Quick answers
- Does Sajjad Hassan accept Medicare assignment?
- Yes. Medicare's clinician data says Sajjad Hassan 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 Sajjad Hassan see?
- In 2024, CMS data shows 916 Original Medicare patients and 2,586 services for Sajjad Hassan. This counts Original Medicare only and measures volume, not quality.
- What is Sajjad Hassan's NPI number?
- 1174999197. 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 Sajjad Hassan, 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 | 916 |
|---|---|
| Services billed to Medicare | 2,586 |
| Different services or procedures | 6 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Immunologic analysis technique on serum (immunofixation) (86334)1,202 services
- Protein measurement, serum (84165)1,068 services
- Immunologic analysis technique on body fluid, other fluids with concentration (86335)143 services
- Mechanical separation of plasma from blood (36514)94 services
- Protein measurement, body fluid (84166)73 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%
- Arthritis52%
- Chronic kidney disease52%
- Heart failure39%
- Diabetes38%
Hospitals where Sajjad Hassan works
Medicare's Facility Affiliation Data lists Sajjad Hassan 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.
- Baystate Franklin Medical CenterGreenfield, MA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 220016
- Baystate Medical CenterSpringfield, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220077
- Baystate Noble HospitalWestfield, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220065
- Baystate Wing HospitalPalmer, MA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 220030
- The Cooley Dickinson Hospital IncNorthampton, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220015
Practice locations
Addresses where Sajjad Hassan is enrolled with Medicare (CMS data updated October 2, 2026).
- 280 Chestnut St, Suite 2Springfield, MA 01199
- 759 Chestnut StSpringfield, MA 01199
Group practices
Medicare enrollment lists Sajjad Hassan as a member of this group (CMS data updated October 2, 2026).
- Baystate Medical Practices Inc1,369 clinicians in the group
Specialties
- Pathologyprimary
Other pathologists in Springfield
Clinicians with the same Medicare primary specialty in Springfield, MA — not a recommendation.
Other clinicians in Baystate Medical Practices Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2005 (21 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1174999197 |
| 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