Ma Clarissa H. Del Rosario, M.D.
Hospitalist Physician · Rochester, NY
Ma Clarissa H. Del Rosario, M.D. is a hospitalist physician with a practice address in Rochester, New York, and NPI 1275723074, issued on Jul 27, 2007. Check the license (New York 245321, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Ma Clarissa H. Del Rosario
- Credential
- M.D.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 245321 NY
Self-reported in NPPES; status is on the state search - Practice location
- 100 Kings Hwy S, Rochester, NY 14617
- Phone
- (585) 922-3122
- Enumerated
- Jul 27, 2007
- Record last updated
- Mar 17, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicaid ID
- 02940870 NY
- Medicare enrollment
- Enrolled (PECOS I20080926000410); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 2,067 in New York → Look up another NPI →
Also registered at 100 Kings Hwy S
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jama Bernard, CNM, LMAdvanced Practice Midwife1538608948
- Dawn BrizziCase Manager/Care Coordinator1316871205
- Jacqueline Brooks, DPTPhysical Therapist1669837258
- Louis Cerami, RPA-CPhysician Assistant1487612701
- Hannah Colbert, MSWClinical Social Worker1710354766
- Kathryn DorwardPharmacist1205249455
Verify Ma Clarissa H. Del Rosario in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 245321Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
11% fewer Medicare Part D claims than the average hospitalist physician in 2024
463 Medicare Part D claims for 129 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
Most prescribed
- Cefdinir43 claims
- Prednisone34 claims
- Doxycycline Hyclate24 claims
- Torsemide17 claims
- Albuterol Sulfate Hfa12 claims
- Eliquis12 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: $32.00
2 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 7,324 providers of this specialty with any payment received $494.84 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.
One hospital affiliation
- Oswego HospitalOswego, NY · Acute Care Hospitals3 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Ma Clarissa H. Del Rosario among 2,067 hospitalist physician records in New York
Ma Clarissa H. Del Rosario, M.D. is one of 2,067 hospitalist physician records with a practice address in New York. 93% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 12% of them.
- NPI issued2007 · 12% of these records are older, 83% newer
- In a Medicare fileYes · 93% of these records are
- In the CMS Doctors and Clinicians fileYes · 83% of these records are
- Graduated2001 · median 2013 among the 1,716 with a school on file
- Record last updated2018 · 37% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
265 hospitalist physician records list a practice address in Rochester
They are 265 of the 20,520 NPPES records with a practice address in Rochester, and 2,067 hospitalist physician records in New York.
All 2,067 in New York → Every provider in Rochester → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Megan Cox, M.D.Rochester, NY 146181093158172
- Tooba Farooqui, MDRochester, NY 146181326533027
- Ashish Boghani, MDRochester, NY 146201386678563
- Chin-Lin Ching, MDRochester, NY 146201356453138
- Dharmendra Persaud, M.D.Rochester, NY 146201821184367
- Rebekah Roll, MDRochester, NY 146201497336283
- Ishraque ShawonRochester, NY 146201841453297
- Kyongwook YimRochester, NY 146201457390122
Common questions
What is Ma Clarissa H. Del Rosario, M.D.'s NPI number?
Ma Clarissa H. Del Rosario, M.D.'s National Provider Identifier (NPI) is 1275723074, issued on Jul 27, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ma Clarissa H. Del Rosario, M.D. located?
The NPPES record lists a practice address at 100 Kings Hwy S, Rochester, NY, 14617. Phone: (585) 922-3122. Providers update this record themselves, so call before visiting.
How can I verify Ma Clarissa H. Del Rosario, M.D.'s license?
NPPES lists New York license number 245321, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ma Clarissa H. Del Rosario, M.D. prescribe under Medicare Part D?
In 2024, Ma Clarissa H. Del Rosario, M.D. had 463 Medicare Part D claims for 129 beneficiaries; the average among hospitalist physician prescribers was 521. 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.