Zaheer Ahmed, MD

Medicare activity in 2024

Official CMS public-use data for Zaheer Ahmed, 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. Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)617 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)520 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)343 services
4. Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more (99306)108 services
5. Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and (G0180)105 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%
• Arthritis53%
• Anxiety39%
• Diabetes38%
• Depression35%

Hospitals where Zaheer Ahmed works

Medicare's Facility Affiliation Data lists Zaheer Ahmed 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.

• Lowell General HospitalLowell, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220063

Practice locations

Addresses where Zaheer Ahmed is enrolled with Medicare (CMS data updated October 2, 2026).

• 33 Bartlett StLowell, MA 01852 (978) 458‑7000

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in Massachusetts →

Other internal medicine doctors in Lowell

Clinicians with the same Medicare primary specialty in Lowell, MA — not a recommendation.

• Andrew M. Romanowsky, MD
• Upenkumar Patel, MD
• Jack C. Chang, MD
• Michael G. Bertos, MD
• Kabilan Dharmarajan, MD
• Joshua Kuan
• Dimitre T. Sirakov, MD
• Jayaseeli Bastin, MD

All internal medicine doctors in Lowell →

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