Quick answers
- Does Joseph M. Masternick Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says Joseph M. Masternick Jr. 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 Joseph M. Masternick Jr. see?
- In 2024, CMS data shows 24 Original Medicare patients and 184 services for Joseph M. Masternick Jr.. This counts Original Medicare only and measures volume, not quality.
- What is Joseph M. Masternick Jr.'s NPI number?
- 1548240237. 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 Joseph M. Masternick Jr., 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 | 24 |
|---|---|
| Services billed to Medicare | 184 |
| Different services or procedures | 6 |
| Participating Medicare provider | Yes |
| Average age of these patients | 56 |
Most frequent services
- Testing for presence of drug, by chemistry analyzers (80307)81 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)66 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).
- Arthritis58%
- High blood pressure54%
- High cholesterol54%
- Anxiety54%
- Depression50%
Hospitals where Joseph M. Masternick Jr. works
Medicare's Facility Affiliation Data lists Joseph M. Masternick Jr. 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.
- Insight Hospital and Medical Center ColdwaterColdwater, MI · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 230022
- Southeast Michigan Surgical Hospital LLCWarren, MI · Acute Care Hospital · Emergency services: not listed by Medicare · CCN 230264
Practice locations
Addresses where Joseph M. Masternick Jr. is enrolled with Medicare (CMS data updated October 2, 2026).
- 4800 S Saginaw St, Suite 1800Flint, MI 48507
Group practices
Medicare enrollment lists Joseph M. Masternick Jr. as a member of this group (CMS data updated October 2, 2026).
- Jawad a Shah MD PC92 clinicians in the group
Specialties
- Family Practiceprimary
- Addiction Medicinealso
Other family doctors in Flint
Clinicians with the same Medicare primary specialty in Flint, MI — not a recommendation.
Other clinicians in Jawad a Shah MD PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Des Moines University Of Osteopathic Medicine And Health Sciences |
| Graduation year | 1975 (51 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1548240237 |
| 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