Dr. Robert E. Loewenstein, MD

  • Somerville, NJ
  • Emergency medicine physician
NPI1750475687PAC ID1658447248
Medicare services, 2024
832
Medicare patients, 2024
591
Part D claims, 2024
193
MIPS score, 2024
87
Hospital affiliations
2
Practice address
110 Rehill Ave, Somerville, NJ 08876
Practice phone
Call (908) 685-2200
Professional email
Get professional email
Personal email
Get personal email
Mobile number
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Social profiles

Primary practice

Robert Wood Johnson University Hospital Somerset

Hospital · Somerville, New Jersey

See all 4 affiliations

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Dr. Robert E. Loewenstein is an emergency medicine physician in Somerville, New Jersey

Dr. Loewenstein practices at Robert Wood Johnson University Hospital Somerset in Somerville, New Jersey, part of RWJBarnabas Health.

Dr. Loewenstein's NPI, 1750475687, was assigned on October 3, 2006. Dr. Loewenstein graduated from Rutgers New Jersey Medical School in 1996. Dr. Loewenstein holds New Jersey license 25MA07192400.

NPI and contact details
Medicare PAC ID
1658447248
NPI enumeration date
October 3, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(908) 685-2200
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
56
Medical school graduation
1996

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Robert E. Loewenstein practices at Robert Wood Johnson University Hospital Somerset in Somerville, New Jersey

Dr. Loewenstein's primary practice is Robert Wood Johnson University Hospital Somerset, at 110 Rehill Ave, Somerville, NJ 08876 in Somerset County. The practice phone is (908) 685-2200.

Source: Dmand AI Affiliation Data

Dr. Robert E. Loewenstein is affiliated with 2 sites of care and 2 medical groups

Dr. Loewenstein's primary practice is Robert Wood Johnson University Hospital Somerset in Somerville, New Jersey, part of RWJBarnabas Health. Dr. Loewenstein is also affiliated with Heights University Hospital. The medical group on file is RWJBarnabas Health Medical Group. Dmand AI also links Dr. Loewenstein to 1 more medical group, named with a free account.

See all 4 affiliations for Dr. Loewenstein

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Robert E. Loewenstein's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Loewenstein practices, 2 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Robert Wood Johnson University Hospital SomersetAvailable with a free account
+1 more site and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Robert E. Loewenstein is one of 1,548 emergency medicine physicians in New Jersey

Emergency medicine is Dr. Loewenstein's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Loewenstein is licensed in New Jersey.

Specialties and state licenses

  • Emergency medicine, New JerseyPrimaryLicense 25MA07192400 · taxonomy 207P00000X

Emergency medicine physicians near Dr. Loewenstein

Counts of emergency medicine physicians 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. Robert E. Loewenstein billed Medicare for 832 services in 2024

CMS data shows 832 Medicare services from Dr. Loewenstein across 5 procedure codes in 2024, for 591 Medicare patients. Medicare paid $82,877 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024832
Medicare patients591
Paid by Medicare$82,877
Procedure codes5

Dr. Loewenstein's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 5262024: 61517%
Tests and treatments
2023: 2712024: 21720%

Dr. Loewenstein compared with the New Jersey median for emergency medicine physicians, 2024

  • Dr. Loewenstein
  • New Jersey median
Medicare services
832vs 3262.6 times
Medicare patients
591vs 32184% above
Part D claims
55vs 4717% above

Medians across 1,494 emergency medicine physicians in New Jersey with Dmand AI profiles that report each measure.

Dr. Loewenstein'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.

See all procedures by Dr. Loewenstein

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Robert E. Loewenstein treated 591 Medicare patients in 2024, average age 76

CMS counts 591 Medicare patients who saw Dr. Loewenstein in 2024. The largest group is 75 to 84, with 185 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 28% are also on Medicaid. Their average risk score is 2.07, 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. Loewenstein's median patient age at 64, with 53% women.

Medicare patients, 2024591
Average age76
Average risk score2.07
Also on Medicaid28%

Dr. Loewenstein's Medicare patients by age, 2024

Dr. Loewenstein's Medicare patients by sex, 2024

  • Women33056%
  • Men26144%

Chronic conditions among Dr. Loewenstein's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis54%
  4. Ischemic heart disease47%
  5. Anxiety45%
  6. Diabetes44%
  7. Mood disorders43%
  8. Depression38%

Share of Medicare patients with each condition. A patient can have several.

Dr. Loewenstein's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 64

Patient panel by sex, all payers

  • Women53%
  • Men44%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Robert E. Loewenstein wrote 193 Medicare Part D claims in 2024

In 2024, Dr. Loewenstein wrote 193 Medicare Part D claims for 121 patients. 89% of them were for generic drugs. CMS names the drug for 55 of them, across 3 drugs with 11 or more claims each, at $362 in total drug cost. In 2023, CMS named 38 claims across 2 drugs.

