Dr. Katherine W. Roller, MD
- Medicare services, 2017
- 460
- Part D claims, 2024
- 1,186
- Hospital affiliations
- 1
- Industry payments
- $983
- Medical groups
- 2
- Practice address
- 1200 B Gale Wilson Blvd, Fairfield, CA 94533
- Practice phone
- Call (707) 646-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Roller'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. Katherine W. Roller is a family medicine physician in Fairfield, California
Dr. Roller practices at NorthBay Medical Center in Fairfield, California, part of NorthBay Healthcare.
Dr. Roller's NPI, 1093755563, was assigned on June 6, 2006. Dr. Roller graduated from Cleveland Medical College, Homeopathic in 1995. Dr. Roller holds California license A62718.
- NPI
- 1093755563NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2860497708
- NPI enumeration date
- June 6, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (707) 646-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 57
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Katherine W. Roller practices at NorthBay Medical Center in Fairfield, California
Dr. Roller's primary practice is NorthBay Medical Center, at 1200 B Gale Wilson Blvd, Fairfield, CA 94533 in Solano County. The practice phone is (707) 646-5000.
- NorthBay Medical Center1200 B Gale Wilson Blvd, Fairfield, CA 94533 · Solano CountyPhone(707) 646-5000
Source: Dmand AI Affiliation Data
Dr. Katherine W. Roller is affiliated with 1 site of care and 2 medical groups
Dr. Roller's primary practice is NorthBay Medical Center in Fairfield, California, part of NorthBay Healthcare. The medical group on file is NorthBay Health. Dmand AI also links Dr. Roller to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Katherine W. Roller's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Roller practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| NorthBay Medical Center | Available with a free account |
| +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 NorthBay Healthcare and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Katherine W. Roller is one of 15,680 family medicine physicians in California
Family medicine is Dr. Roller's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Roller is board certified in family medicine by the American Board of Family Medicine. Dr. Roller is licensed in California.
Specialties and state licenses
- Family medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists acute skin infection, ADHD, anxiety, bladder disease, chronic diabetes, chronic hypertension, diabetic emergency and gastrointestinal bleeding among the conditions Dr. Roller treats.
Family medicine physicians near Dr. Roller
Counts of family medicine 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. Katherine W. Roller billed Medicare for 460 services in 2017
CMS data shows 460 Medicare services from Dr. Roller across 7 procedure codes in 2017. Medicare paid $27,802 for them. Every service was in an office.
Dr. Roller's Medicare services by type, 2016 to 2017
- 2016
- 2017
- Office and hospital visits
- 2016: 4782017: 39018%
- Lab and pathology
- 2016: 472017: 5415%
- Tests and treatments
- 2016: 682017: 1676%
- Other services
- 2016: 592017: 0100%
Dr. Roller compared with the California median for family medicine physicians, 2017
- Dr. Roller
- California median
- Medicare services
- 460vs 24687% above
- Part D claims
- 880vs 8336% above
Medians across 15,349 family medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Roller'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.
Need commercial claims for Dr. Roller?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Roller and other family medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Katherine W. Roller's patients have a median age of 50
Across all payers, Dmand AI patient panel data puts Dr. Roller's median patient age at 50, with 73% women.
Dr. Roller's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 50
Patient panel by sex, all payers
- Women73%
- Men26%
Source: Dmand AI Patient Panel Data
Dr. Katherine W. Roller wrote 1,186 Medicare Part D claims in 2024
In 2024, Dr. Roller wrote 1,186 Medicare Part D claims for 129 patients. 83% of them were for generic drugs. CMS names the drug for 880 of them, across 38 drugs with 11 or more claims each, at $82,175 in total drug cost. In 2023, CMS named 870 claims across 30 drugs.
