Katherine I. Mercado-Nazario, M.D.
Psychiatry Physician · Vega Alta, PR
Katherine I. Mercado-Nazario, M.D. is a psychiatry physician with a practice address in Vega Alta, Puerto Rico, and NPI 1700022282, issued on Jan 5, 2009. Check the license (Puerto Rico 17401, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katherine I. Mercado-Nazario
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 17401 PR
Self-reported in NPPES; status is on the state search - Practice location
- KM 31.7 Carr #2, Vega Alta, PR 00692
- Phone
- (787) 941-3619
- Enumerated
- Jan 5, 2009
- Record last updated
- Mar 16, 2023
- Fax
- (903) 213-9127
- Medicare enrollment
- Enrolled (PECOS I20151130001283); accepts Medicare assignment
- Medical or professional school
- University Central Del Caribe Escuela De Medicina, 2004
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 403 in Puerto Rico → Look up another NPI →
Verify Katherine I. Mercado-Nazario 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 17401Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
15.3 times the Medicare Part D claims of the average psychiatry physician in 2024
15,304 Medicare Part D claims for 638 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were under 1% of claims.
Most prescribed
- Clonazepam2,262 claims
- Sertraline Hcl1,257 claims
- Temazepam1,084 claims
- Lorazepam933 claims
- Trazodone Hcl835 claims
- Quetiapine Fumarate767 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.
Katherine I. Mercado-Nazario among 403 psychiatry physician records in Puerto Rico
Katherine I. Mercado-Nazario, M.D. is one of 403 psychiatry physician records with a practice address in Puerto Rico. 76% 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 78% of them.
- NPI issued2009 · 78% of these records are older, 20% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 30% of these records are
- Graduated2004 · median 1995 among the 121 with a school on file
- Record last updated2023 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in Puerto Rico
There are 403 psychiatry physician records in Puerto Rico.
All 403 in Puerto Rico → Every provider in Vega Alta → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Melissa Almeida Cruz, M.D.Vega Alta, PR 006921881708816
- Maria Pujols, MDSan Sebastian, PR 006851417917550
- Carlos Aviles Gonzalez, MDSan German, PR 006831659419810
- Ronaldo Irizarry, M.D.San German, PR 006831932377793
- Rafael Rodriguez-Pagan, MDSan German, PR 006831184685091
- Nelly Catala, M.D.Mayaguez, PR 006821346535531
- Jorge De Jesus, M.D.Mayaguez, PR 006821194721431
- Ronald MalaveMayaguez, PR 006821841395019
Common questions
What is Katherine I. Mercado-Nazario, M.D.'s NPI number?
Katherine I. Mercado-Nazario, M.D.'s National Provider Identifier (NPI) is 1700022282, issued on Jan 5, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Katherine I. Mercado-Nazario, M.D. located?
The NPPES record lists a practice address at KM 31.7 Carr #2, Vega Alta, PR, 00692. Phone: (787) 941-3619. Providers update this record themselves, so call before visiting.
How can I verify Katherine I. Mercado-Nazario, M.D.'s license?
NPPES lists Puerto Rico license number 17401, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Katherine I. Mercado-Nazario, M.D. prescribe under Medicare Part D?
In 2024, Katherine I. Mercado-Nazario, M.D. had 15,304 Medicare Part D claims for 638 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.