Dr. Constanze S. Rayhrer, MD
- Medicare services, 2024
- 234
- Medicare patients, 2024
- 153
- Part D claims, 2024
- 240
- Hospital affiliations
- 2
- Industry payments
- $5,623
- Practice address
- 147 North Brent Street, Ventura, CA 93003
- Practice phone
- Call (805) 652-5011
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Rayhrer's professional email, personal email and mobile number
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Dr. Constanze S. Rayhrer is a general surgeon in Ventura, California
Dr. Rayhrer practices at Community Memorial Hospital - Ventura in Ventura, California, part of Community Memorial Healthcare.
Dr. Rayhrer's NPI, 1730286402, was assigned on September 17, 2006. Dr. Rayhrer graduated from Boston University School of Medicine in 1992. Dr. Rayhrer holds Indiana license 01095740A.
- NPI
- 1730286402NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5294627337
- NPI enumeration date
- September 17, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (805) 652-5011
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Constanze S. Rayhrer practices at Community Memorial Hospital - Ventura in Ventura, California
Dr. Rayhrer's primary practice is Community Memorial Hospital - Ventura, at 147 North Brent Street, Ventura, CA 93003 in Ventura County. The practice phone is (805) 652-5011.
- Community Memorial Hospital - Ventura147 North Brent Street, Ventura, CA 93003 · Ventura CountyPhone(805) 652-5011
Source: Dmand AI Affiliation Data
Dr. Constanze S. Rayhrer is affiliated with 3 sites of care and 2 medical groups
Dr. Rayhrer's primary practice is Community Memorial Hospital - Ventura in Ventura, California, part of Community Memorial Healthcare. Dr. Rayhrer is also affiliated with Franciscan Health Lafayette. The medical group on file is Franciscan Physician Network. Dmand AI also links Dr. Rayhrer to 1 more group practice or clinic 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. Constanze S. Rayhrer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Rayhrer practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Community Memorial Hospital - Ventura | Available with a free account |
| +2 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 Community Memorial Healthcare and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Constanze S. Rayhrer is one of 2,926 general surgeons in California
Surgery is Dr. Rayhrer's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dmand AI has Dr. Rayhrer's licenses on file in 2 states: Indiana and California.
Specialties and state licenses
- Surgery, IndianaPrimary
- California license
General surgeons near Dr. Rayhrer
Counts of general surgeons 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. Constanze S. Rayhrer billed Medicare for 234 services in 2024
CMS data shows 234 Medicare services from Dr. Rayhrer across 7 procedure codes in 2024, for 153 Medicare patients. Medicare paid $25,244 for them.
Dr. Rayhrer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1942024: 1893%
- Surgery
- 2023: 822024: 4545%
- Other services
- 2023: 122024: 0100%
Where Dr. Rayhrer's Medicare services took place, 2024
- In an office18981%
- In a facility4519%
Dr. Rayhrer compared with the California median for general surgeons, 2024
- Dr. Rayhrer
- California median
- Medicare services
- 234vs 16641% above
- Medicare patients
- 153vs 12126% above
- Part D claims
- 157vs 344.6 times
Medians across 2,606 general surgeons in California with Dmand AI profiles that report each measure.
Dr. Rayhrer'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. Rayhrer and other general surgeons in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Constanze S. Rayhrer treated 153 Medicare patients in 2024, average age 73
CMS counts 153 Medicare patients who saw Dr. Rayhrer in 2024. The largest group is 65 to 74, with 77 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 22% are also on Medicaid. Their average risk score is 1.31, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Rayhrer's median patient age at 67, with 98% women.
Dr. Rayhrer's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Rayhrer's Medicare patients by sex, 2024
- Women12078%
- Men3322%
Chronic conditions among Dr. Rayhrer's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis45%
- Cancer34%
- Anxiety33%
- Mood disorders32%
- Depression29%
- Diabetes22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Rayhrer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women98%
- Men2%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Constanze S. Rayhrer wrote 240 Medicare Part D claims in 2024
In 2024, Dr. Rayhrer wrote 240 Medicare Part D claims for 103 patients. 96% of them were for generic drugs. CMS names the drug for 157 of them, across 7 drugs with 11 or more claims each, at $3,768 in total drug cost. In 2023, CMS named 142 claims across 6 drugs.