Part D claims, 2024193
Drugs named by CMS3
Total drug cost$362
Part D patients121

Dr. Loewenstein's Part D claims by kind of drug, 2024

  • Generic172 claims89%
  • Brand-name and other21 claims11%

Dr. Loewenstein'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. Loewenstein's Part D claims, 2024

  • Antibiotics27%53 of 193 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: 382024: 5545%

Drugs named by CMS: 3 in 2024, 2 in 2023.

See all prescribing by Dr. Loewenstein

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. Robert E. Loewenstein scored 87 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 87 out of 100 for Dr. Loewenstein for performance year 2024, reported as part of a group. Dr. Loewenstein accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Dr. Loewenstein's MIPS scores, performance year 2024

  • 87of 100Final score
  • 76.5of 100Quality
  • 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. Robert E. Loewenstein received $149 in industry payments from 2016 to 2023

CMS Open Payments shows 9 general payments to Dr. Loewenstein from 4 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $87.

General payments to Dr. Loewenstein by program year, 2016 to 2023

Companies that paid Dr. Loewenstein the most, 2016 to 2023

Share is of all general payments to this clinician.

See all payments to Dr. Loewenstein

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Robert E. Loewenstein graduated from Rutgers New Jersey Medical School

Dr. Loewenstein graduated from Rutgers New Jersey Medical School in 1996.

  1. Medical schoolRutgers New Jersey Medical School

Source: Dmand AI Professional Profile Data

Sources for Dr. Robert E. Loewenstein's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Robert E. Loewenstein

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. Robert E. Loewenstein's NPI number?

Dr. Robert E. Loewenstein's NPI number is 1750475687. It was assigned on October 3, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Robert E. Loewenstein?

Dr. Robert E. Loewenstein is an emergency medicine physician in Somerville, New Jersey. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).

Where does Dr. Robert E. Loewenstein practice?

Dr. Loewenstein practices at 110 Rehill Ave, Somerville, NJ 08876. Dr. Loewenstein's primary practice is Robert Wood Johnson University Hospital Somerset in Somerville, New Jersey, part of RWJBarnabas Health. Dmand AI also links Dr. Loewenstein to 1 medical group.

What is Dr. Robert E. Loewenstein's office phone number?

The practice phone on file for Dr. Loewenstein is (908) 685-2200.

What is Dr. Robert E. Loewenstein's medical license number?

Dr. Loewenstein holds New Jersey license 25MA07192400.

Which hospitals is Dr. Robert E. Loewenstein affiliated with?

Dr. Loewenstein practices at Robert Wood Johnson University Hospital Somerset in Somerville, New Jersey. Dr. Loewenstein is also affiliated with Heights University Hospital.

What medical group is Dr. Robert E. Loewenstein part of?

Dr. Loewenstein is linked to RWJBarnabas Health Medical Group. Dmand AI links Dr. Loewenstein to 1 more medical group.

Does Dr. Robert E. Loewenstein accept Medicare?

Yes. CMS data shows Dr. Loewenstein billed Medicare for 832 services in 2024, and Dr. Loewenstein accepts Medicare assignment.

What is Dr. Robert E. Loewenstein's MIPS score?

Dr. Loewenstein's MIPS final score for performance year 2024 is 87 out of 100, reported as part of a group.

How many Medicare patients does Dr. Robert E. Loewenstein see?

CMS counts 591 Medicare patients who saw Dr. Loewenstein in 2024, with an average age of 76.

Show 5 more questionsShow fewer questions

What services does Dr. Robert E. Loewenstein bill to Medicare?

In 2024, Dr. Loewenstein's most billed Medicare services were emergency department visit (99285), heart test or procedure (93042) and emergency department visit (99284).

Where did Dr. Robert E. Loewenstein go to medical school?

Dr. Loewenstein graduated from Rutgers New Jersey Medical School in 1996.

What drugs does Dr. Robert E. Loewenstein prescribe most?

In 2024 Medicare Part D data, Dr. Loewenstein's most prescribed drugs by claims were Cephalexin, Naproxen and Ondansetron HCl.

Has Dr. Robert E. Loewenstein received payments from drug or device companies?

CMS Open Payments shows $149 in general payments to Dr. Loewenstein from 4 companies from 2016 to 2023. The largest total came from Abbvie Inc.

How long has Dr. Robert E. Loewenstein been practicing?

Dr. Loewenstein graduated from medical school in 1996, 30 years ago.

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