NPPES file of Aug 9, 2026

Louis Adrian Vandermolen, M.D.

Hematology & Oncology Physician · Newport Beach, CA

Louis Adrian Vandermolen, M.D. is a hematology & oncology physician with a practice address in Newport Beach, California, and NPI 1568540193, issued on Nov 1, 2006. Check the license (California G51429, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1568540193
Name
Louis Adrian Vandermolen
Credential
M.D.
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
G51429 CA
Self-reported in NPPES; status is on the state search
Practice location
520 Superior Ave, Newport Beach, CA 92663
Phone
(949) 646-6441
Enumerated
Nov 1, 2006
Record last updated
Aug 14, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(949) 646-5719
Medicare enrollment
Enrolled (PECOS I20101130000274); accepts Medicare assignment
Medical or professional school
Loyola University Of Chicago, Stritch School Of Medicine, 1980
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →

Also registered at 520 Superior Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Greg Angstreich, MDHematology & Oncology Physician1659303873
  2. William Armstrong, MDFamily Medicine Physician1902133424
  3. Joanna Avery, MS, RDN, CDCESRegistered Dietitian1487081600
  4. Rajesh Banker, M.D.Clinical Cardiac Electrophysiology Physician1043425036
  5. Gary Carlson, MDInternal Medicine Physician1497700116
  6. John Champion, M.D.Cardiovascular Disease Physician1801980669

Verify Louis Adrian Vandermolen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G51429    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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3.1 times the Medicare Part D claims of the average hematology & oncology physician in 2024

2,712 Medicare Part D claims for 552 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 36 claims were for opioids.

  1. Louis Vandermolen2,712
  2. Specialty average877

Most prescribed

  1. Anastrozole901 claims
  2. Tamoxifen Citrate162 claims
  3. Eliquis111 claims
  4. Ibrance107 claims
  5. Exemestane85 claims
  6. Ondansetron Hcl64 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.

Bills Medicare through one group practice

  1. Usc Care Medical Group IncNewport Beach, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Louis Adrian Vandermolen among 1,583 hematology & oncology physician records in California

Louis Adrian Vandermolen, M.D. is one of 1,583 hematology & oncology physician records with a practice address in California. 83% 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 8% of them.

  • NPI issued2006 · 8% of these records are older, 54% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 71% of these records are
  • Graduated1980 · median 2003 among the 1,124 with a school on file
  • Record last updated2021 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hematology & Oncology Physician providers in California

There are 1,583 hematology & oncology physician records in California.

All 1,583 in California → Every provider in Newport Beach → Hematology & Oncology Physician nationwide →

The 8 hematology & oncology physician records with the nearest ZIP codes

  1. Greg Angstreich, MDNewport Beach, CA 926631659303873
  2. David Benjamin, MDNewport Beach, CA 926631821450396
  3. Sara Beygi, M.D.Newport Beach, CA 926631396132114
  4. Benjamin Goldenson, MDNewport Beach, CA 926631588053458
  5. Dilruba Haque, M.D.Newport Beach, CA 926631689838641
  6. Simon Khagi, M.D.Newport Beach, CA 926631710121165
  7. Sharmeen MahmoodNewport Beach, CA 926631639603236
  8. Minh Nguyen, MDNewport Beach, CA 926631740316272

Common questions

What is Louis Adrian Vandermolen, M.D.'s NPI number?

Louis Adrian Vandermolen, M.D.'s National Provider Identifier (NPI) is 1568540193, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Louis Adrian Vandermolen, M.D. located?

The NPPES record lists a practice address at 520 Superior Ave, Newport Beach, CA, 92663. Phone: (949) 646-6441. Providers update this record themselves, so call before visiting.

How can I verify Louis Adrian Vandermolen, M.D.'s license?

NPPES lists California license number G51429, 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 Louis Adrian Vandermolen, M.D. prescribe under Medicare Part D?

In 2024, Louis Adrian Vandermolen, M.D. had 2,712 Medicare Part D claims for 552 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.