Dr. Ronald K. Shimmin, MD
- Medicare services, 2016
- 216
- Part D claims, 2016
- 219
- Industry payments
- $86
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 268 N McArthur Way, Upland, CA 91786
- Practice phone
- Call (909) 694-4020
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Health Guard Inland
Upland, California
Find Dr. Shimmin'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 K. Shimmin is a general practice physician in Upland, California
Dr. Shimmin practices at Health Guard Inland in Upland, California.
Dr. Shimmin's NPI, 1225153315, was assigned on March 20, 2007. Dr. Shimmin graduated from Universidad Autonoma de Guadalajara in 1979. Dr. Shimmin holds California license A37055.
- NPI
- 1225153315NPI Registry (opens in a new tab)
- NPI enumeration date
- March 20, 2007
- NPI status
- Active
- Practice phone
- (909) 694-4020
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1979
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Ronald K. Shimmin practices at Health Guard Inland in Upland, California
Dr. Shimmin's primary practice is Health Guard Inland, at 268 N McArthur Way, Upland, CA 91786 in San Bernardino County. The practice phone is (909) 694-4020.
- Health Guard Inland268 N McArthur Way, Upland, CA 91786 · San Bernardino CountyPhone(909) 694-4020
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Ronald K. Shimmin is affiliated with 2 sites of care and 1 medical group
Dr. Shimmin's primary practice is Health Guard Inland in Upland, California. Dmand AI also links Dr. Shimmin to 1 group practice or clinic and 1 medical group, 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 K. Shimmin's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Shimmin practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Health Guard Inland | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ronald K. Shimmin is one of 1,526 general practice physicians in California
General practice is Dr. Shimmin's primary specialty in the NPI Registry, under taxonomy code 208D00000X. Dr. Shimmin is licensed in California.
Specialties and state licenses
- General practice, CaliforniaPrimary
General practice physicians near Dr. Shimmin
Counts of general practice physicians 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 K. Shimmin billed Medicare for 216 services in 2016
CMS data shows 216 Medicare services from Dr. Shimmin across 2 procedure codes in 2016, all of them office visits. Medicare paid $11,841 for them. Every service was in an office.
Dr. Shimmin compared with the California median for general practice physicians, 2016
- Dr. Shimmin
- California median
- Medicare services
- 216vs 26218% below
- Part D claims
- 219vs 19214% above
Medians across 1,114 general practice physicians in California with Dmand AI profiles that report each measure.
Dr. Shimmin's most billed Medicare procedure codes, 2016
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Shimmin and other general practice physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ronald K. Shimmin's patients have a median age of 78
Across all payers, Dmand AI patient panel data puts Dr. Shimmin's median patient age at 78, with 33% women.
Dr. Shimmin's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 78
Patient panel by sex, all payers
- Women33%
- Men67%
Source: Dmand AI Patient Panel Data
Dr. Ronald K. Shimmin wrote 219 Medicare Part D claims in 2016
In 2016, Dr. Shimmin wrote 219 Medicare Part D claims. They cover 16 drugs, with $4,057 in total drug cost.
Dr. Shimmin's most prescribed drugs by claims, 2016
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Ronald K. Shimmin received $86 in industry payments in 2016
CMS Open Payments shows 4 general payments to Dr. Shimmin from 3 drug and device companies in 2016. Food and beverage make up the largest share, 100% of the total. Merz North America, Inc. paid the most, $55.
Companies that paid Dr. Shimmin the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ronald K. Shimmin graduated from Universidad Autonoma de Guadalajara
Dr. Shimmin graduated from Universidad Autonoma de Guadalajara in 1979.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Ronald K. Shimmin'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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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 |
| 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 K. Shimmin
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 K. Shimmin's NPI number?
Dr. Ronald K. Shimmin's NPI number is 1225153315. It was assigned on March 20, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Ronald K. Shimmin?
Dr. Ronald K. Shimmin is a general practice physician in Upland, California. The primary specialty in the NPI Registry is General Practice Physician (taxonomy code 208D00000X).
Where does Dr. Ronald K. Shimmin practice?
Dr. Shimmin practices at 268 N McArthur Way, Upland, CA 91786. Dr. Shimmin's primary practice is Health Guard Inland in Upland, California. Dmand AI also links Dr. Shimmin to 1 group practice or clinic and 1 medical group.
What is Dr. Ronald K. Shimmin's office phone number?
The practice phone on file for Dr. Shimmin is (909) 694-4020.
What is Dr. Ronald K. Shimmin's medical license number?
Dr. Shimmin holds California license A37055.
Does Dr. Ronald K. Shimmin accept Medicare?
Yes. CMS data shows Dr. Shimmin billed Medicare for 216 services in 2016.
What services does Dr. Ronald K. Shimmin bill to Medicare?
In 2016, Dr. Shimmin's most billed Medicare services were office visit, established patient (99213) and office visit, established patient (99214).
Where did Dr. Ronald K. Shimmin go to medical school?
Dr. Shimmin graduated from Universidad Autonoma de Guadalajara in 1979.
What drugs does Dr. Ronald K. Shimmin prescribe most?
In 2016 Medicare Part D data, Dr. Shimmin's most prescribed drugs by claims were Levothyroxine Sodium, Losartan Potassium and Azithromycin.
Has Dr. Ronald K. Shimmin received payments from drug or device companies?
CMS Open Payments shows $86 in general payments to Dr. Shimmin from 3 companies from 2016 to 2016. The largest total came from Merz North America, Inc.
How long has Dr. Ronald K. Shimmin been practicing?
Dr. Shimmin graduated from medical school in 1979, 47 years ago.
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