Larry J. Vandaalen, MD
Internal Medicine Physician · Rio Piedras, PR
Larry J. Vandaalen, MD is an internal medicine physician with a practice address in Rio Piedras, Puerto Rico, and NPI 1457341240, issued on Oct 24, 2005. Check the license (Puerto Rico 6837, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Larry J. Vandaalen
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 6837 PR
Self-reported in NPPES; status is on the state search - Practice location
- Carr 21, Rio Piedras, PR 00921
- Phone
- (787) 793-0440
- Enumerated
- Oct 24, 2005
- Record last updated
- Feb 13, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (787) 781-2766
- Medicare enrollment
- Enrolled (PECOS I20080815000501); accepts Medicare assignment
- Medical or professional school
- University Central Del Caribe Escuela De Medicina, 1980
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,146 in Puerto Rico → Look up another NPI →
Verify Larry J. Vandaalen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Puerto Rico board licenses this profession
Search for license 6837Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average internal medicine physician in 2024
6,945 Medicare Part D claims for 350 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims. 12 claims were for opioids.
Most prescribed
- Synthroid388 claims
- Famotidine347 claims
- Rosuvastatin Calcium312 claims
- Losartan Potassium273 claims
- Amlodipine Besylate264 claims
- Gabapentin212 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.
Industry payments in 2024: $46.35
2 payments; by number, the most common kind was food and beverage; the largest payer was Boehringer Ingelheim Pharmaceuticals, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Larry J. Vandaalen among 1,146 internal medicine physician records in Puerto Rico
Larry J. Vandaalen, MD is one of 1,146 internal medicine physician records with a practice address in Puerto Rico. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 87% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 52% of these records are
- Graduated1980 · median 1996 among the 595 with a school on file
- Record last updated2008 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
18 internal medicine physician records list a practice address in Rio Piedras
They are 18 of the 372 NPPES records with a practice address in Rio Piedras, and 1,146 internal medicine physician records in Puerto Rico.
All 1,146 in Puerto Rico → Every provider in Rio Piedras → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Juan Jose Bayron, M.D.San Juan, PR 009211932104015
- Francisco Bellaflores, MDRio Piedras, PR 009211689653222
- Hidelisa Borges-Aponte, MDSan Juan, PR 009211659329266
- Luzimar Conaway, MDSan Juan, PR 009211952394728
- Maria Correa, MDSan Juan, PR 009211215907381
- Hector Leon-Figueroa, MDRio Piedras, PR 009211225020704
- Milagros Marrero, MDSan Juan, PR 009211730169244
- Juan Montes Ruiz, MDSan Juan, PR 009211952391732
Common questions
What is Larry J. Vandaalen, MD's NPI number?
Larry J. Vandaalen, MD's National Provider Identifier (NPI) is 1457341240, issued on Oct 24, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Larry J. Vandaalen, MD located?
The NPPES record lists a practice address at Carr 21, Rio Piedras, PR, 00921. Phone: (787) 793-0440. Providers update this record themselves, so call before visiting.
How can I verify Larry J. Vandaalen, MD's license?
NPPES lists Puerto Rico license number 6837, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Larry J. Vandaalen, MD prescribe under Medicare Part D?
In 2024, Larry J. Vandaalen, MD had 6,945 Medicare Part D claims for 350 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.