Carsten S. Ronlov, M.D.
Obstetrics & Gynecology Physician · Los Alamitos, CA
Carsten S. Ronlov, M.D. is an obstetrics & gynecology physician with a practice address in Los Alamitos, California, and NPI 1841382876, issued on Sep 28, 2006. Check the license (California A35029, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Carsten S. Ronlov
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A35029 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3851 Katella Ave Ste 300, Los Alamitos, CA 90720
- Phone
- (562) 429-9433
- Enumerated
- Sep 28, 2006
- Record last updated
- Sep 21, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (562) 429-9544
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 3851 Katella Ave Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Andrew Awadalla, MDObstetrics & Gynecology Physician1548503246
- Nancy Kimber, M.D.Obstetrics & Gynecology Physician1699789792
Verify Carsten S. Ronlov in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A35029Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
11 Medicare Part D claims, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Carsten S. Ronlov among 5,088 obstetrics & gynecology physician records in California
Carsten S. Ronlov, M.D. is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 52% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 53% of these records are
- Record last updated2016 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
14 obstetrics & gynecology physician records list a practice address in Los Alamitos
They are 14 of the 1,035 NPPES records with a practice address in Los Alamitos, and 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Los Alamitos → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Virginia Agnelli, M.D.Los Alamitos, CA 907201982643763
- Andrew Awadalla, MDLos Alamitos, CA 907201548503246
- Cynthia Chao, DO A PROFESSIONAL COLos Alamitos, CA 907201720077274
- Allyson Davis, M.D.Los Alamitos, CA 907201255570198
- James Ger, M.D.Los Alamitos, CA 907201598725368
- Nancy Kimber, M.D.Los Alamitos, CA 907201699789792
- Joel Kizner, M.D.Los Alamitos, CA 907201134139751
- Karen Koe, MDLos Alamitos, CA 907201780648709
Common questions
What is Carsten S. Ronlov, M.D.'s NPI number?
Carsten S. Ronlov, M.D.'s National Provider Identifier (NPI) is 1841382876, issued on Sep 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Carsten S. Ronlov, M.D. located?
The NPPES record lists a practice address at 3851 Katella Ave Ste 300, Los Alamitos, CA, 90720. Phone: (562) 429-9433. Providers update this record themselves, so call before visiting.
How can I verify Carsten S. Ronlov, M.D.'s license?
NPPES lists California license number A35029, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Carsten S. Ronlov, M.D. prescribe under Medicare Part D?
In 2024, Carsten S. Ronlov, M.D. had 11 Medicare Part D claims; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.