Mahmoud Kassir, MD
NPI 1588154322 · Family Medicine Physician · Mattawan, MI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mahmoud Kassir, MD is a Family Medicine Physician provider in Mattawan, MI (NPI 1588154322).
Provider details
- NPI number
- 1588154322
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 4351039636 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
8 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
187 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 154 | $71 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 17 | $49 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 16 | $64 |
Typical Medicare-allowed amounts for these services range $49–$71 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 98 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 182 | 62 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 164 | 25 |
| Levothyroxine Sodium | 140 | 36 |
| Amlodipine Besylate | 126 | 37 |
| Lisinopril | 118 | 37 |
| Omeprazole | 110 | 36 |
Practice location
Mailing address
Additional practice locations (1)
- 1000 Oakland DrKalamazoo, MI 49008-1282Phone: (269) 349-2641Fax: (269) 488-8172
Registry dates
- Enumerated
- 2018-05-17
- Last updated
- 2022-09-13
- Certified
- 2022-09-13
Frequently asked questions
- What is Mahmoud Kassir's NPI number?
- Mahmoud Kassir's National Provider Identifier (NPI) is 1588154322, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mahmoud Kassir's specialty?
- Mahmoud Kassir is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mahmoud Kassir located?
- Mahmoud Kassir's practice location on file with NPPES is 24466 Red Arrow Hwy, Mattawan, MI 49071-9804.
- What is Mahmoud Kassir's phone number?
- The practice phone number listed in the NPPES registry for Mahmoud Kassir is (269) 668-4180.
- Does Mahmoud Kassir accept Medicare?
- Mahmoud Kassir is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mahmoud Kassir's NPI active?
- Yes — Mahmoud Kassir's NPI (1588154322) is active in the NPPES registry as of the last update on 2022-09-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.