Dr. Richard M. Delfs, MD
- Part D claims, 2020
- 98
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 710 Lawrence Expy Dept 260, Santa Clara, CA 95051
- Practice phone
- Call (408) 851-2171
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Permanente Medical Group - Santa Clara (Lawrence Expy)
Multi-specialty group site · Santa Clara, California
Find Dr. Delfs' 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. Richard M. Delfs is an internist in Santa Clara, California
Dr. Delfs practices at Permanente Medical Group - Santa Clara (Lawrence Expy) in Santa Clara, California.
Dr. Delfs' NPI, 1417034372, was assigned on October 31, 2006. Dr. Delfs graduated from Vagelos College of Physicians and Surgeons in 1982. Dr. Delfs holds California license G54445.
- NPI
- 1417034372NPI Registry (opens in a new tab)
- NPI enumeration date
- October 31, 2006
- NPI status
- Active
- Practice phone
- (408) 851-2171
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Richard M. Delfs practices at Permanente Medical Group - Santa Clara (Lawrence Expy) in Santa Clara, California
Dr. Delfs' primary practice is Permanente Medical Group - Santa Clara (Lawrence Expy), at 710 Lawrence Expy Dept 260, Santa Clara, CA 95051. The practice phone is (408) 851-2171.
- Permanente Medical Group - Santa Clara (Lawrence Expy)710 Lawrence Expy Dept 260, Santa Clara, CA 95051Phone(408) 851-2171
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Richard M. Delfs is affiliated with 1 site of care and 1 medical group
Dr. Delfs' primary practice is Permanente Medical Group - Santa Clara (Lawrence Expy) in Santa Clara, California. The medical group on file is The Permanente Medical Group, Inc.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Richard M. Delfs' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Delfs practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Permanente Medical Group - Santa Clara (Lawrence Expy) | 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. Richard M. Delfs is one of 16,751 internists in California
Internal medicine is Dr. Delfs' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Delfs is board certified in internal medicine by the American Board of Internal Medicine. Dr. Delfs is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Delfs
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. Richard M. Delfs' patients have a median age of 64
Across all payers, Dmand AI patient panel data puts Dr. Delfs' median patient age at 64, with 33% women.
Dr. Delfs' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women33%
- Men67%
Source: Dmand AI Patient Panel Data
Dr. Richard M. Delfs wrote 98 Medicare Part D claims in 2020
In 2020, Dr. Delfs wrote 98 Medicare Part D claims. Every claim was for a generic drug. They cover 5 drugs, with $1,601 in total drug cost. In 2019, CMS named 536 claims across 23 drugs.
Dr. Delfs' most prescribed drugs by claims, 2020
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, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 5362020: 9882%
Drugs named by CMS: 5 in 2020, 23 in 2019.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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. Richard M. Delfs graduated from Vagelos College of Physicians and Surgeons
Dr. Delfs graduated from Vagelos College of Physicians and Surgeons in 1982.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Sources for Dr. Richard M. Delfs'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) |
| 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) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. Richard M. Delfs
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. Richard M. Delfs' NPI number?
Dr. Richard M. Delfs' NPI number is 1417034372. It was assigned on October 31, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Richard M. Delfs?
Dr. Richard M. Delfs is an internist in Santa Clara, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Richard M. Delfs practice?
Dr. Delfs practices at 710 Lawrence Expy Dept 260, Santa Clara, CA 95051. Dr. Delfs' primary practice is Permanente Medical Group - Santa Clara (Lawrence Expy) in Santa Clara, California.
What is Dr. Richard M. Delfs' office phone number?
The practice phone on file for Dr. Delfs is (408) 851-2171.
What is Dr. Richard M. Delfs' medical license number?
Dr. Delfs holds California license G54445.
What medical group is Dr. Richard M. Delfs part of?
Dr. Delfs is linked to The Permanente Medical Group, Inc.
Is Dr. Richard M. Delfs board certified?
Yes. Dr. Delfs is board certified in internal medicine by the American Board of Internal Medicine.
Where did Dr. Richard M. Delfs go to medical school?
Dr. Delfs graduated from Vagelos College of Physicians and Surgeons in 1982.
What drugs does Dr. Richard M. Delfs prescribe most?
In 2020 Medicare Part D data, Dr. Delfs' most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Gabapentin.
How long has Dr. Richard M. Delfs been practicing?
Dr. Delfs graduated from medical school in 1982, 44 years ago.
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