Dr. David W. Ralston, MD
- Part D claims, 2024
- 20
- Affiliated sites
- 2
- Medical groups
- 2
- Insurance carriers
- 1
- State licenses
- 2
- Practice address
- 1 Grand Ave Building 27, San Luis Obispo, CA 93407-0000
- Practice phone
- Call (805) 756-1211
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Cal Poly Health Services
Primary care practice · San Luis Obispo, California
Find Dr. Ralston'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. David W. Ralston is an internist in San Luis Obispo, California
Dr. Ralston practices at Cal Poly Health Services in San Luis Obispo, California.
Dr. Ralston's NPI, 1861537565, was assigned on February 20, 2007. Dr. Ralston graduated from Keck School of Medicine of USC in 1973. Dr. Ralston holds California license G32733.
- NPI
- 1861537565NPI Registry (opens in a new tab)
- NPI enumeration date
- February 20, 2007
- NPI status
- Active
- Practice phone
- (805) 756-1211
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Medical school graduation
- 1973
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David W. Ralston practices at Cal Poly Health Services in San Luis Obispo, California
Dr. Ralston's primary practice is Cal Poly Health Services, at 1 Grand Ave Building 27, San Luis Obispo, CA 93407-0000. The practice phone is (805) 756-1211.
- Cal Poly Health Services1 Grand Ave Building 27, San Luis Obispo, CA 93407-0000Phone(805) 756-1211
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David W. Ralston is affiliated with 2 sites of care and 2 medical groups
Dr. Ralston's primary practice is Cal Poly Health Services in San Luis Obispo, California. Dmand AI also links Dr. Ralston to 2 medical groups and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. David W. Ralston's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ralston practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Cal Poly Health Services | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David W. Ralston is one of 16,751 internists in California
Internal medicine is Dr. Ralston's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Ralston is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Ralston's licenses on file in 2 states: California and Oregon.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- Oregon license
Internists near Dr. Ralston
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. David W. Ralston wrote 20 Medicare Part D claims in 2024
In 2024, Dr. Ralston wrote 20 Medicare Part D claims. 95% of them were for generic drugs.
Dr. Ralston's Part D claims by kind of drug, 2024
- Generic19 claims95%
- Brand-name and other1 claims5%
Drug classes CMS tracks in Dr. Ralston's Part D claims, 2024
- Antibiotics75%15 of 20 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. David W. Ralston graduated from Keck School of Medicine of USC
Dr. Ralston graduated from Keck School of Medicine of USC in 1973.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. David W. Ralston accepts plans from 1 insurance carrier
Dr. Ralston is in network with 1 carrier, including Elevance. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Elevance
Plan types Dr. Ralston accepts, by number of carriers
- Medicare1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. David W. Ralston'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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (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. David W. Ralston
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. David W. Ralston's NPI number?
Dr. David W. Ralston's NPI number is 1861537565. It was assigned on February 20, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. David W. Ralston?
Dr. David W. Ralston is an internist in San Luis Obispo, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. David W. Ralston practice?
Dr. Ralston practices at 1 Grand Ave Building 27, San Luis Obispo, CA 93407-0000. Dr. Ralston's primary practice is Cal Poly Health Services in San Luis Obispo, California. Dmand AI also links Dr. Ralston to 2 medical groups and 1 group practice or clinic.
What is Dr. David W. Ralston's office phone number?
The practice phone on file for Dr. Ralston is (805) 756-1211.
What is Dr. David W. Ralston's medical license number?
Dr. Ralston holds California license G32733, one of the licenses on file in 2 states.
Which states has Dr. David W. Ralston been licensed in?
Dmand AI has state licenses on file for Dr. Ralston in California (1976 to 2026) and Oregon (since 1974).
Is Dr. David W. Ralston board certified?
Yes. Dr. Ralston is board certified in internal medicine by the American Board of Internal Medicine.
Where did Dr. David W. Ralston go to medical school?
Dr. Ralston graduated from Keck School of Medicine of USC in 1973.
How long has Dr. David W. Ralston been practicing?
Dr. Ralston graduated from medical school in 1973, 53 years ago.
What insurance does Dr. David W. Ralston accept?
Dr. Ralston is in network with 1 carrier, including Elevance. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
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