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Dr. Daniel Nelson Fish, MD
NPI1659374734PAC ID2860493129
- Medicare services, 2024
- 25,693
- Medicare patients, 2024
- 644
- Part D claims, 2024
- 188
- Publications
- 1
- Hospital affiliations
- 1
- Practice address
- 60 Old New Milford Rd, Brookfield, CT 06804
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Orthopaedic Specialists of Connecticut PC - HOPD
Acute Care Hospital outpatient department · Brookfield, Connecticut
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Dr. Daniel Nelson Fish is an orthopedic surgeon in Brookfield, Connecticut
Dr. Fish practices at Orthopaedic Specialists of Connecticut PC - HOPD in Brookfield, Connecticut.
Dr. Fish's NPI, 1659374734, was assigned on May 23, 2005. Dr. Fish graduated from University of Rochester School of Medicine and Dentistry in 1987. Dr. Fish holds Connecticut license 033073.
NPI and contact details
- NPI
- 1659374734NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2860493129
- NPI enumeration date
- May 23, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Daniel Nelson Fish practices at Orthopaedic Specialists of Connecticut PC - HOPD in Brookfield, Connecticut
Dr. Fish's primary practice is Orthopaedic Specialists of Connecticut PC - HOPD, at 60 Old New Milford Rd, Brookfield, CT 06804.
- Orthopaedic Specialists of Connecticut PC - HOPD60 Old New Milford Rd, Brookfield, CT 06804
Source: Dmand AI Affiliation Data
Dr. Daniel Nelson Fish is affiliated with 4 sites of care and 2 medical groups
Dr. Fish's primary practice is Orthopaedic Specialists of Connecticut PC - HOPD in Brookfield, Connecticut. Dr. Fish is also affiliated with Northwell Danbury Hospital. The medical group on file is Orthopaedic Specialists of Connecticut. Dmand AI also links Dr. Fish to 2 more group practices and clinics and 1 medical group, each named with a free account. Dr. Fish's employer is on file too: a hospital.
Orthopaedic Specialists of Connecticut PC - HOPDPrimary
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Daniel Nelson Fish's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Fish practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Orthopaedic Specialists of Connecticut PC - HOPD | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Daniel Nelson Fish is one of 300 orthopedic surgeons in Connecticut
Orthopaedic surgery is Dr. Fish's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dr. Fish is licensed in Connecticut.
Specialties and state licenses
- Orthopaedic surgery, ConnecticutPrimary
Orthopedic surgeons near Dr. Fish
Counts of orthopedic surgeons with a Dmand AI profile, by place and practice. Each opens the list.
300orthopedic surgeons in Connecticut
3orthopedic surgeons in Brookfield
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Daniel Nelson Fish billed Medicare for 25,693 services in 2024
CMS data shows 25,693 Medicare services from Dr. Fish across 26 procedure codes in 2024, for 644 Medicare patients. Medicare paid $164,372 for them. Every service was in an office.
Medicare services, 202425,693
Medicare patients644
Paid by Medicare$164,372
Procedure codes26
Dr. Fish's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 7,0502024: 23,531234%
- Office and hospital visits
- 2023: 1,0852024: 1,1435%
- Surgery
- 2023: 5002024: 498No change
- Imaging
- 2023: 6192024: 48522%
- Tests and treatments
- 2023: 02024: 36
Dr. Fish compared with the Connecticut median for orthopedic surgeons, 2024
- Dr. Fish
- Connecticut median
- Medicare services
- 25,693vs 86429.7 times
- Medicare patients
- 644vs 2073.1 times
- Part D claims
- 140vs 12215% above
Medians across 297 orthopedic surgeons in Connecticut with Dmand AI profiles that report each measure.
Dr. Fish'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. Fish and other orthopedic surgeons in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Daniel Nelson Fish treated 644 Medicare patients in 2024, average age 76
CMS counts 644 Medicare patients who saw Dr. Fish in 2024. The largest group is 65 to 74, with 277 patients. 75% of them have arthritis, and 75% have high cholesterol. 13% are also on Medicaid. Their average risk score is 1.09, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Fish's median patient age at 65, with 54% women.
Medicare patients, 2024644
Average age76
Average risk score1.09
Also on Medicaid13%
Dr. Fish's Medicare patients by age, 2024
Dr. Fish's Medicare patients by sex, 2024
- Women38660%
- Men25840%
Chronic conditions among Dr. Fish's Medicare patients, 2024
- Arthritis75%
- High cholesterol75%
- High blood pressure70%
- Anxiety28%
- Mood disorders26%
- Diabetes24%
- Ischemic heart disease23%
- Depression22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Fish'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
- Women54%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Daniel Nelson Fish wrote 188 Medicare Part D claims in 2024
In 2024, Dr. Fish wrote 188 Medicare Part D claims for 103 patients. 98% of them were for generic drugs. CMS names the drug for 140 of them, across 4 drugs with 11 or more claims each, at $592 in total drug cost. In 2023, CMS named 106 claims across 3 drugs.
