NPPES file of Aug 9, 2026

Mitchell Marasigan Matundan, M.D.

Internal Medicine Physician · Bayamon, PR

Mitchell Marasigan Matundan, M.D. is an internal medicine physician with a practice address in Bayamon, Puerto Rico, and NPI 1063489557, issued on Mar 2, 2006. Check the license (Puerto Rico 15770, as entered in NPPES) with the Puerto Rico board that licenses this profession; 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
1063489557
Name
Mitchell Marasigan Matundan
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
15770 PR
Self-reported in NPPES; status is on the state search
Practice location
73 Santa Cruz Edificio Medico, Bayamon, PR 00961
Phone
(787) 269-6391
Enumerated
Mar 2, 2006
Record last updated
Jan 27, 2023
Fax
(787) 269-6442
Medicare enrollment
Enrolled (PECOS I20050411000272); accepts Medicare assignment
Medical or professional school
University Central Del Caribe Escuela De Medicina, 1997
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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Verify Mitchell Marasigan Matundan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Puerto Rico board licenses this profession
    Search for license 15770
    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
Find the Puerto Rico license search

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3.4 times the Medicare Part D claims of the average internal medicine physician in 2024

10,908 Medicare Part D claims for 296 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 43 claims were for opioids.

  1. Mitchell Matundan10,908
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium798 claims
  2. Synthroid474 claims
  3. Alendronate Sodium452 claims
  4. Gabapentin430 claims
  5. Lisinopril347 claims
  6. Amlodipine Besylate308 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: $22.74

1 payment: food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. 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.

  1. Mitchell Matundan$22.74
  2. Specialty average$1,303.06

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Mitchell Marasigan Matundan among 1,146 internal medicine physician records in Puerto Rico

Mitchell Marasigan Matundan, M.D. 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 2006, is newer than 13% of them.

  • NPI issued2006 · 13% of these records are older, 52% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 52% of these records are
  • Graduated1997 · median 1996 among the 595 with a school on file
  • Record last updated2023 · 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).

117 internal medicine physician records list a practice address in Bayamon

They are 117 of the 2,958 NPPES records with a practice address in Bayamon, and 1,146 internal medicine physician records in Puerto Rico.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Lara Aponte Perez, M.D.Bayamon, PR 009611437154523
  2. Justino Betancourt, M.D.Bayamon, PR 009611295735363
  3. Pablo Bisono Rodriguez, M.D.Bayamon, PR 009611366412801
  4. Carlos Martinez Duran, MDBayamon, PR 009611700863420
  5. Zahira Najul, MDBayamon, PR 009611760487631
  6. Jose Negron Maldonado, M.D.Bayamon, PR 009611689611907
  7. Ruben Otero, M.D.Bayamon, PR 009611528037306
  8. Carlos Perez, MDBayamon, PR 009611669447256

Common questions

What is Mitchell Marasigan Matundan, M.D.'s NPI number?

Mitchell Marasigan Matundan, M.D.'s National Provider Identifier (NPI) is 1063489557, issued on Mar 2, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mitchell Marasigan Matundan, M.D. located?

The NPPES record lists a practice address at 73 Santa Cruz Edificio Medico, Bayamon, PR, 00961. Phone: (787) 269-6391. Providers update this record themselves, so call before visiting.

How can I verify Mitchell Marasigan Matundan, M.D.'s license?

NPPES lists Puerto Rico license number 15770, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.

How much does Mitchell Marasigan Matundan, M.D. prescribe under Medicare Part D?

In 2024, Mitchell Marasigan Matundan, M.D. had 10,908 Medicare Part D claims for 296 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.