Dr. Arthur Michael Mandelin II, MD, PhD
- Medicare services, 2024
- 87,357
- Medicare patients, 2024
- 556
- Part D claims, 2024
- 2,165
- MIPS score, 2024
- 95
- Hospital affiliations
- 5
- Practice address
- 675 N Saint Clair St Ste 19-100 Suite 19-100, Chicago, IL 60611
- Practice phone
- Call (312) 664-3278
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Northwestern Medical Group
Multi-specialty group site · Chicago, Illinois
Find Dr. Mandelin's professional email, personal email and mobile number
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Dr. Arthur Michael Mandelin II is a rheumatologist in Chicago, Illinois
Dr. Mandelin practices at Northwestern Medical Group in Chicago, Illinois.
Dr. Mandelin's NPI, 1669655569, was assigned on December 13, 2007. Dr. Mandelin holds Illinois license 036-118442.
- NPI
- 1669655569NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1153498555
- NPI enumeration date
- December 13, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (312) 664-3278
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Arthur Michael Mandelin II practices at Northwestern Medical Group in Chicago, Illinois
Dr. Mandelin's primary practice is Northwestern Medical Group, at 675 N Saint Clair St Ste 19-100 Suite 19-100, Chicago, IL 60611. The practice phone is (312) 664-3278.
- Northwestern Medical Group675 N Saint Clair St Ste 19-100 Suite 19-100, Chicago, IL 60611Phone(312) 664-3278
Source: Dmand AI Affiliation Data
Dr. Arthur Michael Mandelin II is affiliated with 6 sites of care and 1 medical group
Dr. Mandelin's primary practice is Northwestern Medical Group in Chicago, Illinois. Dr. Mandelin is also affiliated with Northwestern Memorial Hospital. The medical group on file is Northwestern Medical Faculty Foundation. Dmand AI also links Dr. Mandelin to 4 more hospitals, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Arthur Michael Mandelin II's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mandelin practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwestern Medical Group | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Arthur Michael Mandelin II is one of 285 rheumatologists in Illinois
Rheumatology is Dr. Mandelin's primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dr. Mandelin is licensed in Illinois.
Specialties and state licenses
- Rheumatology, IllinoisPrimary
Rheumatologists near Dr. Mandelin
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. Arthur Michael Mandelin II billed Medicare for 87,357 services in 2024
CMS data shows 87,357 Medicare services from Dr. Mandelin across 29 procedure codes in 2024, for 556 Medicare patients. Medicare paid $1,053,896 for them.
Dr. Mandelin's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 73,7212024: 71,8273%
- Other services
- 2023: 14,7902024: 14,0865%
- Tests and treatments
- 2023: 9562024: 9154%
- Office and hospital visits
- 2023: 3792024: 41610%
- Surgery
- 2023: 1452024: 11322%
- Imaging
- 2023: 202024: 0100%
Where Dr. Mandelin's Medicare services took place, 2024
- In an office87,328100%
- In a facility290%
Dr. Mandelin compared with the Illinois median for rheumatologists, 2024
- Dr. Mandelin
- Illinois median
- Medicare services
- 87,357vs 98788.5 times
- Medicare patients
- 556vs 2622.1 times
- Part D claims
- 1,946vs 1,07781% above
Medians across 290 rheumatologists in Illinois with Dmand AI profiles that report each measure.
Dr. Mandelin'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. Mandelin and other rheumatologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Arthur Michael Mandelin II treated 556 Medicare patients in 2024, average age 72
CMS counts 556 Medicare patients who saw Dr. Mandelin in 2024. The largest group is 65 to 74, with 228 patients. 73% of them have arthritis, and 71% have high cholesterol. 19% are also on Medicaid. Their average risk score is 1.55, 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. Mandelin's median patient age at 68, with 74% women.
Dr. Mandelin's Medicare patients by age, 2024
Dr. Mandelin's Medicare patients by sex, 2024
- Women42777%
- Men12923%
Chronic conditions among Dr. Mandelin's Medicare patients, 2024
- Arthritis73%
- High cholesterol71%
- High blood pressure68%
- Osteoporosis40%
- Ischemic heart disease30%
- Diabetes28%
- Mood disorders26%
- Anxiety25%
Share of Medicare patients with each condition. A patient can have several.
