Dr. Carol R. Schaffer, MD
- Medicare services, 2024
- 232
- Medicare patients, 2024
- 234
- MIPS score, 2024
- 90
- Hospital affiliations
- 2
- Industry payments
- $125
- Practice address
- 2540 East St, Concord, CA 94520
- Practice phone
- Call (925) 682-8200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Schaffer'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. Carol R. Schaffer is a hospitalist in Concord, California
Dr. Schaffer practices at Concord Medical Center in Concord, California, part of John Muir Health.
Dr. Schaffer's NPI, 1871513226, was assigned on July 20, 2006. Dr. Schaffer graduated from University of Rochester Medical Center in 1994. Dr. Schaffer holds California license A55823.
- NPI
- 1871513226NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8628084324
- NPI enumeration date
- July 20, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (925) 682-8200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Carol R. Schaffer practices at Concord Medical Center in Concord, California
Dr. Schaffer's primary practice is Concord Medical Center, at 2540 East St, Concord, CA 94520 in Contra Costa County. The practice phone is (925) 682-8200.
- Concord Medical Center2540 East St, Concord, CA 94520 · Contra Costa CountyPhone(925) 682-8200
Source: Dmand AI Affiliation Data
Dr. Carol R. Schaffer is affiliated with 4 sites of care and 2 medical groups
Dr. Schaffer's primary practice is Concord Medical Center in Concord, California, part of John Muir Health. Dr. Schaffer is also affiliated with Contra Costa Regional Medical Center. The medical group on file is John Muir Health. Dmand AI also links Dr. Schaffer to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Carol R. Schaffer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Schaffer practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Concord Medical Center | Available with a free account |
| +3 more sites and 1 medical group | 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 John Muir Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Carol R. Schaffer is one of 3,186 hospitalists in California
Hospitalist is Dr. Schaffer's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Schaffer is board certified in internal medicine by the American Board of Internal Medicine. Dr. Schaffer is licensed in California.
Specialties and state licenses
- Hospitalist, CaliforniaPrimary
Hospitalists near Dr. Schaffer
Counts of hospitalists 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. Carol R. Schaffer billed Medicare for 232 services in 2024
CMS data shows 232 Medicare services from Dr. Schaffer across 2 procedure codes in 2024, for 234 Medicare patients. Medicare paid $32,780 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Schaffer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2282024: 2322%
Dr. Schaffer compared with the California median for hospitalists, 2024
- Dr. Schaffer
- California median
- Medicare services
- 232vs 43046% below
- Medicare patients
- 234vs 20116% above
Medians across 2,991 hospitalists in California with Dmand AI profiles that report each measure.
Dr. Schaffer's most billed Medicare procedure codes, 2024
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. Schaffer and other hospitalists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Carol R. Schaffer treated 234 Medicare patients in 2024, average age 75
CMS counts 234 Medicare patients who saw Dr. Schaffer in 2024. The largest group is 75 to 84, with 77 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 47% are also on Medicaid. Their average risk score is 2.90, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Schaffer's median patient age at 62, with 46% women.
Dr. Schaffer's Medicare patients by age, 2024
Dr. Schaffer's Medicare patients by sex, 2024
- Women12955%
- Men10545%
Chronic conditions among Dr. Schaffer's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease54%
- Diabetes52%
- Arthritis50%
- Mood disorders50%
- Heart failure49%
- Depression45%
Share of Medicare patients with each condition. A patient can have several.
Dr. Schaffer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women46%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Carol R. Schaffer scored 90 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 90 out of 100 for Dr. Schaffer for performance year 2024, reported as part of a group. Dr. Schaffer accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Schaffer's MIPS scores, performance year 2024
- 90of 100Final score
- 89.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 74of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Carol R. Schaffer received $125 in industry payments in 2016
CMS Open Payments shows 1 general payment to Dr. Schaffer from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $125.
Companies that paid Dr. Schaffer 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. Carol R. Schaffer graduated from University of Rochester Medical Center
Dr. Schaffer graduated from University of Rochester Medical Center in 1994. Dr. Schaffer is a member of ACP.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Carol R. Schaffer accepts plans from 12 insurance carriers
Dr. Schaffer is in network with 12 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and HCSC. PPO plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Aetna
- Blue Cross Blue Shield of Massachusetts
- Elevance
- Regence Health Plans
- Alliant Health Plans
- +4 more carriersWith a free account
Plan types Dr. Schaffer accepts, by number of carriers
- PPO7
- HMO6
- Medicare6
- EPO3
- POS2
Source: Dmand AI Insurance Network Data
Sources for Dr. Carol R. Schaffer'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 Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (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. Carol R. Schaffer
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. Carol R. Schaffer's NPI number?
Dr. Carol R. Schaffer's NPI number is 1871513226. It was assigned on July 20, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Carol R. Schaffer?
Dr. Carol R. Schaffer is a hospitalist in Concord, California. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Carol R. Schaffer practice?
Dr. Schaffer practices at 2540 East St, Concord, CA 94520. Dr. Schaffer's primary practice is Concord Medical Center in Concord, California, part of John Muir Health. Dmand AI also links Dr. Schaffer to 2 group practices and clinics and 1 medical group.
What is Dr. Carol R. Schaffer's office phone number?
The practice phone on file for Dr. Schaffer is (925) 682-8200.
What is Dr. Carol R. Schaffer's medical license number?
Dr. Schaffer holds California license A55823.
Which hospitals is Dr. Carol R. Schaffer affiliated with?
Dr. Schaffer practices at Concord Medical Center in Concord, California. Dr. Schaffer is also affiliated with Contra Costa Regional Medical Center.
What medical group is Dr. Carol R. Schaffer part of?
Dr. Schaffer is linked to John Muir Health. Dmand AI links Dr. Schaffer to 1 more medical group.
Does Dr. Carol R. Schaffer accept Medicare?
Yes. CMS data shows Dr. Schaffer billed Medicare for 232 services in 2024, and Dr. Schaffer accepts Medicare assignment.
What is Dr. Carol R. Schaffer's MIPS score?
Dr. Schaffer's MIPS final score for performance year 2024 is 90 out of 100, reported as part of a group.
How many Medicare patients does Dr. Carol R. Schaffer see?
CMS counts 234 Medicare patients who saw Dr. Schaffer in 2024, with an average age of 75.
Show 6 more questionsShow fewer questions
Is Dr. Carol R. Schaffer board certified?
Yes. Dr. Schaffer is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Carol R. Schaffer bill to Medicare?
In 2024, Dr. Schaffer's most billed Medicare services were hospital inpatient care (99223) and hospital inpatient care (99222).
Where did Dr. Carol R. Schaffer go to medical school?
Dr. Schaffer graduated from University of Rochester Medical Center in 1994.
Has Dr. Carol R. Schaffer received payments from drug or device companies?
CMS Open Payments shows $125 in general payments to Dr. Schaffer from 1 company from 2016 to 2016. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Carol R. Schaffer been practicing?
Dr. Schaffer graduated from medical school in 1994, 32 years ago.
What insurance does Dr. Carol R. Schaffer accept?
Dr. Schaffer is in network with 12 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and HCSC. PPO plans come from the most carriers, 7. Check the plan with the practice before a visit.
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