Dr. Andrew Nathan Knoll, MD
- Medicare services, 2024
- 6,336
- Medicare patients, 2024
- 2,740
- Part D claims, 2017
- 12
- MIPS score, 2024
- 85
- Hospital affiliations
- 7
- Practice address
- 1031 W Chapman Ave, Orange, CA 92868
- Practice phone
- Call (714) 538-6731
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Moran Rowen and Dorsey Inc
Orange, California
Find Dr. Knoll'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. Andrew Nathan Knoll is a diagnostic radiologist in Orange, California
Dr. Knoll practices at Moran Rowen and Dorsey Inc in Orange, California.
Dr. Knoll's NPI, 1801075189, was assigned on November 2, 2007. Dr. Knoll graduated from New York Medical College in 2004. Dr. Knoll holds California license A93913.
- NPI
- 1801075189NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3476606997
- NPI enumeration date
- November 2, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (714) 538-6731
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Andrew Nathan Knoll practices at Moran Rowen and Dorsey Inc in Orange, California
Dr. Knoll's primary practice is Moran Rowen and Dorsey Inc, at 1031 W Chapman Ave, Orange, CA 92868 in Orange County. The practice phone is (714) 538-6731.
- Moran Rowen and Dorsey Inc1031 W Chapman Ave, Orange, CA 92868 · Orange CountyPhone(714) 538-6731
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Andrew Nathan Knoll is affiliated with 12 sites of care and 11 medical groups
Dr. Knoll's primary practice is Moran Rowen and Dorsey Inc in Orange, California. Dr. Knoll is also affiliated with Providence St. Joseph Hospital Orange. The medical group on file is Moran, Rowen & Dorsey (MRD Imaging). Dmand AI also links Dr. Knoll to 6 more hospitals, 10 medical groups, 3 group practices and clinics and 1 physician office, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Andrew Nathan Knoll's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Knoll practices, 11 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Moran Rowen and Dorsey Inc | Available with a free account |
| +11 more sites and 10 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Andrew Nathan Knoll is one of 4,096 diagnostic radiologists in California
Diagnostic radiology is Dr. Knoll's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Knoll is board certified in diagnostic radiology by the American Board of Radiology. Dr. Knoll is licensed in California.
Specialties and state licenses
- Diagnostic radiology, CaliforniaPrimary
Diagnostic radiologists near Dr. Knoll
Counts of diagnostic radiologists 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. Andrew Nathan Knoll billed Medicare for 6,336 services in 2024
CMS data shows 6,336 Medicare services from Dr. Knoll across 55 procedure codes in 2024, for 2,740 Medicare patients. Medicare paid $163,056 for them.
Dr. Knoll's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 3,3952024: 3,89215%
- Other services
- 2023: 1,2672024: 2,29181%
- Tests and treatments
- 2023: 892024: 819%
- Drugs given in the office
- 2023: 02024: 72
Where Dr. Knoll's Medicare services took place, 2024
- In an office3,49955%
- In a facility2,83745%
Dr. Knoll compared with the California median for diagnostic radiologists, 2024
- Dr. Knoll
- California median
- Medicare services
- 6,336vs 2,2812.8 times
- Medicare patients
- 2,740vs 1,3462.0 times
- Part D claims
- 12vs 1414% below
Medians across 3,734 diagnostic radiologists in California with Dmand AI profiles that report each measure.
Dr. Knoll'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.
Need commercial claims for Dr. Knoll?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Knoll and other diagnostic radiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Andrew Nathan Knoll treated 2,740 Medicare patients in 2024, average age 76
CMS counts 2,740 Medicare patients who saw Dr. Knoll in 2024. The largest group is 65 to 74, with 1,017 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 27% are also on Medicaid. Their average risk score is 2.10, 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. Knoll's median patient age at 61, with 61% women.
Dr. Knoll's Medicare patients by age, 2024
Dr. Knoll's Medicare patients by sex, 2024
- Women1,70962%
- Men1,03138%
Chronic conditions among Dr. Knoll's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis57%
- Diabetes37%
- Chronic kidney disease36%
- Ischemic heart disease36%
- Mood disorders31%
- Depression29%
Share of Medicare patients with each condition. A patient can have several.
Dr. Knoll's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women61%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Andrew Nathan Knoll wrote 12 Medicare Part D claims in 2017
In 2017, Dr. Knoll wrote 12 Medicare Part D claims. They cover 1 drug, with $145 in total drug cost.
