Manjit S. Grewal, MD

Medicare activity in 2024

Official CMS public-use data for Manjit S. Grewal, 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 hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)510 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)495 services
3. Dialysis services, 4 or more physician visits per month (20 years or older) (90960)393 services
4. Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)363 services
5. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)144 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%
• Chronic kidney disease75%
• Diabetes54%
• Arthritis50%
• Ischemic heart disease47%

Hospitals where Manjit S. Grewal works

Medicare's Facility Affiliation Data lists Manjit S. Grewal 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.

• Ascension Genesys HospitalGrand Blanc, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230197
• Henry Ford Health HospitalDetroit, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230053
• Hurley Medical CenterFlint, MI · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 230132

Practice locations

Addresses where Manjit S. Grewal is enrolled with Medicare (CMS data updated October 2, 2026).

• 208 N Shiawassee StOwosso, MI 48867 (989) 472‑3750
• G3404 Miller RdFlint, MI 48507 (810) 238‑4172

Group practices

Medicare enrollment lists Manjit S. Grewal as a member of this group (CMS data updated October 2, 2026).

• Nephrology and Internal Medicine PC9 clinicians in the group

Specialties

• Nephrologyprimary

Find other Nephrology doctors in Michigan →

Other nephrologists in Owosso

Clinicians with the same Medicare primary specialty in Owosso, MI — not a recommendation.

• Ali Mohammed, MD
• Vaibhav Sahni, MD
• Genevieve Sierminski, MD
• Yaseen A. Hashish, MD

All nephrologists in Owosso →

Other clinicians in Nephrology and Internal Medicine PC

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

• Janet S. Burkhardt
• Ali Mohammed, MD
• Kunal Singh, MD
• Kia L. McAlindon, NP
• Yaseen A. Hashish, MD
• Vaibhav Sahni, MD

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