Dr. Joshua D. Marcus, MD
- Medicare services, 2024
- 825
- Medicare patients, 2024
- 304
- Part D claims, 2024
- 156
- Hospital affiliations
- 2
- Industry payments
- $147,785
- Practice address
- 100 Reserve Rd, Danbury, CT 06810
- Practice phone
- Call (203) 739-7742
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Nuvance Health Medical Practice CT, Inc.
Danbury, Connecticut
Find Dr. Marcus' 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. Joshua D. Marcus is a neurosurgeon in Danbury, Connecticut
Dr. Marcus practices at Nuvance Health Medical Practice CT, Inc. in Danbury, Connecticut.
Dr. Marcus' NPI, 1609010719, was assigned on April 21, 2009. Dr. Marcus graduated from New York University Grossman School of Medicine in 2009. Dr. Marcus holds Connecticut license 002188.
- NPI
- 1609010719NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9133417579
- NPI enumeration date
- April 21, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (203) 739-7742
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Joshua D. Marcus practices at Nuvance Health Medical Practice CT, Inc. in Danbury, Connecticut
Dr. Marcus' primary practice is Nuvance Health Medical Practice CT, Inc., at 100 Reserve Rd, Danbury, CT 06810 in Western Ct County. The practice phone is (203) 739-7742.
- Nuvance Health Medical Practice CT, Inc.100 Reserve Rd, Danbury, CT 06810 · Western Ct CountyPhone(203) 739-7742
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Joshua D. Marcus is affiliated with 10 sites of care and 5 medical groups
Dr. Marcus' primary practice is Nuvance Health Medical Practice CT, Inc. in Danbury, Connecticut. Dr. Marcus is also affiliated with Northwell Danbury Hospital. The medical group on file is Yale Health. Dmand AI also links Dr. Marcus to 1 more hospital, 4 group practices and clinics, 4 medical groups, 2 home health agencies and 1 therapy and rehab clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Joshua D. Marcus' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Marcus practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Nuvance Health Medical Practice CT, Inc. | Available with a free account |
| +9 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Joshua D. Marcus is one of 99 neurosurgeons in Connecticut
Neurological surgery is Dr. Marcus' primary specialty in the NPI Registry, under taxonomy code 207T00000X. Dr. Marcus is licensed in Connecticut.
Specialties and state licenses
- Neurological surgery, ConnecticutPrimary
Neurosurgeons near Dr. Marcus
Counts of neurosurgeons 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. Joshua D. Marcus billed Medicare for 825 services in 2024
CMS data shows 825 Medicare services from Dr. Marcus across 25 procedure codes in 2024, for 304 Medicare patients. Medicare paid $211,041 for them.
Dr. Marcus' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 3072024: 45047%
- Office and hospital visits
- 2023: 3642024: 29120%
- Imaging
- 2023: 142024: 84500%
Where Dr. Marcus' Medicare services took place, 2024
- In an office26632%
- In a facility55968%
Dr. Marcus compared with the Connecticut median for neurosurgeons, 2024
- Dr. Marcus
- Connecticut median
- Medicare services
- 825vs 1415.9 times
- Medicare patients
- 304vs 1052.9 times
- Part D claims
- 107vs 303.6 times
Medians across 83 neurosurgeons in Connecticut with Dmand AI profiles that report each measure.
Dr. Marcus' 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. Marcus?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Marcus and other neurosurgeons in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Joshua D. Marcus treated 304 Medicare patients in 2024, average age 74
CMS counts 304 Medicare patients who saw Dr. Marcus in 2024. The largest group is 65 to 74, with 125 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 16% are also on Medicaid. Their average risk score is 1.33, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Marcus' median patient age at 70, with 52% women.
Dr. Marcus' Medicare patients by age, 2024
Dr. Marcus' Medicare patients by sex, 2024
- Women16454%
- Men14046%
Chronic conditions among Dr. Marcus' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis74%
- Anxiety33%
- Ischemic heart disease33%
- Mood disorders31%
- Stroke or TIA30%
- Diabetes27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Marcus' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women52%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Joshua D. Marcus wrote 156 Medicare Part D claims in 2024
In 2024, Dr. Marcus wrote 156 Medicare Part D claims for 77 patients. 90% of them were for generic drugs. CMS names the drug for 107 of them, across 4 drugs with 11 or more claims each, at $10,239 in total drug cost. In 2023, CMS named 116 claims across 5 drugs.