Part D claims, 2024188
Drugs named by CMS4
Total drug cost$592
Part D patients103
Dr. Fish's Part D claims by kind of drug, 2024
- Generic185 claims98%
- Brand-name and other3 claims2%
Dr. Fish'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. Fish's Part D claims, 2024
- Opioids71%134 of 188 claims
- Antibiotics9%16 of 188 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: 1062024: 14032%
Drugs named by CMS: 4 in 2024, 3 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. Daniel Nelson Fish ranks in the 71st percentile for upper limb (arm) arthroscopy (minimally invasive joint repair) in Medicare
Dr. Fish accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 27 procedures of upper limb (arm) arthroscopy (minimally invasive joint repair) by Dr. Fish, more than 71% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Fish ranks in Medicare procedure volume
- Upper limb (arm) arthroscopy (minimally invasive joint repair)
- 71st percentile27 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Lower limb (leg) arthroscopy (minimally invasive joint repair): 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Daniel Nelson Fish has 1 publication on record
Dmand AI links 1 paper to Dr. Fish in 2011. Dr. Fish's most frequent co-authors are Blair A. Keagy, MD, William Arnold Marston, MD and Joshua Mostkoff Unger, MD.
Papers1
Dr. Fish's most frequent co-authors
- Blair A. Keagy, MD1 shared paper
- William Arnold Marston, MD1 shared paper
- Joshua Mostkoff Unger, MD1 shared paper
Recent publications by Dr. Fish
See who Dr. Fish researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Fish works with, so you can find a warm path to the right orthopedic surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Daniel Nelson Fish received $5,844 in industry payments from 2018 to 2025
CMS Open Payments shows 36 general payments to Dr. Fish from 14 drug and device companies from 2018 to 2025. Education make up the largest share, 67% of the total. Arthrex, Inc. paid the most, $3,005.
General payments to Dr. Fish by program year, 2018 to 2025
General payments to Dr. Fish by kind, 2018 to 2025
$5.8Kin total
- Education$3,94267%
- Travel and lodging$95116%
- Food and beverage$95116%
Companies that paid Dr. Fish the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Daniel Nelson Fish graduated from University of Rochester School of Medicine and Dentistry
Dr. Fish graduated from University of Rochester School of Medicine and Dentistry in 1987.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Daniel Nelson Fish'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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Daniel Nelson Fish
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. Daniel Nelson Fish's NPI number?
Dr. Daniel Nelson Fish's NPI number is 1659374734. It was assigned on May 23, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Daniel Nelson Fish?
Dr. Daniel Nelson Fish is an orthopedic surgeon in Brookfield, Connecticut. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. Daniel Nelson Fish practice?
Dr. Fish practices at 60 Old New Milford Rd, Brookfield, CT 06804. Dr. Fish's primary practice is Orthopaedic Specialists of Connecticut PC - HOPD in Brookfield, Connecticut. Dmand AI also links Dr. Fish to 2 group practices and clinics and 1 medical group.
What is Dr. Daniel Nelson Fish's medical license number?
Dr. Fish holds Connecticut license 033073.
Which hospitals is Dr. Daniel Nelson Fish affiliated with?
Dr. Fish is affiliated with Northwell Danbury Hospital.
What medical group is Dr. Daniel Nelson Fish part of?
Dr. Fish is linked to Orthopaedic Specialists of Connecticut. Dmand AI links Dr. Fish to 1 more medical group.
Does Dr. Daniel Nelson Fish accept Medicare?
Yes. CMS data shows Dr. Fish billed Medicare for 25,693 services in 2024, and Dr. Fish accepts Medicare assignment.
How many Medicare patients does Dr. Daniel Nelson Fish see?
CMS counts 644 Medicare patients who saw Dr. Fish in 2024, with an average age of 76.
What services does Dr. Daniel Nelson Fish bill to Medicare?
In 2024, Dr. Fish's most billed Medicare services were injected or infused drug (J1010), injected or infused drug (J7328) and office visit, established patient (99214).
Where did Dr. Daniel Nelson Fish go to medical school?
Dr. Fish graduated from University of Rochester School of Medicine and Dentistry in 1987.
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What drugs does Dr. Daniel Nelson Fish prescribe most?
In 2024 Medicare Part D data, Dr. Fish's most prescribed drugs by claims were Oxycodone-Acetaminophen, Tramadol HCl and Methylprednisolone.
Has Dr. Daniel Nelson Fish received payments from drug or device companies?
CMS Open Payments shows $5,844 in general payments to Dr. Fish from 14 companies from 2018 to 2025. The largest total came from Arthrex, Inc.
How long has Dr. Daniel Nelson Fish been practicing?
Dr. Fish graduated from medical school in 1987, 39 years ago.
Does Dr. Daniel Nelson Fish do research?
Dmand AI links 1 publication to Dr. Fish.
Who does Dr. Daniel Nelson Fish publish with?
Dr. Fish's most frequent co-authors are Blair A. Keagy, MD (1 shared paper), William Arnold Marston, MD (1 shared paper) and Joshua Mostkoff Unger, MD (1 shared paper).
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