Dr. Robert Rogers Schaefer, MD
- Medicare services, 2017
- 1,762
- Part D claims, 2018
- 519
- Industry payments
- $2,910
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 500 Doyle Park Dr, Santa Rosa, CA 95405
- Practice phone
- Call (707) 544-3411
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Internal Medicine Associates Of Santa Rosa Medical Group
Primary care practice · Santa Rosa, California
Find Dr. Schaefer's professional email, personal email and mobile number
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Dr. Robert Rogers Schaefer is an internist in Santa Rosa, California
Dr. Schaefer practices at Internal Medicine Associates Of Santa Rosa Medical Group in Santa Rosa, California.
Dr. Schaefer's NPI, 1346233632, was assigned on August 23, 2005. Dr. Schaefer graduated from Pritzker School of Medicine in 1969. Dr. Schaefer's California license number on file is G22776.
- NPI
- 1346233632NPI Registry (opens in a new tab)
- NPI enumeration date
- August 23, 2005
- NPI status
- Active
- Practice phone
- (707) 544-3411
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1969
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Robert Rogers Schaefer practices at 2 locations in Santa Rosa, California
Dr. Schaefer's primary practice is Internal Medicine Associates of Santa Rosa Medical Group, at 500 Doyle Park Dr, Santa Rosa, CA 95405. The practice phone is (707) 544-3411. The NPI Registry lists Dr. Schaefer's practice address as 1165 Montgomery Dr, Santa Rosa, CA 95405.
- Internal Medicine Associates of Santa Rosa Medical GroupPrimary500 Doyle Park Dr, Santa Rosa, CA 95405Phone(707) 544-3411
- NPI Registry address1165 Montgomery Dr, Santa Rosa, CA 95405 · Sonoma CountyPhone(707) 544-3411
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Robert Rogers Schaefer is affiliated with 1 site of care and 1 medical group
Dr. Schaefer's primary practice is Internal Medicine Associates Of Santa Rosa Medical Group in Santa Rosa, California. Dmand AI also links Dr. Schaefer to 1 medical group, 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. Robert Rogers Schaefer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Schaefer practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Internal Medicine Associates Of Santa Rosa Medical Group | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Robert Rogers Schaefer is one of 16,751 internists in California
Internal medicine is Dr. Schaefer's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Schaefer has a license on file in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Schaefer
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. Robert Rogers Schaefer billed Medicare for 1,762 services in 2017
CMS data shows 1,762 Medicare services from Dr. Schaefer across 11 procedure codes in 2017. Medicare paid $46,588 for them. Every service was in an office.
Dr. Schaefer's Medicare services by type, 2016 to 2017
- 2016
- 2017
- Drugs given in the office
- 2016: 2,0932017: 96054%
- Office and hospital visits
- 2016: 1,2332017: 55655%
- Lab and pathology
- 2016: 1392017: 10227%
- Tests and treatments
- 2016: 3652017: 7280%
- Other services
- 2016: 3292017: 7278%
Dr. Schaefer compared with the California median for internists, 2017
- Dr. Schaefer
- California median
- Medicare services
- 1,762vs 3614.9 times
- Part D claims
- 519vs 42123% above
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Schaefer's most billed Medicare procedure codes, 2017
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. Schaefer and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Robert Rogers Schaefer's patients have a median age of 81
Across all payers, Dmand AI patient panel data puts Dr. Schaefer's median patient age at 81, with 50% women.
Dr. Schaefer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 81
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. Robert Rogers Schaefer wrote 519 Medicare Part D claims in 2018
In 2018, Dr. Schaefer wrote 519 Medicare Part D claims. They cover 23 drugs, with $21,361 in total drug cost. In 2017, CMS named 4,350 claims across 94 drugs.
Dr. Schaefer's most prescribed drugs by claims, 2018
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, 2017 to 2018
- 2017
- 2018
- Claims for drugs CMS names
- 2017: 4,3502018: 51988%
Drugs named by CMS: 23 in 2018, 94 in 2017.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Robert Rogers Schaefer received $2,910 in industry payments from 2016 to 2019
CMS Open Payments shows 183 general payments to Dr. Schaefer from 25 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 96% of the total. Amgen Inc. paid the most, $509.
General payments to Dr. Schaefer by program year, 2016 to 2019
General payments to Dr. Schaefer by kind, 2016 to 2019
- Food and beverage$2,79196%
- Education$993%
- Consulting fees$201%
Companies that paid Dr. Schaefer the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Robert Rogers Schaefer has 1 award and honors on record
Dmand AI lists 1 award for Dr. Schaefer, most recently CMS Stage 1 EHR in 2012.
Awards and honors for Dr. Schaefer
- 2012
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Robert Rogers Schaefer graduated from Pritzker School of Medicine
Dr. Schaefer graduated from Pritzker School of Medicine in 1969.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Robert Rogers Schaefer'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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Robert Rogers Schaefer
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What is Dr. Robert Rogers Schaefer's NPI number?
Dr. Robert Rogers Schaefer's NPI number is 1346233632. It was assigned on August 23, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert Rogers Schaefer?
Dr. Robert Rogers Schaefer is an internist in Santa Rosa, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Robert Rogers Schaefer practice?
Dr. Schaefer practices at 500 Doyle Park Dr, Santa Rosa, CA 95405. Dr. Schaefer also practices at 1165 Montgomery Dr, Santa Rosa, CA 95405. Dr. Schaefer's primary practice is Internal Medicine Associates Of Santa Rosa Medical Group in Santa Rosa, California. Dmand AI also links Dr. Schaefer to 1 medical group.
What is Dr. Robert Rogers Schaefer's office phone number?
The practice phone on file for Dr. Schaefer is (707) 544-3411.
What is Dr. Robert Rogers Schaefer's medical license number?
Dr. Schaefer's California license number on file is G22776.
Does Dr. Robert Rogers Schaefer accept Medicare?
Yes. CMS data shows Dr. Schaefer billed Medicare for 1,762 services in 2017.
What services does Dr. Robert Rogers Schaefer bill to Medicare?
In 2017, Dr. Schaefer's most billed Medicare services were injected or infused drug (J0897), office visit, established patient (99213) and lab and pathology test (85610).
Where did Dr. Robert Rogers Schaefer go to medical school?
Dr. Schaefer graduated from Pritzker School of Medicine in 1969.
What drugs does Dr. Robert Rogers Schaefer prescribe most?
In 2018 Medicare Part D data, Dr. Schaefer's most prescribed drugs by claims were Levothyroxine Sodium, Atorvastatin Calcium and Potassium Chloride.
Has Dr. Robert Rogers Schaefer received payments from drug or device companies?
CMS Open Payments shows $2,910 in general payments to Dr. Schaefer from 25 companies from 2016 to 2019. The largest total came from Amgen Inc.
How long has Dr. Robert Rogers Schaefer been practicing?
Dr. Schaefer graduated from medical school in 1969, 57 years ago.
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