Juan Castaner, M.D.
Maternal & Fetal Medicine Physician · San Juan, PR
Juan Castaner, M.D. is a maternal & fetal medicine physician with a practice address in San Juan, Puerto Rico, and NPI 1669477642, issued on Jun 16, 2005. Check the license (Puerto Rico 11250, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Juan Castaner
- Credential
- M.D.
- Primary taxonomy
- Maternal & Fetal Medicine Physician 207VM0101X
- License number
- 11250 PR
Self-reported in NPPES; status is on the state search - Practice location
- 29 Washington Street, San Juan, PR 00907
- Phone
- (787) 725-6750
- Enumerated
- Jun 16, 2005
- Record last updated
- Dec 1, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (787) 723-8854
- Medicare enrollment
- Enrolled (PECOS I20031223000428); accepts Medicare assignment
- Medical or professional school
- Albany Medical College Of Union University, 1987
- Entity
- Type 1 · individual
6 nearest maternal & fetal medicine physician records → All 7 in Puerto Rico → Look up another NPI →
Also registered at 29 Washington Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Yaiza Martinez-Ortiz, MDGastroenterology Physician1134413701
- Diana Noya Mangual, M.D.Obstetrics & Gynecology Physician1710185905
- Graciela Rivera Castro, MDObstetrics & Gynecology Physician1033666813
- Angel Rodriguez Rivera, M.D,Surgical Oncology Physician1134419161
Verify Juan Castaner 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 11250Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average maternal & fetal medicine physician in 2024
109 Medicare Part D claims for 38 beneficiaries, against an average of 41 among the 353 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol23 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: $161.44
4 payments; by number, the most common kind was food and beverage; the largest payer was Hologic Sales and Service, LLC. The 784 providers of this specialty with any payment received $1,252.61 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.
Maternal & Fetal Medicine Physician providers in Puerto Rico
There are 7 maternal & fetal medicine physician records in Puerto Rico.
All 7 in Puerto Rico → Every provider in San Juan → Maternal & Fetal Medicine Physician nationwide →
The 6 maternal & fetal medicine physician records with the nearest ZIP codes
- Lauren Lynch, MDSan Juan, PR 009091487630646
- Annette Perez-Delboy, M.D.San Juan, PR 009021528097615
- Juan Garcia, MDToa Baja, PR 009491164581344
- Edilberto Martinez, MDBayamon, PR 009611073594404
- Jose Perez Yordan, M.D.Caguas, PR 007261497193924
- William Ramirez-Cacho, M.D.Dorado, PR 006461194868869
Common questions
What is Juan Castaner, M.D.'s NPI number?
Juan Castaner, M.D.'s National Provider Identifier (NPI) is 1669477642, issued on Jun 16, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Juan Castaner, M.D. located?
The NPPES record lists a practice address at 29 Washington Street, San Juan, PR, 00907. Phone: (787) 725-6750. Providers update this record themselves, so call before visiting.
How can I verify Juan Castaner, M.D.'s license?
NPPES lists Puerto Rico license number 11250, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Juan Castaner, M.D. prescribe under Medicare Part D?
In 2024, Juan Castaner, M.D. had 109 Medicare Part D claims for 38 beneficiaries; the average among maternal & fetal medicine physician prescribers was 41. 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.