DR. STEVEN A PORTNEY MD
NPI 1609944396
Internal Medicine - Rheumatology in Bingham Farms, MI
About Dr. Steven A Portney Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. STEVEN A PORTNEY MD (NPI 1609944396) is an individual rheumatology provider in Bingham Farms, Michigan, licensed in Michigan (4301057396) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS, is affiliated with Ascension Providence Hospital, Southfield And Novi, and is a graduate of University Of Michigan Medical School (1985).
NPPES Registry Identity
Specialties & Licenses
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
Dr. Steven A Portney 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
2Medicare enrollment records show Steven Portney reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Bingham Farms, MI 48025
- Reassigned Medicare billing, Michigan enrollment
- 24 clinicians in this Medicare group
Southfield, MI 48075
- Reassigned Medicare billing, Michigan enrollment
- Medicare enrollment name: Henry Ford Health St. John Hospital
- 520 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.
Areas of Expertise CMS Part B claims 5
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.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ascension Providence Hospital, Southfield And Novi
Acute Care Hospitals · Southfield, MIBeaumont Hospital - Dearborn
Acute Care Hospitals · Dearborn, MISaint Joseph Mercy Livingston Hospital
Acute Care Hospitals · Howell, MIBeaumont Hospital Royal Oak
Acute Care Hospitals · Royal Oak, MIBeaumont Hospital - Farmington Hills
Acute Care Hospitals · Farmington Hills, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 48025 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.
Other Providers at the Same Location NPPES 15
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BINGHAM FARMS, MI 48025
BINGHAM FARMS, MI 48025
BINGHAM FARMS, MI 48025
BINGHAM FARMS, MI 48025
BINGHAM FARMS, MI 48025
BINGHAM FARMS, MI 48025
BINGHAM FARMS, MI 48025
BINGHAM FARMS, MI 48025
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 Steven Portney's NPI number?
The NPI number for Steven Portney is 1609944396. It was assigned to this individual provider in the NPPES registry on December 1, 2006.
Where is Steven Portney located?
Steven Portney practices at 31500 Telegraph Rd Ste 225, Bingham Farms, MI 48025. The listed phone number is (248) 552-0620.
What is Steven Portney's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.
Is Steven Portney enrolled in Medicare?
Yes. Steven Portney 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 Steven Portney's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Steven Portney reassigns Medicare benefits to 2 organizations: Newland Medical Associates, P.C. (Bingham Farms, MI) and Ascension St John Hospital (Southfield, MI). 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 Steven Portney's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Steven Portney accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company and 2 other insurers list Steven Portney 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 Steven Portney affiliated with any hospitals?
According to CMS data, Steven Portney is affiliated with Ascension Providence Hospital, Southfield And Novi, Beaumont Hospital - Dearborn, Saint Joseph Mercy Livingston Hospital, Beaumont Hospital Royal Oak and Beaumont Hospital - Farmington Hills.
When was this NPI record last updated?
The NPPES record for Steven Portney was last updated on May 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Dr. Steven A Portney, MD · NPI 1609944396
Rheumatology physician in Bingham Farms, Michigan. Individual provider, active in the CMS NPPES registry since December 1, 2006.
## Identity
- **NPI:** 1609944396 (Entity type: Individual)
- **Enumerated:** December 1, 2006
- **Primary specialty:** Internal Medicine - Rheumatology · taxonomy 207RR0500X
- **State license:** 4301057396 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 31500 TELEGRAPH RD STE 225, Bingham Farms, MI 48025-4315
- **Phone:** (248) 552-0620
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Newland Medical Associates, P.C. (NPI 1952330789, Bingham Farms, MI); Ascension St John Hospital (NPI 1922397058, Southfield, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Michigan Medical School, class of 1985
## Record status
- **NPPES last updated:** May 6, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1609944396) · Data from the CMS NPPES public registry.