in 2023.
Is Dr. Gerald William Ondash board certified?
Yes. Dr. Ondash is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Gerald William Ondash bill to Medicare?
In 2023, Dr. Ondash's most billed Medicare services were office visit, established patient (99213).
Where did Dr. Gerald William Ondash go to medical school?
Dr. Ondash graduated from Saint Louis University School Of Medicine in 1968.
Show 4 more questionsShow fewer questions
What drugs does Dr. Gerald William Ondash prescribe most?
In 2023 Medicare Part D data, Dr. Ondash's most prescribed drugs by claims were Losartan Potassium.
Has Dr. Gerald William Ondash received payments from drug or device companies?
CMS Open Payments shows $692 in general payments to Dr. Ondash from 15 companies from 2016 to 2018. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. Gerald William Ondash been practicing?
Dr. Ondash graduated from medical school in 1968, 58 years ago.
What insurance does Dr. Gerald William Ondash accept?
Dr. Ondash is in network with 3 carriers, including Elevance, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.
Selling to internal medicine practices?
See internists 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