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DR. MA CLARISSA H DEL ROSARIO M.D.
NPI 1275723074
Hospitalist in Rochester, NY

Active since July 27, 2007PECOS EnrolledAccepts Medicare Assignment
100 KINGS HWY S, ROCHESTER, NY 14617(585) 922-3122 Get Directions Write a Review

NPPES record last updated: March 17, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 17, 2018, Dec 15, 2017, Jun 29, 2017 (3 updates tracked since 2017).

About Dr. Ma Clarissa H Del Rosario M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MA CLARISSA H DEL ROSARIO M.D. (NPI 1275723074) is an individual hospitalist provider in Rochester, New York, licensed in New York (245321) and active in the NPI registry since July 2007. She is enrolled in Medicare PECOS, is affiliated with Oswego Hospital, and maintains a secondary practice location in North Syracuse.

NPPES Registry Identity

NPI1275723074
Entity TypeIndividualFemale
Primary Taxonomy208M00000X
Provider Legal NameDR. MA CLARISSA H DEL ROSARIOCredential: M.D.
Location Address100 KINGS HWY SRochester, NY 14617-5504
Mailing Address1200 Driving Park AveNewark, NY 14513-1090
Phone(585) 922-3122
Sole ProprietorNo
Medical School CMSOtherGraduated 2001
Enumeration DateJuly 27, 2007
Last NPPES UpdateMarch 17, 20183 updates tracked since enumeration
✔ NPI 1275723074 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
License✔ Licensed in NY · 245321
Definition
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
Also ListedInternal Medicine · NephrologyTaxonomy 207RN0300X · License 245321 (NY)
100 KINGS HWY S, Rochester, NY 14617
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Other Names 1

Other Name (5)Dr. Ma. Clarissa H Del Rosario M.d.

Secondary Practice Location 1

Location 16846 Buckley RdNorth Syracuse, NY 13212-4275 · Phone (315) 410-6400 · Fax (315) 410-6410

Other Identifiers 1

Medicaid02940870NY

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Ma Clarissa H Del Rosario M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2466529847
PECOS Enrollment IDI20080926000410
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

5

Medicare enrollment records show Ma Clarissa Del Rosario reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Rochester General Hospital
1.5 mi
General Acute Care Hospital
1425 PORTLAND AVE
Rochester, NY 14621
  • Reassigned Medicare billing, New York enrollment
  • 2,285 clinicians in this Medicare group
NPI 1063531929 (585) 922-4000
Newark Wayne Community Hospital
26 mi
General Acute Care Hospital
1200 DRIVING PARK AVE
Newark, NY 14513
  • Reassigned Medicare billing, New York enrollment
  • 679 clinicians in this Medicare group
NPI 1346369212 (315) 332-2022
Clifton Springs Sanitarium Co
28 mi
General Acute Care Hospital
2 COULTER RD
Clifton Springs, NY 14432
  • Reassigned Medicare billing, New York enrollment
  • 872 clinicians in this Medicare group
NPI 1366505463 (315) 462-9561
Geneva General Hospital Inc
38 mi
Dermatology
196 NORTH ST
Geneva, NY 14456
  • Reassigned Medicare billing, New York enrollment
  • 148 clinicians in this Medicare group
NPI 1447635156 (315) 787-4150
Oswego Hospital
56 mi
Anesthesiology
110 W 6TH ST
Oswego, NY 13126
  • Reassigned Medicare billing, New York enrollment
  • 122 clinicians in this Medicare group
NPI 1255639043 (315) 349-5511

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
138 services77 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
138 services82 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
120 services107 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
53 services52 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
29 services16 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Oswego Hospital

Acute Care Hospitals · Oswego, NY
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330218
Location110 West Sixth StreetOswego, NY 13126 · Oswego County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 14617 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$126.40 typical visit price
range $54.87 – $166.88
Typical copayment $31.60 (range $13.71 – $41.72)
Most-billed visit code 99204
Established Patient
$97.08 typical visit price
range $17.54 – $136.14
Typical copayment $24.27 (range $4.38 – $34.03)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 4

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress E0260
DME-Hospital Beds · category DB000N
3 suppliers15 claims15 services$53.47 avg. paid by Medicare
Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
3 suppliers43 claims44 services$17.73 avg. paid by Medicare
Nebulizer, with compressor E0570
DME-Other DME · category DE000N
2 suppliers11 claims11 services$3.80 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
3 suppliers57 claims58 services$92.51 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

PAUL JOHN PRICE
Registered Nurse (Case Management)
100 KINGS HWY S
ROCHESTER, NY 14617
Monroe County (585) 922-4800
JESSICA L NONKES PT, OCS
Physical Therapist
100 KINGS HWY S, SUITE 1000
ROCHESTER, NY 14617
Monroe County (585) 467-1070
JOSEPH ANDREW COLLINS RN
Registered Nurse
100 KINGS HWY S
IRONDEQUOIT, NY 14617
Monroe County (585) 260-9409
MRS. MARY T RICHARDS NP
Nurse Practitioner (Family)
100 KINGS HWY S
ROCHESTER, NY 14617
Monroe County (585) 922-8353
KATHRYN DORWARD
Pharmacist
100 KINGS HWY S, SUITE 2500
ROCHESTER, NY 14617
Monroe County (585) 922-1562
MRS. PAMELA TROMPETER LMSW
Social Worker
100 KINGS HWY S
ROCHESTER, NY 14617
Monroe County (585) 448-9504
CARLY MESSENGER PHARMD
Pharmacist
100 KINGS HWY S
ROCHESTER, NY 14617
Monroe County (585) 922-1525
DARLENE ALEXANDRA NAVAS
Student in an Organized Health Care Education/Training Program
100 KINGS HWY S
ROCHESTER, NY 14617
Monroe County (585) 922-1083

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Ma Clarissa Del Rosario's NPI number?

The NPI number for Ma Clarissa Del Rosario is 1275723074. It was assigned to this individual provider in the NPPES registry on July 27, 2007. The provider is also known as Dr. Ma. Clarissa H Del Rosario M.D..

Where is Ma Clarissa Del Rosario located?

Ma Clarissa Del Rosario practices at 100 Kings Hwy S, Rochester, NY 14617. The listed phone number is (585) 922-3122.

What is Ma Clarissa Del Rosario's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Ma Clarissa Del Rosario enrolled in Medicare?

Yes. Ma Clarissa Del Rosario is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Ma Clarissa Del Rosario's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ma Clarissa Del Rosario reassigns Medicare benefits to 5 organizations: Rochester General Hospital (Rochester, NY), Newark Wayne Community Hospital (Newark, NY), Clifton Springs Sanitarium Co (Clifton Springs, NY), Geneva General Hospital Inc (Geneva, NY) and Oswego Hospital (Oswego, NY). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Ma Clarissa Del Rosario's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Ma Clarissa Del Rosario affiliated with any hospitals?

According to CMS data, Ma Clarissa Del Rosario is affiliated with Oswego Hospital.

When was this NPI record last updated?

The NPPES record for Ma Clarissa Del Rosario was last updated on March 17, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.