Dr. Marcus' Part D claims by kind of drug, 2024
- Generic140 claims90%
- Brand-name16 claims10%
Dr. Marcus' 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. Marcus' Part D claims, 2024
- Opioids15%24 of 156 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: 1162024: 1078%
Drugs named by CMS: 4 in 2024, 5 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. Joshua D. Marcus ranks in the 91st percentile for laminectomy or laminotomy (partial removal of spine bones) in Medicare
Dr. Marcus accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Marcus as offering telehealth. CMS counts 84 procedures of laminectomy or laminotomy (partial removal of spine bones) by Dr. Marcus, more than 91% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Dr. Marcus ranks in Medicare procedure volume
- Spinal fusion
- 88th percentile179 procedures
- Laminectomy or laminotomy (partial removal of spine bones)
- 91st percentile84 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Joshua D. Marcus received $147,785 in industry payments from 2016 to 2025
CMS Open Payments shows 502 general payments to Dr. Marcus from 35 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 67% of the total. Si-bone, Inc. paid the most, $65,188.
General payments to Dr. Marcus by program year, 2016 to 2025
General payments to Dr. Marcus by kind, 2016 to 2025
- Consulting fees$98,33267%
- Food and beverage$19,29513%
- Speaker and faculty fees$15,60011%
- Travel and lodging$14,52210%
- Education$370%
Companies that paid Dr. Marcus the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Joshua D. Marcus graduated from New York University Grossman School of Medicine
Dr. Marcus graduated from New York University Grossman School of Medicine in 2009.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Joshua D. Marcus'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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)Doctors and Clinicians Utilization Data (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. Joshua D. Marcus
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. Joshua D. Marcus' NPI number?
Dr. Joshua D. Marcus' NPI number is 1609010719. It was assigned on April 21, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Joshua D. Marcus?
Dr. Joshua D. Marcus is a neurosurgeon in Danbury, Connecticut. The primary specialty in the NPI Registry is Neurological Surgery Physician (taxonomy code 207T00000X).
Where does Dr. Joshua D. Marcus practice?
Dr. Marcus practices at 100 Reserve Rd, Danbury, CT 06810. Dr. Marcus' primary practice is Nuvance Health Medical Practice CT, Inc. in Danbury, Connecticut. Dmand AI also links Dr. Marcus to 1 hospital, 4 group practices and clinics, 4 medical groups, 2 home health agencies and 1 therapy and rehab clinic.
What is Dr. Joshua D. Marcus' office phone number?
The practice phone on file for Dr. Marcus is (203) 739-7742.
What is Dr. Joshua D. Marcus' medical license number?
Dr. Marcus holds Connecticut license 002188.
Which hospitals is Dr. Joshua D. Marcus affiliated with?
Dr. Marcus is affiliated with Northwell Danbury Hospital. Dmand AI links Dr. Marcus to 1 more hospital.
What medical group is Dr. Joshua D. Marcus part of?
Dr. Marcus is linked to Yale Health. Dmand AI links Dr. Marcus to 4 more medical groups.
Does Dr. Joshua D. Marcus accept Medicare?
Yes. CMS data shows Dr. Marcus billed Medicare for 825 services in 2024, and Dr. Marcus accepts Medicare assignment.
Does Dr. Joshua D. Marcus offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Marcus as offering telehealth services.
How many Medicare patients does Dr. Joshua D. Marcus see?
CMS counts 304 Medicare patients who saw Dr. Marcus in 2024, with an average age of 74.
Show 5 more questionsShow fewer questions
What services does Dr. Joshua D. Marcus bill to Medicare?
In 2024, Dr. Marcus' most billed Medicare services were office visit, new patient (99204), surgery: bones and joints (22614) and office visit, established patient (99214).
Where did Dr. Joshua D. Marcus go to medical school?
Dr. Marcus graduated from New York University Grossman School of Medicine in 2009.
What drugs does Dr. Joshua D. Marcus prescribe most?
In 2024 Medicare Part D data, Dr. Marcus' most prescribed drugs by claims were Gabapentin, Meloxicam and Methocarbamol.
Has Dr. Joshua D. Marcus received payments from drug or device companies?
CMS Open Payments shows $147,785 in general payments to Dr. Marcus from 35 companies from 2016 to 2025. The largest total came from Si-bone, Inc.
How long has Dr. Joshua D. Marcus been practicing?
Dr. Marcus graduated from medical school in 2009, 17 years ago.
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