Dr. Rayhrer's Part D claims by kind of drug, 2024
- Generic230 claims96%
- Brand-name and other10 claims4%
Dr. Rayhrer'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. Rayhrer's Part D claims, 2024
- Opioids18%44 of 240 claims
- Antibiotics13%32 of 240 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: 1422024: 15711%
Drugs named by CMS: 7 in 2024, 6 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
Dr. Constanze S. Rayhrer ranks in the 92nd percentile for mastectomy in Medicare
Dr. Rayhrer accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 43 procedures of mastectomy by Dr. Rayhrer, more than 92% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Rayhrer ranks in Medicare procedure volume
- Mastectomy
- 92nd percentile43 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Skin biopsy: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Constanze S. Rayhrer received $5,623 in industry payments from 2016 to 2025
CMS Open Payments shows 75 general payments to Dr. Rayhrer from 26 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 52% of the total. Intuitive Surgical, Inc. paid the most, $2,999.
General payments to Dr. Rayhrer by program year, 2016 to 2025
General payments to Dr. Rayhrer by kind, 2016 to 2025
- Food and beverage$2,92852%
- Travel and lodging$1,54227%
- Education$76814%
- Gifts$2695%
- Other$1152%
Companies that paid Dr. Rayhrer 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. Constanze S. Rayhrer graduated from Boston University School of Medicine
Dr. Rayhrer graduated from Boston University School of Medicine in 1992.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Constanze S. Rayhrer'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) |
| 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)Doctors and Clinicians Utilization Data (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. Constanze S. Rayhrer
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. Constanze S. Rayhrer's NPI number?
Dr. Constanze S. Rayhrer's NPI number is 1730286402. It was assigned on September 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Constanze S. Rayhrer?
Dr. Constanze S. Rayhrer is a general surgeon in Ventura, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Constanze S. Rayhrer practice?
Dr. Rayhrer practices at 147 North Brent Street, Ventura, CA 93003. Dr. Rayhrer's primary practice is Community Memorial Hospital - Ventura in Ventura, California, part of Community Memorial Healthcare. Dmand AI also links Dr. Rayhrer to 1 group practice or clinic and 1 medical group.
What is Dr. Constanze S. Rayhrer's office phone number?
The practice phone on file for Dr. Rayhrer is (805) 652-5011.
What is Dr. Constanze S. Rayhrer's medical license number?
Dr. Rayhrer holds Indiana license 01095740A, one of the licenses on file in 2 states.
Which states has Dr. Constanze S. Rayhrer been licensed in?
Dmand AI has state licenses on file for Dr. Rayhrer in Indiana and California.
Which hospitals is Dr. Constanze S. Rayhrer affiliated with?
Dr. Rayhrer practices at Community Memorial Hospital - Ventura in Ventura, California. Dr. Rayhrer is also affiliated with Franciscan Health Lafayette.
What medical group is Dr. Constanze S. Rayhrer part of?
Dr. Rayhrer is linked to Franciscan Physician Network. Dmand AI links Dr. Rayhrer to 1 more medical group.
Does Dr. Constanze S. Rayhrer accept Medicare?
Yes. CMS data shows Dr. Rayhrer billed Medicare for 234 services in 2024, and Dr. Rayhrer accepts Medicare assignment.
How many Medicare patients does Dr. Constanze S. Rayhrer see?
CMS counts 153 Medicare patients who saw Dr. Rayhrer in 2024, with an average age of 73.
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What services does Dr. Constanze S. Rayhrer bill to Medicare?
In 2024, Dr. Rayhrer's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and office visit, new patient (99204).
Where did Dr. Constanze S. Rayhrer go to medical school?
Dr. Rayhrer graduated from Boston University School of Medicine in 1992.
What drugs does Dr. Constanze S. Rayhrer prescribe most?
In 2024 Medicare Part D data, Dr. Rayhrer's most prescribed drugs by claims were Hydrocodone-Acetaminophen, Sod Sulf-Potass Sulf-Mag Sulf and Sulindac.
Has Dr. Constanze S. Rayhrer received payments from drug or device companies?
CMS Open Payments shows $5,623 in general payments to Dr. Rayhrer from 26 companies from 2016 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Constanze S. Rayhrer been practicing?
Dr. Rayhrer graduated from medical school in 1992, 34 years ago.
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