Agnieszka E. Grochowalska, MD

Medicare activity in 2024

Official CMS public-use data for Agnieszka E. Grochowalska, 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.

Most frequent services

1. Injection, denosumab, 1 mg (J0897)5,880 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)320 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)147 services
4. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)107 services
5. Injection of drug or substance under skin or into muscle (96372)100 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 cholesterol75%
• High blood pressure71%
• Osteoporosis52%
• Arthritis49%
• Diabetes26%
• Ischemic heart disease26%

Hospitals where Agnieszka E. Grochowalska works

Medicare's Facility Affiliation Data lists Agnieszka E. Grochowalska 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.

• Lawrence & Memorial HospitalNew London, CT · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 070007
• Middlesex HospitalMiddletown, CT · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 070020
• Yale-New Haven HospitalNew Haven, CT · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 070022

Practice locations

Addresses where Agnieszka E. Grochowalska is enrolled with Medicare (CMS data updated October 2, 2026).

• 1952 Whitney Ave, Suite 14Hamden, CT 06517 (203) 776‑4444
• 688 E Main St, Suite 1aBranford, CT 06405 (203) 488‑5885

Group practices

Medicare enrollment lists Agnieszka E. Grochowalska as a member of this group (CMS data updated October 2, 2026).

• Endocrine Assoc of Ct LLC10 clinicians in the group

Specialties

• Endocrinologyprimary

Find other Endocrinology doctors in Connecticut →

Other endocrinologists in Hamden

Clinicians with the same Medicare primary specialty in Hamden, CT — not a recommendation.

• Adam B. Mayerson, MD
• Shilpa Shetty, MD
• Kai H. Yang, MD
• Irina G. Rosewater, MD
• Surani R. Fernando, MD
• Philip A. Goldberg, MD

All endocrinologists in Hamden →

Other clinicians in Endocrine Assoc of Ct LLC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Shilpa Shetty, MD
• Kai H. Yang, MD
• Irina G. Rosewater, MD
• Surani R. Fernando, MD
• Mary Windham, MD
• Karen M. Moriarty, NP

Clinician information

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

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians