Dr. Rolf D. Knapp, DO
- Medicare services, 2024
- 358
- Medicare patients, 2024
- 134
- Part D claims, 2024
- 5,667
- Industry payments
- $115
- Affiliated sites
- 3
- Practice address
- 2540 N Santiago Blvd, Orange, CA 92867-1862
- Practice phone
- Call (714) 921-1030
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Optumcare Medical Group
Multi-specialty group site · Orange, California
Find Dr. Knapp'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. Rolf D. Knapp is a family medicine physician in Orange, California
Dr. Knapp practices at Optumcare Medical Group in Orange, California.
Dr. Knapp's NPI, 1053355982, was assigned on June 14, 2006. Dr. Knapp graduated from WesternU College of Osteopathic Medicine of the Pacific in 1987. Dr. Knapp holds California license 20A5513.
- NPI
- 1053355982NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3779562822
- NPI enumeration date
- June 14, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (714) 921-1030
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Rolf D. Knapp practices at Optumcare Medical Group in Orange, California
Dr. Knapp's primary practice is Optumcare Medical Group, at 2540 N Santiago Blvd, Orange, CA 92867-1862. The practice phone is (714) 921-1030.
- Optumcare Medical Group2540 N Santiago Blvd, Orange, CA 92867-1862Phone(714) 921-1030
Source: Dmand AI Affiliation Data
Dr. Rolf D. Knapp is affiliated with 3 sites of care and 3 medical groups
Dr. Knapp's primary practice is Optumcare Medical Group in Orange, California. The medical group on file is OptumCare Medical Group. Dmand AI also links Dr. Knapp to 2 more group practices and clinics and 2 medical groups, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Rolf D. Knapp's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Knapp practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Optumcare Medical Group | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Rolf D. Knapp is one of 15,680 family medicine physicians in California
Family medicine is Dr. Knapp's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Knapp is licensed in California.
Specialties and state licenses
- Family medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists arthritis, lower back pain and thoracic spine disorders among the conditions Dr. Knapp treats.
Family medicine physicians near Dr. Knapp
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. Rolf D. Knapp billed Medicare for 358 services in 2024
CMS data shows 358 Medicare services from Dr. Knapp across 6 procedure codes in 2024, for 134 Medicare patients. Medicare paid $29,733 for them. Every service was in an office.
Dr. Knapp's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2952024: 24816%
- Other services
- 2023: 1042024: 9410%
- Tests and treatments
- 2023: 142024: 1614%
Dr. Knapp compared with the California median for family medicine physicians, 2024
- Dr. Knapp
- California median
- Medicare services
- 358vs 24646% above
- Medicare patients
- 134vs 11814% above
- Part D claims
- 4,987vs 8336.0 times
Medians across 15,349 family medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Knapp'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. Knapp 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. Rolf D. Knapp treated 134 Medicare patients in 2024, average age 74
CMS counts 134 Medicare patients who saw Dr. Knapp in 2024. The largest group is 65 to 74, with 66 patients. 75% of them have high cholesterol, and 57% have high blood pressure. Their average risk score is 0.86, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Knapp's median patient age at 62, with 45% women.
Dr. Knapp's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Knapp's Medicare patients by sex, 2024
- Women7153%
- Men6347%
Chronic conditions among Dr. Knapp's Medicare patients, 2024
- High cholesterol75%
- High blood pressure57%
- Arthritis39%
- Ischemic heart disease30%
- Anxiety22%
- Chronic kidney disease19%
- Diabetes19%
- Mood disorders18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Knapp'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
- Women45%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Rolf D. Knapp wrote 5,667 Medicare Part D claims in 2024
In 2024, Dr. Knapp wrote 5,667 Medicare Part D claims for 384 patients. 87% of them were for generic drugs. CMS names the drug for 4,987 of them, across 119 drugs with 11 or more claims each, at $429,522 in total drug cost. In 2023, CMS named 4,547 claims across 112 drugs.
