SIAMAK GHANBARI ROSTAMABADI MD
NPI 1588801757
Internal Medicine in Dayton, OH
About Siamak Ghanbari Rostamabadi Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SIAMAK GHANBARI ROSTAMABADI MD (NPI 1588801757) is an individual internal medicine provider in Dayton, Ohio, licensed in Ohio (35.093900) and active in the NPI registry since January 2009. He is enrolled in Medicare PECOS, is affiliated with King's Daughters' Medical Center, and maintains a secondary practice location in Ashland.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 1
Accepted Insurance
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
Siamak Ghanbari Rostamabadi 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.
Medicare Billing Reassignments
7Medicare enrollment records show Siamak Ghanbari Rostamabadi reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Lima, OH 45804
- Reassigned Medicare billing, Ohio enrollment
- 84 clinicians in this Medicare group
Ashland, KY 41101
- Reassigned Medicare billing, Kentucky enrollment
- Medicare enrollment name: Kings Daughters Medical Specialties Inc
- 531 clinicians in this Medicare group
Huntington, WV 25703
- Reassigned Medicare billing, Ohio enrollment
- 176 clinicians in this Medicare group
Toledo, OH 43606
- Reassigned Medicare billing, Ohio enrollment
- 29 clinicians in this Medicare group
Lorain, OH 44053
- Reassigned Medicare billing, Ohio enrollment
- 325 clinicians in this Medicare group
Middleburg Heights, OH 44130
- Reassigned Medicare billing, Ohio enrollment
- 144 clinicians in this Medicare group
Ashtabula, OH 44004
- Reassigned Medicare billing, Ohio enrollment
- 272 clinicians in this Medicare group
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
King's Daughters' Medical Center
Acute Care Hospitals · Ashland, KYPikeville Medical Center
Acute Care Hospitals · Pikeville, KYNorton Hospitals, Inc
Acute Care Hospitals · Louisville, KYLima Memorial Health System
Acute Care Hospitals · Lima, OHPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 45409 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
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 Siamak Ghanbari Rostamabadi's NPI number?
The NPI number for Siamak Ghanbari Rostamabadi is 1588801757. It was assigned to this individual provider in the NPPES registry on January 9, 2009.
Where is Siamak Ghanbari Rostamabadi located?
Siamak Ghanbari Rostamabadi practices at 30 E Apple St Suite 6250, Dayton, OH 45409. The listed phone number is (937) 208-8394.
What is Siamak Ghanbari Rostamabadi's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Siamak Ghanbari Rostamabadi enrolled in Medicare?
Yes. Siamak Ghanbari Rostamabadi 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 Siamak Ghanbari Rostamabadi's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Siamak Ghanbari Rostamabadi reassigns Medicare benefits to 7 organizations: Midwest Hospitalist Physicians LLP (Lima, OH), King's Daughters Medical Specialties, Inc. (Ashland, KY), Ohio Valley Physicians Inc (Huntington, WV), Inpatient Consultants Of Ohio, Inc (Toledo, OH), Community Hospitalist, LLC (Lorain, OH) and 2 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 Siamak Ghanbari Rostamabadi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Siamak Ghanbari Rostamabadi accept?
Health plans from Anthem Blue Cross and Blue Shield, Antidote Health Plan of Ohio, Inc., CareSource, MedMutual and Molina Healthcare and 3 other insurers list Siamak Ghanbari Rostamabadi as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Siamak Ghanbari Rostamabadi affiliated with any hospitals?
According to CMS data, Siamak Ghanbari Rostamabadi is affiliated with King's Daughters' Medical Center, Pikeville Medical Center, Norton Hospitals, Inc and Lima Memorial Health System.
When was this NPI record last updated?
The NPPES record for Siamak Ghanbari Rostamabadi was last updated on April 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months 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.
# Siamak Ghanbari Rostamabadi, MD · NPI 1588801757
Internal Medicine physician in Dayton, Ohio. Individual provider, active in the CMS NPPES registry since January 9, 2009.
## Identity
- **NPI:** 1588801757 (Entity type: Individual)
- **Enumerated:** January 9, 2009
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 35.093900 (Ohio)
- **Sole proprietor:** No
## Practice location
- **Address:** 30 E APPLE ST, SUITE 6250, Dayton, OH 45409-2939
- **Phone:** (937) 208-8394 · **Fax:** (937) 208-8388
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 7 organizations under Medicare reassignment (form CMS-855R): Midwest Hospitalist Physicians LLP (NPI 1891242319, Lima, OH); King's Daughters Medical Specialties, Inc. (NPI 1366079543, Ashland, KY); Ohio Valley Physicians Inc (NPI 1962433177, Huntington, WV); Inpatient Consultants Of Ohio, Inc (NPI 1326210121, Toledo, OH); Community Hospitalist, LLC (NPI 1538236872, Lorain, OH); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1996
## Record status
- **NPPES last updated:** April 7, 2026
- **Other identifiers:** Medicaid 2972958 (OH)
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Source: [NPI Profile](https://npiprofile.com/npi/1588801757) · Data from the CMS NPPES public registry.