Quick answers
- Does Carissa Monterroso accept Medicare assignment?
- Yes. Medicare's clinician data says Carissa Monterroso accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Carissa Monterroso see?
- In 2024, CMS data shows 210 Original Medicare patients and 510 services for Carissa Monterroso. This counts Original Medicare only and measures volume, not quality.
- What is Carissa Monterroso's NPI number?
- 1639598154. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Carissa Monterroso, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 210 |
|---|---|
| Services billed to Medicare | 510 |
| Different services or procedures | 26 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Critical care, first 30-74 minutes (99291)129 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)127 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)46 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)32 services
- Test to examine how well the lungs exchange gases (94729)27 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- COPD54%
- Arthritis52%
- Ischemic heart disease49%
- Anxiety48%
Hospitals where Carissa Monterroso works
Medicare's Facility Affiliation Data lists Carissa Monterroso at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Midstate Medical CenterMeriden, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070017
- The Hospital of Central ConnecticutNew Britain, CT · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 070035
Practice locations
Addresses where Carissa Monterroso is enrolled with Medicare (CMS data updated October 2, 2026).
- 100 Grand StNew Britain, CT 06052 (860) 224‑6623
- 435 Lewis AveMeriden, CT 06451 (203) 694‑8200
- 462 Queen St, Suite 203Southington, CT 06489 (860) 628‑3518
Group practices
Medicare enrollment lists Carissa Monterroso as a member of these groups (CMS data updated October 2, 2026).
- Hartford Healthcare Medical Group Specialists PLLC1,588 clinicians in the group
- The Hospital of Central Connecticut at New Britain General and Bradley399 clinicians in the group
- Midstate Medical Center186 clinicians in the group
Specialties
- Pulmonary Diseaseprimary
- Internal Medicinealso
Other pulmonologists in New Britain
Clinicians with the same Medicare primary specialty in New Britain, CT — not a recommendation.
Other clinicians in Hartford Healthcare Medical Group Specialists PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2014 (12 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1639598154 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians