Dr. Carsten S. Ronlov, MD
- Medicare services, 2018
- 41
- Part D claims, 2024
- 11
- Industry payments
- $754
- Affiliated sites
- 1
- Insurance carriers
- 8
- Practice address
- 400 N Pepper Ave, Colton, CA 92324
- Practice phone
- Call (909) 580-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Arrowhead Regional Medical Center
Colton, California
Find Dr. Ronlov'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. Carsten S. Ronlov is an OB-GYN in Colton, California
Dr. Ronlov practices at Arrowhead Regional Medical Center in Colton, California.
Dr. Ronlov's NPI, 1841382876, was assigned on September 28, 2006. Dr. Ronlov graduated from University of Colorado Anschutz Medical Campus in 1971. Dr. Ronlov's California license number on file is A35029.
- NPI
- 1841382876NPI Registry (opens in a new tab)
- NPI enumeration date
- September 28, 2006
- NPI status
- Active
- Practice phone
- (909) 580-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1971
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Carsten S. Ronlov practices at Arrowhead Regional Medical Center in Colton, California
Dr. Ronlov's primary practice is Arrowhead Regional Medical Center, at 400 N Pepper Ave, Colton, CA 92324 in San Bernardino County. The practice phone is (909) 580-1000.
- Arrowhead Regional Medical Center400 N Pepper Ave, Colton, CA 92324 · San Bernardino CountyPhone(909) 580-1000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Carsten S. Ronlov is affiliated with 2 sites of care
Dr. Ronlov's primary practice is Arrowhead Regional Medical Center in Colton, California. Dmand AI also links Dr. Ronlov to 1 physician office, 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. Carsten S. Ronlov's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ronlov practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Arrowhead Regional Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Carsten S. Ronlov is one of 4,642 OB-GYNs in California
Obstetrics and gynecology is Dr. Ronlov's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Ronlov is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology. Dr. Ronlov has a license on file in California.
Specialties and state licenses
- Obstetrics and gynecology, CaliforniaPrimary
OB-GYNs near Dr. Ronlov
Counts of OB-GYNs 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. Carsten S. Ronlov billed Medicare for 41 services in 2018
CMS data shows 41 Medicare services from Dr. Ronlov across 3 procedure codes in 2018. Medicare paid $2,407 for them. Every service was in an office.
Dr. Ronlov's Medicare services by type, 2018
- Other services25
- Office and hospital visits16
Dr. Ronlov compared with the California median for OB-GYNs, 2018
- Dr. Ronlov
- California median
- Medicare services
- 41vs 5829% below
- Part D claims
- 23vs 3534% below
Medians across 3,823 OB-GYNs in California with Dmand AI profiles that report each measure.
Dr. Ronlov's most billed Medicare procedure codes, 2018
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. Ronlov and other OB-GYNs in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Carsten S. Ronlov's patients have a median age of 69
Across all payers, Dmand AI patient panel data puts Dr. Ronlov's median patient age at 69, with 73% women.
Dr. Ronlov's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women73%
- Men27%
Source: Dmand AI Patient Panel Data
Dr. Carsten S. Ronlov wrote 11 Medicare Part D claims in 2024
In 2024, Dr. Ronlov wrote 11 Medicare Part D claims. They cover 1 drug, with $8,510 in total drug cost. In 2018, CMS named 31 claims across 2 drugs.
Dr. Ronlov's most prescribed drugs by claims, 2019
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2018 to 2019
- 2018
- 2019
- Claims for drugs CMS names
- 2018: 312019: 2326%
Drugs named by CMS: 1 in 2019, 2 in 2018.
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
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Dr. Carsten S. Ronlov received $754 in industry payments from 2016 to 2017
CMS Open Payments shows 8 general payments to Dr. Ronlov from 2 drug and device companies from 2016 to 2017. Travel and lodging make up the largest share, 78% of the total. Intuitive Surgical, Inc. paid the most, $699.
General payments to Dr. Ronlov by program year, 2016 to 2017
General payments to Dr. Ronlov by kind, 2016 to 2017
- Travel and lodging$58778%
- Food and beverage$16722%
Companies that paid Dr. Ronlov the most, 2016 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Carsten S. Ronlov has 1 award and honors on record
Dmand AI lists 1 award for Dr. Ronlov.
Awards and honors for Dr. Ronlov
- Undated
- ACOG Fellow
Source: Dmand AI Professional Profile Data
Dr. Carsten S. Ronlov graduated from University of Colorado Anschutz Medical Campus
Dr. Ronlov graduated from University of Colorado Anschutz Medical Campus in 1971.
- Medical school
- Board certified in obstetrics & gynecology
Source: Dmand AI Professional Profile Data
Dr. Carsten S. Ronlov accepts plans from 8 insurance carriers
Dr. Ronlov is in network with 8 carriers, including United Healthcare, Aetna and Alliant Health Plans. HMO plans come from the most carriers, 4. Check the plan with the practice before a visit.
- United Healthcare
- Aetna
- Alliant Health Plans
- Blue Cross and Blue Shield of Kansas City
- Delta Dental
- Elevance
- EMI Health
- HCSC
Plan types Dr. Ronlov accepts, by number of carriers
- HMO4
- PPO3
- EPO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Carsten S. Ronlov'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 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) |
| 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. Carsten S. Ronlov
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. Carsten S. Ronlov's NPI number?
Dr. Carsten S. Ronlov's NPI number is 1841382876. It was assigned on September 28, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Carsten S. Ronlov?
Dr. Carsten S. Ronlov is an OB-GYN in Colton, California. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Carsten S. Ronlov practice?
Dr. Ronlov practices at 400 N Pepper Ave, Colton, CA 92324. Dr. Ronlov's primary practice is Arrowhead Regional Medical Center in Colton, California. Dmand AI also links Dr. Ronlov to 1 physician office.
What is Dr. Carsten S. Ronlov's office phone number?
The practice phone on file for Dr. Ronlov is (909) 580-1000.
What is Dr. Carsten S. Ronlov's medical license number?
Dr. Ronlov's California license number on file is A35029.
Does Dr. Carsten S. Ronlov accept Medicare?
Yes. CMS data shows Dr. Ronlov billed Medicare for 41 services in 2018.
Is Dr. Carsten S. Ronlov board certified?
Yes. Dr. Ronlov is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology.
What services does Dr. Carsten S. Ronlov bill to Medicare?
In 2018, Dr. Ronlov's most billed Medicare services were office visit, established patient (99214), medicare temporary code (Q0091) and medicare service (G0101).
Where did Dr. Carsten S. Ronlov go to medical school?
Dr. Ronlov graduated from University of Colorado Anschutz Medical Campus in 1971.
What drugs does Dr. Carsten S. Ronlov prescribe most?
In 2019 Medicare Part D data, Dr. Ronlov's most prescribed drugs by claims were Premarin.
Show 3 more questionsShow fewer questions
Has Dr. Carsten S. Ronlov received payments from drug or device companies?
CMS Open Payments shows $754 in general payments to Dr. Ronlov from 2 companies from 2016 to 2017. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Carsten S. Ronlov been practicing?
Dr. Ronlov graduated from medical school in 1971, 55 years ago.
What insurance does Dr. Carsten S. Ronlov accept?
Dr. Ronlov is in network with 8 carriers, including United Healthcare, Aetna and Alliant Health Plans. HMO plans come from the most carriers, 4. Check the plan with the practice before a visit.
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