Dr. Knapp's Part D claims by kind of drug, 2024
- Generic4,943 claims87%
- Brand-name698 claims12%
- Other26 claims0%
Dr. Knapp'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. Knapp's Part D claims, 2024
- Opioids9%529 of 5,667 claims
- Antibiotics3%163 of 5,667 claims
- Antipsychotics, patients 65 and over0%15 of 5,667 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: 4,5472024: 4,98710%
Drugs named by CMS: 119 in 2024, 112 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. Rolf D. Knapp offers telehealth to Medicare patients
Dr. Knapp accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Knapp as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Rolf D. Knapp received $115 in industry payments from 2016 to 2021
CMS Open Payments shows 7 general payments to Dr. Knapp from 3 drug and device companies from 2016 to 2021. Food and beverage make up the largest share, 100% of the total. GlaxoSmithKline, LLC. paid the most, $50.
General payments to Dr. Knapp by program year, 2016 to 2021
Companies that paid Dr. Knapp the most, 2016 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Rolf D. Knapp graduated from WesternU College of Osteopathic Medicine of the Pacific
Dr. Knapp graduated from WesternU College of Osteopathic Medicine of the Pacific in 1987. Dr. Knapp is a member of AOA.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Rolf D. Knapp accepts plans from 10 insurance carriers
Dr. Knapp is in network with 10 carriers, including Aetna, Elevance and United Healthcare. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Aetna
- Elevance
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- +2 more carriersWith a free account
Plan types Dr. Knapp accepts, by number of carriers
- Medicare6
- PPO6
- HMO5
- POS5
- EPO3
Source: Dmand AI Insurance Network Data
Sources for Dr. Rolf D. Knapp'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 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) |
| 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. Rolf D. Knapp
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. Rolf D. Knapp's NPI number?
Dr. Rolf D. Knapp's NPI number is 1053355982. It was assigned on June 14, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Rolf D. Knapp?
Dr. Rolf D. Knapp is a family medicine physician in Orange, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Rolf D. Knapp practice?
Dr. Knapp practices at 2540 N Santiago Blvd, Orange, CA 92867-1862. Dr. Knapp's primary practice is Optumcare Medical Group in Orange, California. Dmand AI also links Dr. Knapp to 2 group practices and clinics and 2 medical groups.
What is Dr. Rolf D. Knapp's office phone number?
The practice phone on file for Dr. Knapp is (714) 921-1030.
What is Dr. Rolf D. Knapp's medical license number?
Dr. Knapp holds California license 20A5513.
What medical group is Dr. Rolf D. Knapp part of?
Dr. Knapp is linked to OptumCare Medical Group. Dmand AI links Dr. Knapp to 2 more medical groups.
Does Dr. Rolf D. Knapp accept Medicare?
Yes. CMS data shows Dr. Knapp billed Medicare for 358 services in 2024, and Dr. Knapp accepts Medicare assignment.
Does Dr. Rolf D. Knapp offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Knapp as offering telehealth services.
How many Medicare patients does Dr. Rolf D. Knapp see?
CMS counts 134 Medicare patients who saw Dr. Knapp in 2024, with an average age of 74.
What services does Dr. Rolf D. Knapp bill to Medicare?
In 2024, Dr. Knapp's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and medicare service (G0439).
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Where did Dr. Rolf D. Knapp go to medical school?
Dr. Knapp graduated from WesternU College of Osteopathic Medicine of the Pacific in 1987.
What drugs does Dr. Rolf D. Knapp prescribe most?
In 2024 Medicare Part D data, Dr. Knapp's most prescribed drugs by claims were Levothyroxine Sodium, Hydrocodone-Acetaminophen and Atorvastatin Calcium.
Has Dr. Rolf D. Knapp received payments from drug or device companies?
CMS Open Payments shows $115 in general payments to Dr. Knapp from 3 companies from 2016 to 2021. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. Rolf D. Knapp been practicing?
Dr. Knapp graduated from medical school in 1987, 39 years ago.
What insurance does Dr. Rolf D. Knapp accept?
Dr. Knapp is in network with 10 carriers, including Aetna, Elevance and United Healthcare. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
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