John N. Grieveson, MD

Medicare activity in 2024

Official CMS public-use data for John N. Grieveson, 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. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)622 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)221 services
3. Blood glucose (sugar) test performed by hand-held instrument (82962)215 services
4. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)139 services
5. Telephone medical discussion with physician, 11-20 minutes (99442)65 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 cholesterol68%
• Arthritis47%
• Diabetes45%
• Chronic kidney disease41%
• Depression31%

Hospitals where John N. Grieveson works

Medicare's Facility Affiliation Data lists John N. Grieveson 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 John N. Grieveson is enrolled with Medicare (CMS data updated October 2, 2026).

• 817 Merrimack St, Suite 8aLowell, MA 01854 (978) 453‑0550

Group practices

Medicare enrollment lists John N. Grieveson as a member of this group (CMS data updated October 2, 2026).

• Lowell Family Medical Care PC2 clinicians in the group

Specialties

• Family Practiceprimary

Find other Family Practice doctors in Massachusetts →

Other family doctors in Lowell

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

• Janis Samantha Recto, MD
• Christen Fragala, MD
• Michelle Melchiorre, MD
• Frank Osborn, MD
• Leigh Weatherly, DO
• Paul F. Koffi, MD
• Yesenia Madore, MD
• Frank Abekah

All family doctors in Lowell →

Other clinicians in Lowell Family Medical Care PC

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

• Jennifer Lau, PA

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