Nicolas C. Casellas Castillo, MD
Obstetrics & Gynecology Physician · San Juan, PR
Nicolas C. Casellas Castillo, MD is an obstetrics & gynecology physician with a practice address in San Juan, Puerto Rico, and NPI 1770540304, issued on Apr 27, 2006. Check the license (Puerto Rico 8376, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Nicolas C. Casellas Castillo
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 8376 PR
Self-reported in NPPES; status is on the state search - Practice location
- Edif Chinea 655 Calle Pavia, San Juan, PR 00909
- Phone
- (787) 726-8201
- Enumerated
- Apr 27, 2006
- Record last updated
- Jan 28, 2022
- Medicaid ID
- 038868800 PR
- Medicare enrollment
- Enrolled (PECOS I20130424000104); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 360 in Puerto Rico → Look up another NPI →
Verify Nicolas C. Casellas Castillo 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 8376Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024
320 Medicare Part D claims for 106 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Estradiol83 claims
- Progesterone77 claims
- Clotrimazole-Betamethasone21 claims
- Clobetasol Propionate13 claims
- Estradiol (Once Weekly)12 claims
- Ketoconazole12 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: $62.50
1 payment: food and beverage; the largest payer was Hologic Sales and Service, LLC. The 21,429 providers of this specialty with any payment received $1,030.61 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.
Nicolas C. Casellas Castillo among 360 obstetrics & gynecology physician records in Puerto Rico
Nicolas C. Casellas Castillo, MD is one of 360 obstetrics & gynecology physician records with a practice address in Puerto Rico. 86% 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 14% of them.
- NPI issued2006 · 14% of these records are older, 46% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1985 · median 1994 among the 181 with a school on file
- Record last updated2022 · 70% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
101 obstetrics & gynecology physician records list a practice address in San Juan
They are 101 of the 8,960 NPPES records with a practice address in San Juan, and 360 obstetrics & gynecology physician records in Puerto Rico.
All 360 in Puerto Rico → Every provider in San Juan → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Angel Aviles Aviles, MDSanturce, PR 009091225016132
- Juan Bonano, M.D.San Juan, PR 009091851341630
- Soan Cruz Ortiz, M.D.San Juan, PR 009091053540823
- Francisco De Torres, MDSanturce, PR 009091487724415
- Angel Fraguada, M.D.Santurce, PR 009091447251285
- Monica Martinez Rivera, M.D.San Juan, PR 009091871873091
- Ramon Mendez, M.D.San Juan, PR 009091457345886
- Francisco Pla Morales, M.D.San Juan, PR 009091396716478
Common questions
What is Nicolas C. Casellas Castillo, MD's NPI number?
Nicolas C. Casellas Castillo, MD's National Provider Identifier (NPI) is 1770540304, issued on Apr 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Nicolas C. Casellas Castillo, MD located?
The NPPES record lists a practice address at Edif Chinea 655 Calle Pavia, San Juan, PR, 00909. Phone: (787) 726-8201. Providers update this record themselves, so call before visiting.
How can I verify Nicolas C. Casellas Castillo, MD's license?
NPPES lists Puerto Rico license number 8376, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Nicolas C. Casellas Castillo, MD prescribe under Medicare Part D?
In 2024, Nicolas C. Casellas Castillo, MD had 320 Medicare Part D claims for 106 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.