Yonatan Mahller, MD, PHD
Obstetrics & Gynecology Physician · Newport Beach, CA
Yonatan Mahller, MD, PHD is an obstetrics & gynecology physician with a practice address in Newport Beach, California, and NPI 1396977930, issued on Aug 16, 2009. Check the license (California A117135, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Yonatan Mahller
- Credential
- MD, PHD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A117135 CA
Self-reported in NPPES; status is on the state search - Practice location
- 320 Superior Ave Ste 290, Newport Beach, CA 92663
- Phone
- (949) 375-8244
- Enumerated
- Aug 16, 2009
- Record last updated
- Sep 11, 2025
- Fax
- (949) 398-9812
- Medicare enrollment
- Enrolled (PECOS I20140514001491); may accept Medicare assignment
- Medical or professional school
- University Of Cincinnati College Of Medicine, 2009
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Verify Yonatan Mahller in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A117135Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
42 Medicare Part D claims for 12 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
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.
Industry payments in 2024: $38.25
2 payments; by number, the most common kind was food and beverage; the largest payer was Hologic Sales and Service, LLC. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Yonatan Mahller among 5,088 obstetrics & gynecology physician records in California
Yonatan Mahller, MD, PHD 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 2009, is newer than 66% of them.
- NPI issued2009 · 66% of these records are older, 30% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2009 · median 2004 among the 2,700 with a school on file
- Record last updated2025 · 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).
Obstetrics & Gynecology Physician providers in California
There are 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Newport Beach → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Richard Agnew, MD OB GYNNewport Beach, CA 926631629089206
- William Clayton, MDNewport Beach, CA 926631366525586
- Bernard Feldman, M.DNewport Beach, CA 926631558380048
- Rhonda Flora, M.D.Newport Beach, CA 926631720160583
- Deborah Grouse, MDNewport Beach, CA 926631669408076
- Chai-Lin Hsu, M.D.Newport Beach, CA 926631336191386
- Lisa Karamardian, M.D.Newport Beach, CA 926631922053644
- Patricia Keresztes-Korber, M.DNewport Beach, CA 926631780616805
Common questions
What is Yonatan Mahller, MD, PHD's NPI number?
Yonatan Mahller, MD, PHD's National Provider Identifier (NPI) is 1396977930, issued on Aug 16, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Yonatan Mahller, MD, PHD located?
The NPPES record lists a practice address at 320 Superior Ave Ste 290, Newport Beach, CA, 92663. Phone: (949) 375-8244. Providers update this record themselves, so call before visiting.
How can I verify Yonatan Mahller, MD, PHD's license?
NPPES lists California license number A117135, 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 Yonatan Mahller, MD, PHD prescribe under Medicare Part D?
In 2024, Yonatan Mahller, MD, PHD had 42 Medicare Part D claims for 12 beneficiaries; 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.