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DR. BASSAM HOSSAIN D.O.
NPI 1164876389
Internal Medicine in Stony Brook, NY

Active since April 14, 2016PECOS EnrolledAccepts Medicare Assignment
88.52/100
CMS Quality Rating
8 MOSSHILL PL, STONY BROOK, NY 11790(516) 838-9955(607) 763-5064 Get Directions Write a Review

NPPES record last updated: April 26, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 26, 2024, Sep 18, 2019 (2 updates tracked since 2019).

About Dr. Bassam Hossain D.o. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. BASSAM HOSSAIN D.O. (NPI 1164876389) is an individual internal medicine provider in Stony Brook, New York, licensed in New York (300646) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS, is affiliated with Westchester Medical Center, and is a graduate of Other (2016).

NPPES Registry Identity

NPI1164876389
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. BASSAM HOSSAINCredential: D.O.
Location Address8 MOSSHILL PLStony Brook, NY 11790-2919
Mailing Address33 Lewis Rd Ste 2Binghamton, NY 13905-1040 · (607) 729-8156
Phone(516) 838-9955
Fax(607) 763-5064
Sole ProprietorNo
Medical School CMSOtherGraduated 2016
Enumeration DateApril 14, 2016
Last NPPES UpdateApril 26, 20242 updates tracked since enumeration
NPPES CertifiedApril 26, 2024
✔ NPI 1164876389 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in NY · 300646
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedHospitalistTaxonomy 208M00000X · License 300646 (NY)
8 MOSSHILL PL, Stony Brook, NY 11790
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Bassam Hossain D.o. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2163753351
PECOS Enrollment IDI20191021000912
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

11

Medicare enrollment records show Bassam Hossain reassigns Medicare billing to 11 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Bassam Hossain Do PLLC
Same address
Clinic/Center
8 MOSSHILL PL
Stony Brook, NY 11790
  • Reassigned Medicare billing, New York enrollment
NPI 1033985890 (516) 838-9955
Southwest Suffolk, P.C
4.9 mi
Family Medicine
48 ROUTE 25A, SUITE 210
Smithtown, NY 11787
  • Reassigned Medicare billing, New York enrollment
  • Medicare enrollment name: Southwest Suffolk Medical PC
  • 348 clinicians in this Medicare group
NPI 1730428467 (631) 465-6225
Cogent Medical Care PC
11 mi
Internal Medicine
101 HOSPITAL RD
East Patchogue, NY 11772
  • Reassigned Medicare billing, New York enrollment
  • 640 clinicians in this Medicare group
NPI 1912941238 (631) 687-4131
North Shore-Lij Medical PC
31 mi
Urology
1010 NORTHERN BLVD STE 110
Great Neck, NY 11021
  • Reassigned Medicare billing, New York enrollment
  • 9,353 clinicians in this Medicare group
NPI 1053688572 (516) 321-7400
Westchester Medical Center Advanced Physician Services PC
38 mi
Anesthesiology
100 WOODS RD, TAYLOR PAVILION - ROOM M229
Valhalla, NY 10595
  • Reassigned Medicare billing, New York enrollment
  • 1,663 clinicians in this Medicare group
NPI 1740687458 (914) 493-2844
Wellness Np In Community Health P.C.
46 mi
Family Medicine
3215 AVENUE H BROOKLYN, NY 11210, SUITE 1P
Brooklyn, NY 11210
  • Reassigned Medicare billing, New York enrollment
  • 2 clinicians in this Medicare group
NPI 1902565211 (718) 717-2278
New York Medical Physician Associates PC
71 mi
Hospitalist
241 NORTH RD
Poughkeepsie, NY 12601
  • Reassigned Medicare billing, New York enrollment
  • 304 clinicians in this Medicare group
NPI 1578316501 (845) 483-5000
Atlantic Professional Services Of Rhode Island Incorporated
93 mi
Hospitalist
100 KENYON AVENUE
Wakefield, RI 02879
  • Reassigned Medicare billing, New York enrollment
  • 28 clinicians in this Medicare group
NPI 1922036946 (401) 782-8000
Mikram Jafri MD PC
135 mi
Internal Medicine
100 NEW TURNPIKE RD
Troy, NY 12182
  • Reassigned Medicare billing, New York enrollment
  • 19 clinicians in this Medicare group
NPI 1831800747 (518) 235-1410
United Medical Associates PC
170 mi
Clinic/Center
33 LEWIS ROAD, 2ND FLOOR
Binghamton, NY 13905
  • Reassigned Medicare billing, New York enrollment
  • 528 clinicians in this Medicare group
NPI 1013972801 (607) 770-0025

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 8

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more 99308
A follow-up nursing facility visit per day is a daily check-up service provided by healthcare professionals. It lasts around 15 minutes and involves assessing your health status, monitoring your recovery progress, and addressing any concerns you may have about your health or treatment.
1,102 services14 patients
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309
A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.
594 services37 patients
Advance care planning, first 30 minutes 99497
Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.
200 services16 patients
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309
A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.
63 services13 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
49 services23 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
38 services20 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Westchester Medical Center

Acute Care Hospitals · Valhalla, NY
1/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number330234
Location100 Woods RdValhalla, NY 10595 · Westchester County
Emergency services Birthing friendly

Good Samaritan Hospital Medical Center

Acute Care Hospitals · West Islip, NY
1/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number330286
Location1000 Montauk HighwayWest Islip, NY 11795 · Suffolk County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11790 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$154.28 typical visit price
range $67.40 – $203.53
Typical copayment $38.57 (range $16.85 – $50.88)
Most-billed visit code 99204
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

88.52/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality78.37
Promoting Interoperability100
Improvement Activities40
Cost76.76

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

BASSAM HOSSAIN DO PLLC
Clinic/Center
8 MOSSHILL PL
STONY BROOK, NY 11790
Suffolk County (516) 838-9955

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Bassam Hossain's NPI number?

The NPI number for Bassam Hossain is 1164876389. It was assigned to this individual provider in the NPPES registry on April 14, 2016.

Where is Bassam Hossain located?

Bassam Hossain practices at 8 Mosshill Pl, Stony Brook, NY 11790. The listed phone number is (516) 838-9955.

What is Bassam Hossain's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Bassam Hossain enrolled in Medicare?

Yes. Bassam Hossain is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Bassam Hossain's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Bassam Hossain reassigns Medicare benefits to 11 organizations: Bassam Hossain Do PLLC (Stony Brook, NY), Southwest Suffolk, P.C (Smithtown, NY), Cogent Medical Care PC (East Patchogue, NY), North Shore-Lij Medical PC (Great Neck, NY), Westchester Medical Center Advanced Physician Services PC (Valhalla, NY) and 6 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Bassam Hossain's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Bassam Hossain affiliated with any hospitals?

According to CMS data, Bassam Hossain is affiliated with Westchester Medical Center and Good Samaritan Hospital Medical Center.

When was this NPI record last updated?

The NPPES record for Bassam Hossain was last updated on April 26, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.