Karen Ivette Ossa, M.D.
Internal Medicine Physician · San Juan, PR
Karen Ivette Ossa, M.D. is an internal medicine physician with a practice address in San Juan, Puerto Rico, and NPI 1801005418, issued on May 21, 2007. Check the license (Puerto Rico 16274, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karen Ivette Ossa
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 16274 PR
ME-117566 FL
Self-reported in NPPES; status is on the state search - Practice location
- 1357 Ave Ashford, San Juan, PR 00907
- Phone
- (787) 999-0204
- Enumerated
- May 21, 2007
- Record last updated
- Jan 4, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20200408002960); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 1357 Ave Ashford
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lorenzo Gonzalez, M.D.Child & Adolescent Psychiatry Physician1275564163
- Kimberly Guadalupe-Andersen, CRNACertified Registered Nurse Anesthetist1275949323
Verify Karen Ivette Ossa 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 16274Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average internal medicine physician in 2024
377 Medicare Part D claims for 169 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 22 claims were for opioids.
Most prescribed
- Gabapentin35 claims
- Eliquis21 claims
- Losartan Potassium16 claims
- Levofloxacin14 claims
- Doxycycline Hyclate13 claims
- Pantoprazole Sodium12 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: $47.16
2 payments; by number, the most common kind was food and beverage; the largest payer was E.R. Squibb & Sons, L.L.C. 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.
Bills Medicare through 2 group practices
- Memorial Health Partners Foundation, IncChattanooga, TN
- Sound Physicians OF Florida VI LLCFort Lauderdale, FL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
322 internal medicine physician records list a practice address in San Juan
They are 322 of the 8,960 NPPES records with a practice address in San Juan, and 1,146 internal medicine physician records in Puerto Rico.
All 322 in San Juan → All 1,146 in Puerto Rico → Every provider in San Juan →
Other internal medicine physician records in Puerto Rico
- Jamil Abou El Hossen Carmona, MDRio Piedras, PR1700575495
- Jamil Abouelhossen, MDFajardo, PR1356347538
- James Abrams, MDSan Juan, PR1861721789
- Fernando Abreu GonzalezSan Juan, PR1437100930
- Arlene Abreu Rivera, MDCaguas, PR1801090261
- Lourdes Acevedo, M.D.Aguada, PR1487751574
- Luis Acevedo Aquino, MDAguadilla, PR1477128999
- Sara Acevedo Armaiz, MDCarolina, PR1194731711
- Luis Acevedo Soto, MDMayaguez, PR1851084412
- Melanie Acevedo Valle, M.D.Aguada, PR1700140357
Common questions
What is Karen Ivette Ossa, M.D.'s NPI number?
Karen Ivette Ossa, M.D.'s National Provider Identifier (NPI) is 1801005418, issued on May 21, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Karen Ivette Ossa, M.D. located?
The NPPES record lists a practice address at 1357 Ave Ashford, San Juan, PR, 00907. Phone: (787) 999-0204. Providers update this record themselves, so call before visiting.
How can I verify Karen Ivette Ossa, M.D.'s license?
NPPES lists Puerto Rico license number 16274, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Karen Ivette Ossa, M.D. prescribe under Medicare Part D?
In 2024, Karen Ivette Ossa, M.D. had 377 Medicare Part D claims for 169 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.