Dr. Justin Nathaniel Dorfman, DO
- Medicare services, 2024
- 5,705
- Medicare patients, 2024
- 390
- Part D claims, 2024
- 3,015
- Hospital affiliations
- 4
- Industry payments
- $25
- Practice address
- 5 Neponset Street, Worcester, MA 01606
- Practice phone
- Call (508) 853-2716
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Reliant Medical Group - Worcester - Neponset Street
Mammography / Breast Imaging Center · Worcester, Massachusetts
Find Dr. Dorfman'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. Justin Nathaniel Dorfman is an internist in Worcester, Massachusetts
Dr. Dorfman practices at Reliant Medical Group - Worcester - Neponset Street in Worcester, Massachusetts.
Dr. Dorfman's NPI, 1053339432, was assigned on July 17, 2006. Dr. Dorfman graduated from Lake Erie College of Osteopathic Medicine, Erie in 2002. Dr. Dorfman holds Massachusetts license 226691.
- NPI
- 1053339432NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2264435403
- NPI enumeration date
- July 17, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (508) 853-2716
- 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. Justin Nathaniel Dorfman practices at Reliant Medical Group - Worcester - Neponset Street in Worcester, Massachusetts
Dr. Dorfman's primary practice is Reliant Medical Group - Worcester - Neponset Street, at 5 Neponset Street, Worcester, MA 01606. The practice phone is (508) 853-2716.
- Reliant Medical Group - Worcester - Neponset Street5 Neponset Street, Worcester, MA 01606Phone(508) 853-2716
Source: Dmand AI Affiliation Data
Dr. Justin Nathaniel Dorfman is affiliated with 7 sites of care and 1 medical group
Dr. Dorfman's primary practice is Reliant Medical Group - Worcester - Neponset Street in Worcester, Massachusetts. Dr. Dorfman is also affiliated with UMass Memorial Medical Center - University Campus. The medical group on file is Reliant Medical Group. Dmand AI also links Dr. Dorfman to 3 more hospitals, 1 group practice or clinic and 1 home health agency, each named with a free account. Dr. Dorfman's employer is on file too: a breast imaging center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Justin Nathaniel Dorfman's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Dorfman practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Reliant Medical Group - Worcester - Neponset Street | Available with a free account |
| +6 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Justin Nathaniel Dorfman is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Dorfman's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Dorfman is board certified in sports medicine by the American Board of Emergency Medicine. Dr. Dorfman is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
Internists near Dr. Dorfman
Counts of internists 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. Justin Nathaniel Dorfman billed Medicare for 5,705 services in 2024
CMS data shows 5,705 Medicare services from Dr. Dorfman across 21 procedure codes in 2024, for 390 Medicare patients. Medicare paid $58,976 for them. Every service was in an office.
Dr. Dorfman's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 1132024: 4,7404095%
- Office and hospital visits
- 2023: 3932024: 3813%
- Lab and pathology
- 2023: 2602024: 2427%
- Other services
- 2023: 1252024: 1261%
- Surgery
- 2023: 1002024: 11313%
- Tests and treatments
- 2023: 562024: 10384%
Dr. Dorfman compared with the Massachusetts median for internists, 2024
- Dr. Dorfman
- Massachusetts median
- Medicare services
- 5,705vs 43113.2 times
- Medicare patients
- 390vs 1942.0 times
- Part D claims
- 2,461vs 4026.1 times
Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Dorfman'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.
Need commercial claims for Dr. Dorfman?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Dorfman and other internists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Justin Nathaniel Dorfman treated 390 Medicare patients in 2024, average age 73
CMS counts 390 Medicare patients who saw Dr. Dorfman in 2024. The largest group is 65 to 74, with 196 patients. 73% of them have high cholesterol, and 63% have arthritis. 17% are also on Medicaid. Their average risk score is 1.10, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Dorfman's median patient age at 60, with 48% women.
Dr. Dorfman's Medicare patients by age, 2024
Dr. Dorfman's Medicare patients by sex, 2024
- Women21756%
- Men17344%
Chronic conditions among Dr. Dorfman's Medicare patients, 2024
- High cholesterol73%
- Arthritis63%
- High blood pressure57%
- Mood disorders29%
- Anxiety24%
- Chronic kidney disease23%
- Depression23%
- Diabetes22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Dorfman's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women48%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Justin Nathaniel Dorfman wrote 3,015 Medicare Part D claims in 2024
In 2024, Dr. Dorfman wrote 3,015 Medicare Part D claims for 414 patients. 91% of them were for generic drugs. CMS names the drug for 2,461 of them, across 57 drugs with 11 or more claims each, at $121,335 in total drug cost. In 2023, CMS named 1,934 claims across 50 drugs.