Dr. Knoll's most prescribed drugs by claims, 2017
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
Dr. Andrew Nathan Knoll scored 85 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 85 out of 100 for Dr. Knoll for performance year 2024, reported as part of a group. Dr. Knoll accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Knoll's MIPS scores, performance year 2024
- 85of 100Final score
- 85.6of 100Quality
- 40of 100Improvement Activities
- 75of 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. Andrew Nathan Knoll received $368 in industry payments from 2016 to 2022
CMS Open Payments shows 4 general payments to Dr. Knoll from 4 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 100% of the total. Genentech, Inc. paid the most, $125.
General payments to Dr. Knoll by program year, 2016 to 2022
Companies that paid Dr. Knoll the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Andrew Nathan Knoll has 1 award and honors on record
Dmand AI lists 1 award for Dr. Knoll, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Knoll
- 2013
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Andrew Nathan Knoll graduated from New York Medical College
Dr. Knoll graduated from New York Medical College in 2004.
- Medical school
- Board certified in diagnostic radiology
Source: Dmand AI Professional Profile Data
Dr. Andrew Nathan Knoll accepts plans from 8 insurance carriers
Dr. Knoll is in network with 8 carriers, including United Healthcare, Molina and Aspirus Health Plan. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.
- United Healthcare
- Molina
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- Elevance
- HCSC
- NV State Medicaid
Plan types Dr. Knoll accepts, by number of carriers
- Medicare3
- PPO3
- HMO2
- POS2
- EPO1
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Andrew Nathan Knoll'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 Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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) |
| 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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Andrew Nathan Knoll
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. Andrew Nathan Knoll's NPI number?
Dr. Andrew Nathan Knoll's NPI number is 1801075189. It was assigned on November 2, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Andrew Nathan Knoll?
Dr. Andrew Nathan Knoll is a diagnostic radiologist in Orange, California. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. Andrew Nathan Knoll practice?
Dr. Knoll practices at 1031 W Chapman Ave, Orange, CA 92868. Dr. Knoll's primary practice is Moran Rowen and Dorsey Inc in Orange, California. Dmand AI also links Dr. Knoll to 6 hospitals, 10 medical groups, 3 group practices and clinics and 1 physician office.
What is Dr. Andrew Nathan Knoll's office phone number?
The practice phone on file for Dr. Knoll is (714) 538-6731.
What is Dr. Andrew Nathan Knoll's medical license number?
Dr. Knoll holds California license A93913.
Which hospitals is Dr. Andrew Nathan Knoll affiliated with?
Dr. Knoll is affiliated with Providence St. Joseph Hospital Orange. Dmand AI links Dr. Knoll to 6 more hospitals.
What medical group is Dr. Andrew Nathan Knoll part of?
Dr. Knoll is linked to Moran, Rowen & Dorsey (MRD Imaging). Dmand AI links Dr. Knoll to 10 more medical groups.
Does Dr. Andrew Nathan Knoll accept Medicare?
Yes. CMS data shows Dr. Knoll billed Medicare for 6,336 services in 2024, and Dr. Knoll accepts Medicare assignment.
What is Dr. Andrew Nathan Knoll's MIPS score?
Dr. Knoll's MIPS final score for performance year 2024 is 85 out of 100, reported as part of a group.
How many Medicare patients does Dr. Andrew Nathan Knoll see?
CMS counts 2,740 Medicare patients who saw Dr. Knoll in 2024, with an average age of 76.
Show 7 more questionsShow fewer questions
Is Dr. Andrew Nathan Knoll board certified?
Yes. Dr. Knoll is board certified in diagnostic radiology by the American Board of Radiology.
What services does Dr. Andrew Nathan Knoll bill to Medicare?
In 2024, Dr. Knoll's most billed Medicare services were medical supplies or transport (A9585), diagnostic imaging (71045) and diagnostic imaging (70450).
Where did Dr. Andrew Nathan Knoll go to medical school?
Dr. Knoll graduated from New York Medical College in 2004.
What drugs does Dr. Andrew Nathan Knoll prescribe most?
In 2017 Medicare Part D data, Dr. Knoll's most prescribed drugs by claims were Irbesartan-Hydrochlorothiazide.
Has Dr. Andrew Nathan Knoll received payments from drug or device companies?
CMS Open Payments shows $368 in general payments to Dr. Knoll from 4 companies from 2016 to 2022. The largest total came from Genentech, Inc.
How long has Dr. Andrew Nathan Knoll been practicing?
Dr. Knoll graduated from medical school in 2004, 22 years ago.
What insurance does Dr. Andrew Nathan Knoll accept?
Dr. Knoll is in network with 8 carriers, including United Healthcare, Molina and Aspirus Health Plan. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.
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