Dr. Steven A. Portney, MD
- Medicare services, 2024
- 418
- Medicare patients, 2024
- 202
- Part D claims, 2024
- 2,427
- Hospital affiliations
- 4
- Industry payments
- $96
- Practice address
- 5701 Bow Pointe Drive, Suite 145, Clarkston, MI 48346
- Practice phone
- Call (847) 875-5107
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Clarkston Surgery Center
Surgery Center - Medicare-Certified · Clarkston, Michigan
Find Dr. Portney's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Steven A. Portney is a rheumatologist in Clarkston, Michigan
Dr. Portney practices at Clarkston Surgery Center in Clarkston, Michigan.
Dr. Portney's NPI, 1609944396, was assigned on December 1, 2006. Dr. Portney graduated from University of Michigan Medical School in 1985. Dr. Portney holds Minnesota license SP057396.
- NPI
- 1609944396NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8426145111
- NPI enumeration date
- December 1, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (847) 875-5107
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Steven A. Portney practices at Clarkston Surgery Center in Clarkston, Michigan
Dr. Portney's primary practice is Clarkston Surgery Center, at 5701 Bow Pointe Drive, Suite 145, Clarkston, MI 48346. The practice phone is (847) 875-5107.
- Clarkston Surgery Center5701 Bow Pointe Drive, Suite 145, Clarkston, MI 48346Phone(847) 875-5107
Source: Dmand AI Affiliation Data
Dr. Steven A. Portney is affiliated with 7 sites of care and 2 medical groups
Dr. Portney's primary practice is Clarkston Surgery Center in Clarkston, Michigan. Dr. Portney is also affiliated with Corewell Health William Beaumont University Hospital. The medical group on file is Newland Medical Associates. Dmand AI also links Dr. Portney to 3 more hospitals, 1 physician office, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Steven A. Portney's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Portney practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Clarkston Surgery Center | Available with a free account |
| +6 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Steven A. Portney is one of 203 rheumatologists in Michigan
Rheumatology is Dr. Portney's primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dr. Portney is licensed in Minnesota.
Specialties and state licenses
- Rheumatology, MinnesotaPrimary
Rheumatologists near Dr. Portney
Counts of rheumatologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Steven A. Portney billed Medicare for 418 services in 2024
CMS data shows 418 Medicare services from Dr. Portney across 5 procedure codes in 2024, all of them office visits, for 202 Medicare patients. Medicare paid $30,708 for them. Every service was in an office.
Dr. Portney's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4472024: 4186%
Dr. Portney compared with the Michigan median for rheumatologists, 2024
- Dr. Portney
- Michigan median
- Medicare services
- 418vs 400Close to median
- Medicare patients
- 202vs 16225% above
- Part D claims
- 2,283vs 1,19990% above
Medians across 198 rheumatologists in Michigan with Dmand AI profiles that report each measure.
Dr. Portney's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Portney and other rheumatologists in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Steven A. Portney treated 202 Medicare patients in 2024, average age 72
CMS counts 202 Medicare patients who saw Dr. Portney in 2024. The largest group is 65 to 74, with 91 patients. 75% of them have arthritis, and 75% have high blood pressure. 23% are also on Medicaid. Their average risk score is 1.57, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Portney's median patient age at 65, with 77% women.
Dr. Portney's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Portney's Medicare patients by sex, 2024
- Women15175%
- Men5125%
Chronic conditions among Dr. Portney's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Diabetes36%
- Chronic kidney disease26%
- Ischemic heart disease26%
- Mood disorders24%
- Anxiety22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Portney's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women77%
- Men23%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Steven A. Portney wrote 2,427 Medicare Part D claims in 2024
In 2024, Dr. Portney wrote 2,427 Medicare Part D claims for 364 patients. 74% of them were for generic drugs. CMS names the drug for 2,283 of them, across 29 drugs with 11 or more claims each, at $3,572,506 in total drug cost. In 2023, CMS named 2,170 claims across 30 drugs.
Dr. Portney's Part D claims by kind of drug, 2024
- Generic1,788 claims74%
- Brand-name639 claims26%
Dr. Portney's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Portney's Part D claims, 2024
- Opioids1%20 of 2,427 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2,1702024: 2,2835%
Drugs named by CMS: 29 in 2024, 30 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Steven A. Portney offers telehealth to Medicare patients
Dr. Portney accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Portney as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Steven A. Portney received $96 in industry payments from 2017 to 2019
CMS Open Payments shows 7 general payments to Dr. Portney from 2 drug and device companies from 2017 to 2019. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $73.
General payments to Dr. Portney by program year, 2017 to 2019
Companies that paid Dr. Portney the most, 2017 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Steven A. Portney graduated from University of Michigan Medical School
Dr. Portney graduated from University of Michigan Medical School in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Steven A. Portney's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Steven A. Portney
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Steven A. Portney's NPI number?
Dr. Steven A. Portney's NPI number is 1609944396. It was assigned on December 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Steven A. Portney?
Dr. Steven A. Portney is a rheumatologist in Clarkston, Michigan. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).
Where does Dr. Steven A. Portney practice?
Dr. Portney practices at 5701 Bow Pointe Drive, Suite 145, Clarkston, MI 48346. Dr. Portney's primary practice is Clarkston Surgery Center in Clarkston, Michigan. Dmand AI also links Dr. Portney to 3 hospitals, 1 physician office, 1 group practice or clinic and 1 medical group.
What is Dr. Steven A. Portney's office phone number?
The practice phone on file for Dr. Portney is (847) 875-5107.
What is Dr. Steven A. Portney's medical license number?
Dr. Portney holds Minnesota license SP057396.
Which hospitals is Dr. Steven A. Portney affiliated with?
Dr. Portney is affiliated with Corewell Health William Beaumont University Hospital. Dmand AI links Dr. Portney to 3 more hospitals.
What medical group is Dr. Steven A. Portney part of?
Dr. Portney is linked to Newland Medical Associates. Dmand AI links Dr. Portney to 1 more medical group.
Does Dr. Steven A. Portney accept Medicare?
Yes. CMS data shows Dr. Portney billed Medicare for 418 services in 2024, and Dr. Portney accepts Medicare assignment.
Does Dr. Steven A. Portney offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Portney as offering telehealth services.
How many Medicare patients does Dr. Steven A. Portney see?
CMS counts 202 Medicare patients who saw Dr. Portney in 2024, with an average age of 72.
Show 5 more questionsShow fewer questions
What services does Dr. Steven A. Portney bill to Medicare?
In 2024, Dr. Portney's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99215) and office visit, established patient (99213).
Where did Dr. Steven A. Portney go to medical school?
Dr. Portney graduated from University of Michigan Medical School in 1985.
What drugs does Dr. Steven A. Portney prescribe most?
In 2024 Medicare Part D data, Dr. Portney's most prescribed drugs by claims were Methotrexate, Prednisone and Hydroxychloroquine Sulfate.
Has Dr. Steven A. Portney received payments from drug or device companies?
CMS Open Payments shows $96 in general payments to Dr. Portney from 2 companies from 2017 to 2019. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Steven A. Portney been practicing?
Dr. Portney graduated from medical school in 1985, 41 years ago.
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