Dr. Mandelin's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women74%
- Men26%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Arthur Michael Mandelin II wrote 2,165 Medicare Part D claims in 2024
In 2024, Dr. Mandelin wrote 2,165 Medicare Part D claims for 285 patients. 75% of them were for generic drugs. CMS names the drug for 1,946 of them, across 39 drugs with 11 or more claims each, at $2,531,289 in total drug cost. In 2023, CMS named 1,784 claims across 34 drugs.
Dr. Mandelin's Part D claims by kind of drug, 2024
- Generic1,630 claims75%
- Brand-name and other535 claims25%
Dr. Mandelin'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. Mandelin's Part D claims, 2024
- Opioids13%274 of 2,165 claims
- Antibiotics1%12 of 2,165 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: 1,7842024: 1,9469%
Drugs named by CMS: 39 in 2024, 34 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. Arthur Michael Mandelin II scored 95 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 95 out of 100 for Dr. Mandelin for performance year 2024, reported through an alternative payment model (APM). Dr. Mandelin accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Mandelin as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Mandelin's MIPS scores, performance year 2024
- 95of 100Final score
- 83of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Arthur Michael Mandelin II received $450,533 in industry payments from 2016 to 2025
CMS Open Payments shows 684 general payments to Dr. Mandelin from 22 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 68% of the total. Pfizer Inc. paid the most, $217,097.
General payments to Dr. Mandelin by program year, 2016 to 2025
General payments to Dr. Mandelin by kind, 2016 to 2025
- Speaker and faculty fees$307,61368%
- Travel and lodging$56,85313%
- Honoraria$42,85410%
- Consulting fees$26,5666%
- Other$16,6474%
Companies that paid Dr. Mandelin the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Arthur Michael Mandelin II'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 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Arthur Michael Mandelin II
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. Arthur Michael Mandelin II's NPI number?
Dr. Arthur Michael Mandelin II's NPI number is 1669655569. It was assigned on December 13, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Arthur Michael Mandelin II?
Dr. Arthur Michael Mandelin II is a rheumatologist in Chicago, Illinois. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).
Where does Dr. Arthur Michael Mandelin II practice?
Dr. Mandelin practices at 675 N Saint Clair St Ste 19-100 Suite 19-100, Chicago, IL 60611. Dr. Mandelin's primary practice is Northwestern Medical Group in Chicago, Illinois. Dmand AI also links Dr. Mandelin to 4 hospitals.
What is Dr. Arthur Michael Mandelin II's office phone number?
The practice phone on file for Dr. Mandelin is (312) 664-3278.
What is Dr. Arthur Michael Mandelin II's medical license number?
Dr. Mandelin holds Illinois license 036-118442.
Which hospitals is Dr. Arthur Michael Mandelin II affiliated with?
Dr. Mandelin is affiliated with Northwestern Memorial Hospital. Dmand AI links Dr. Mandelin to 4 more hospitals.
What medical group is Dr. Arthur Michael Mandelin II part of?
Dr. Mandelin is linked to Northwestern Medical Faculty Foundation.
Does Dr. Arthur Michael Mandelin II accept Medicare?
Yes. CMS data shows Dr. Mandelin billed Medicare for 87,357 services in 2024, and Dr. Mandelin accepts Medicare assignment.
Does Dr. Arthur Michael Mandelin II offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Mandelin as offering telehealth services.
What is Dr. Arthur Michael Mandelin II's MIPS score?
Dr. Mandelin's MIPS final score for performance year 2024 is 95 out of 100, reported through an alternative payment model (APM).
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How many Medicare patients does Dr. Arthur Michael Mandelin II see?
CMS counts 556 Medicare patients who saw Dr. Mandelin in 2024, with an average age of 72.
What services does Dr. Arthur Michael Mandelin II bill to Medicare?
In 2024, Dr. Mandelin's most billed Medicare services were injected or infused drug (J3262), medicare temporary code (Q0138) and injected or infused drug (J3380).
What drugs does Dr. Arthur Michael Mandelin II prescribe most?
In 2024 Medicare Part D data, Dr. Mandelin's most prescribed drugs by claims were Methotrexate, Prednisone and Hydroxychloroquine Sulfate.
Has Dr. Arthur Michael Mandelin II received payments from drug or device companies?
CMS Open Payments shows $450,533 in general payments to Dr. Mandelin from 22 companies from 2016 to 2025. The largest total came from Pfizer Inc.
How long has Dr. Arthur Michael Mandelin II been practicing?
Dr. Mandelin graduated from medical school in 2002, 24 years ago.
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