1. Home
  2. Directory
  3. Michigan
  4. Grand Rapids
  5. Internal Medicine
  6. NPI Profile

DR. AHMAD SAMER AL-HOMSI MD
NPI 1104808047
Internal Medicine - Hematology & Oncology in Grand Rapids, MI

Active since November 16, 2005PECOS EnrolledAccepts Medicare Assignment
84.47/100
CMS Quality Rating
145 MICHIGAN ST NE, SUITE 5200, GRAND RAPIDS, MI 49503(616) 486-5933(616) 486-6489 Get Directions Write a Review

NPPES record last updated: December 6, 2017. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Ahmad Samer Al-homsi Md NPPES

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

DR. AHMAD SAMER AL-HOMSI MD (NPI 1104808047) is an individual hematology & oncology provider in Grand Rapids, Michigan, licensed in Maryland (D84409) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS, is affiliated with North Shore University Hospital, and maintains a secondary practice location in Grand Rapids.

NPPES Registry Identity

NPI1104808047
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameDR. AHMAD SAMER AL-HOMSICredential: MD
Location Address145 MICHIGAN ST NE, SUITE 5200Grand Rapids, MI 49503-2562
Mailing Address9910 Franklin Square Dr Ste 2110Baltimore, MD 21236-4902 · (410) 933-6421 · Fax (410) 933-1390
Phone(616) 486-5933
Fax(616) 486-6489
Sole ProprietorNo
Medical School CMSOtherGraduated 1984
Enumeration DateNovember 16, 2005
Last NPPES UpdateDecember 6, 2017
✔ NPI 1104808047 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in MD · D84409
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
145 MICHIGAN ST NE, Grand Rapids, MI 49503
Open in Google Maps ↗

Secondary Practice Location 1

Location 1145 Michigan St NE, Suite 5200Grand Rapids, MI 49503-2562 · Phone (616) 486-5933 · Fax (616) 486-6489

Other Identifiers 1

OtherD84409MD · Physician License

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. Ahmad Samer Al-homsi Md 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 ID446267512
PECOS Enrollment IDI20170523000025
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

3

Medicare enrollment records show Ahmad Al-homsi reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Johns Hopkins University
524 mi
Neurological Surgery
8600 OLD GEORGETOWN RD
Bethesda, MD 20814
  • Reassigned Medicare billing, Maryland enrollment
  • 4,483 clinicians in this Medicare group
NPI 1578569240 (410) 955-5000
North Shore Health System Medical Faculty Group Practice Inc
635 mi
Hematology & Oncology
450 LAKEVILLE RD
New Hyde Park, NY 11042
  • Reassigned Medicare billing, New York enrollment
  • 198 clinicians in this Medicare group
NPI 1003409061 (516) 734-8900
New York University
1,175 mi
Cardiovascular Disease
3301 QUANTUM BLVD
Boynton Beach, FL 33426
  • Reassigned Medicare billing, New York enrollment
  • 7,712 clinicians in this Medicare group
NPI 1285826438 (877) 648-2964

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

Hospital Affiliations CMS Care Compare 2

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

North Shore University Hospital

Acute Care Hospitals · Manhasset, NY
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330106
Location300 Community DriveManhasset, NY 11030 · Nassau County
Emergency services Birthing friendly

Long Island Jewish Medical Center

Acute Care Hospitals · New Hyde Park, NY
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330195
Location270 - 05 76th AvenueNew Hyde Park, NY 11040 · Nassau County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 49503 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
$166.68 typical visit price
range $54.34 – $166.68
Typical copayment $41.67 (range $13.58 – $41.67)
Most-billed visit code 99205
Established Patient
$96.44 typical visit price
range $17.09 – $135.40
Typical copayment $24.11 (range $4.27 – $33.85)
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.

84.47/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality93.33
Promoting Interoperability100
Improvement Activities40
Cost54.91

Other Providers at the Same Location NPPES 20

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

JAMES D THOMPSON MD
Otolaryngology
145 MICHIGAN ST NE
GRAND RAPIDS, MI 49503
Kent County (616) 267-7758
STEPHANIE F WILLIAMS MD
Internal Medicine (Medical Oncology)
145 MICHIGAN ST NE, SUITE 5200
GRAND RAPIDS, MI 49503
Kent County (616) 486-5933
KELLY ANN CONLEY NP
Nurse Practitioner (Women's Health)
145 MICHIGAN ST NE, SUITE 6300
GRAND RAPIDS, MI 49503
Kent County (616) 486-6000
DR. ROSS SCHULTHEISS PHARM.D.
Pharmacist
145 MICHIGAN ST NE
GRAND RAPIDS, MI 49503
Kent County (616) 977-4840
AMELIA ROSE MROCH MS
Genetic Counselor, MS
145 MICHIGAN ST NE
GRAND RAPIDS, MI 49503
Kent County (616) 486-6218
KRISTIN DIANE BROWN CNS
Registered Nurse (Oncology)
145 MICHIGAN ST NE
GRAND RAPIDS, MI 49503
Kent County (616) 486-5700
DR. GORDON OLIVER DOWNEY M.D.
Obstetrics & Gynecology (Gynecologic Oncology)
145 MICHIGAN ST NE, SUITE 6300
GRAND RAPIDS, MI 49503
Kent County (616) 486-6000
KIMBERLY ANN TEXLEY-QUIGG N.P.
Nurse Practitioner (Women's Health)
145 MICHIGAN ST NE
GRAND RAPIDS, MI 49503
Kent County (616) 486-6333

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 Ahmad Al-homsi's NPI number?

The NPI number for Ahmad Al-homsi is 1104808047. It was assigned to this individual provider in the NPPES registry on November 16, 2005.

Where is Ahmad Al-homsi located?

Ahmad Al-homsi practices at 145 Michigan St NE Suite 5200, Grand Rapids, MI 49503. The listed phone number is (616) 486-5933.

What is Ahmad Al-homsi's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Ahmad Al-homsi enrolled in Medicare?

Yes. Ahmad Al-homsi 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 Ahmad Al-homsi's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ahmad Al-homsi reassigns Medicare benefits to 3 organizations: Johns Hopkins University (Bethesda, MD), North Shore Health System Medical Faculty Group Practice Inc (New Hyde Park, NY) and New York University (Boynton Beach, FL). 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 Ahmad Al-homsi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Ahmad Al-homsi affiliated with any hospitals?

According to CMS data, Ahmad Al-homsi is affiliated with North Shore University Hospital and Long Island Jewish Medical Center.

When was this NPI record last updated?

The NPPES record for Ahmad Al-homsi was last updated on December 6, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.