Dr. Dorfman's Part D claims by kind of drug, 2024
- Generic2,736 claims91%
- Brand-name and other279 claims9%
Dr. Dorfman'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. Dorfman's Part D claims, 2024
- Opioids5%137 of 3,015 claims
- Antibiotics2%53 of 3,015 claims
- Antipsychotics, patients 65 and over0%12 of 3,015 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: 1,9342024: 2,46127%
Drugs named by CMS: 57 in 2024, 50 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. Justin Nathaniel Dorfman offers telehealth to Medicare patients
Dr. Dorfman accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Dorfman as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Justin Nathaniel Dorfman received $25 in industry payments in 2022
CMS Open Payments shows 1 general payment to Dr. Dorfman from 1 drug or device company in 2022. Food and beverage make up the largest share, 100% of the total. Abbott Laboratories paid the most, $25.
Companies that paid Dr. Dorfman the most, 2022 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Justin Nathaniel Dorfman graduated from Lake Erie College of Osteopathic Medicine, Erie
Dr. Dorfman graduated from Lake Erie College of Osteopathic Medicine, Erie in 2002.
- Medical school
- Board certified in sports medicine
- Board certified in family medicine
Source: Dmand AI Professional Profile Data
Sources for Dr. Justin Nathaniel Dorfman'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. Justin Nathaniel Dorfman
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. Justin Nathaniel Dorfman's NPI number?
Dr. Justin Nathaniel Dorfman's NPI number is 1053339432. It was assigned on July 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Justin Nathaniel Dorfman?
Dr. Justin Nathaniel Dorfman is an internist in Worcester, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Justin Nathaniel Dorfman practice?
Dr. Dorfman practices at 5 Neponset Street, Worcester, MA 01606. Dr. Dorfman's primary practice is Reliant Medical Group - Worcester - Neponset Street in Worcester, Massachusetts. Dmand AI also links Dr. Dorfman to 3 hospitals, 1 group practice or clinic and 1 home health agency.
What is Dr. Justin Nathaniel Dorfman's office phone number?
The practice phone on file for Dr. Dorfman is (508) 853-2716.
What is Dr. Justin Nathaniel Dorfman's medical license number?
Dr. Dorfman holds Massachusetts license 226691.
Which hospitals is Dr. Justin Nathaniel Dorfman affiliated with?
Dr. Dorfman is affiliated with UMass Memorial Medical Center - University Campus. Dmand AI links Dr. Dorfman to 3 more hospitals.
What medical group is Dr. Justin Nathaniel Dorfman part of?
Dr. Dorfman is linked to Reliant Medical Group.
Does Dr. Justin Nathaniel Dorfman accept Medicare?
Yes. CMS data shows Dr. Dorfman billed Medicare for 5,705 services in 2024, and Dr. Dorfman accepts Medicare assignment.
Does Dr. Justin Nathaniel Dorfman offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Dorfman as offering telehealth services.
How many Medicare patients does Dr. Justin Nathaniel Dorfman see?
CMS counts 390 Medicare patients who saw Dr. Dorfman in 2024, with an average age of 73.
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Is Dr. Justin Nathaniel Dorfman board certified?
Yes. Dr. Dorfman is board certified in sports medicine by the American Board of Emergency Medicine.
What services does Dr. Justin Nathaniel Dorfman bill to Medicare?
In 2024, Dr. Dorfman's most billed Medicare services were injected or infused drug (J1010), office visit, established patient (99214) and surgery: bones and joints (20610).
Where did Dr. Justin Nathaniel Dorfman go to medical school?
Dr. Dorfman graduated from Lake Erie College of Osteopathic Medicine, Erie in 2002.
What drugs does Dr. Justin Nathaniel Dorfman prescribe most?
In 2024 Medicare Part D data, Dr. Dorfman's most prescribed drugs by claims were Atorvastatin Calcium, Lisinopril and Simvastatin.
Has Dr. Justin Nathaniel Dorfman received payments from drug or device companies?
CMS Open Payments shows $25 in general payments to Dr. Dorfman from 1 company from 2022 to 2022. The largest total came from Abbott Laboratories.
How long has Dr. Justin Nathaniel Dorfman been practicing?
Dr. Dorfman graduated from medical school in 2002, 24 years ago.
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