Dr. Roller's Part D claims by kind of drug, 2024
- Generic979 claims83%
- Brand-name and other207 claims17%
Dr. Roller's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Roller's Part D claims, 2024
- Opioids9%111 of 1,186 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 8702024: 8801%
Drugs named by CMS: 38 in 2024, 30 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Katherine W. Roller takes part in Medicare
Dr. Roller accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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. Katherine W. Roller received $983 in industry payments from 2016 to 2025
CMS Open Payments shows 23 general payments to Dr. Roller from 8 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Boehringer Ingelheim Pharmaceuticals, Inc. paid the most, $286.
General payments to Dr. Roller by program year, 2016 to 2025
Companies that paid Dr. Roller the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Katherine W. Roller graduated from Cleveland Medical College, Homeopathic
Dr. Roller graduated from Cleveland Medical College, Homeopathic in 1995.
- Medical school
- Board certified in family medicine
Source: Dmand AI Professional Profile Data
Dr. Katherine W. Roller accepts plans from 12 insurance carriers
Dr. Roller is in network with 12 carriers, including Elevance, Aetna and United Healthcare. PPO plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Elevance
- Aetna
- United Healthcare
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Humana
- Alliant Health Plans
- Aspirus Health Plan
- +4 more carriersWith a free account
Plan types Dr. Roller accepts, by number of carriers
- PPO7
- HMO6
- Medicare5
- EPO4
- POS4
Source: Dmand AI Insurance Network Data
Sources for Dr. Katherine W. Roller'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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - 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) |
| 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. Katherine W. Roller
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. Katherine W. Roller's NPI number?
Dr. Katherine W. Roller's NPI number is 1093755563. It was assigned on June 6, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Katherine W. Roller?
Dr. Katherine W. Roller is a family medicine physician in Fairfield, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Katherine W. Roller practice?
Dr. Roller practices at 1200 B Gale Wilson Blvd, Fairfield, CA 94533. Dr. Roller's primary practice is NorthBay Medical Center in Fairfield, California, part of NorthBay Healthcare. Dmand AI also links Dr. Roller to 1 medical group.
What is Dr. Katherine W. Roller's office phone number?
The practice phone on file for Dr. Roller is (707) 646-5000.
What is Dr. Katherine W. Roller's medical license number?
Dr. Roller holds California license A62718.
Which hospitals is Dr. Katherine W. Roller affiliated with?
Dr. Roller practices at NorthBay Medical Center in Fairfield, California.
What medical group is Dr. Katherine W. Roller part of?
Dr. Roller is linked to NorthBay Health. Dmand AI links Dr. Roller to 1 more medical group.
Does Dr. Katherine W. Roller accept Medicare?
Yes. CMS data shows Dr. Roller billed Medicare for 460 services in 2017, and Dr. Roller accepts Medicare assignment.
Is Dr. Katherine W. Roller board certified?
Yes. Dr. Roller is board certified in family medicine by the American Board of Family Medicine.
What services does Dr. Katherine W. Roller bill to Medicare?
In 2017, Dr. Roller's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and lab and pathology test (83036).
Show 5 more questionsShow fewer questions
Where did Dr. Katherine W. Roller go to medical school?
Dr. Roller graduated from Cleveland Medical College, Homeopathic in 1995.
What drugs does Dr. Katherine W. Roller prescribe most?
In 2024 Medicare Part D data, Dr. Roller's most prescribed drugs by claims were Atorvastatin Calcium, Metformin HCl and Hydrocodone-Acetaminophen.
Has Dr. Katherine W. Roller received payments from drug or device companies?
CMS Open Payments shows $983 in general payments to Dr. Roller from 8 companies from 2016 to 2025. The largest total came from Boehringer Ingelheim Pharmaceuticals, Inc.
How long has Dr. Katherine W. Roller been practicing?
Dr. Roller graduated from medical school in 1995, 31 years ago.
What insurance does Dr. Katherine W. Roller accept?
Dr. Roller is in network with 12 carriers, including Elevance, Aetna and United Healthcare. PPO plans come from the most carriers, 7. Check the plan with the practice before a visit.
Selling to family medicine practices?
See family medicine physicians 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