Nicholas Dyson Casscells

  • Washington, DC
  • Orthopedic surgeon
NPI1811330996PAC ID4486984499
Medicare services, 2024
618
Medicare patients, 2024
352
Part D claims, 2024
182
Publications
5
MIPS score, 2024
83
Practice address
3800 Reservoir NW Rd, Washington, DC 20007
Practice phone
Call (202) 444-1400
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Medstar Georgetown Medical Center

Washington, District of Columbia

See all 6 affiliations

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Nicholas Dyson Casscells is an orthopedic surgeon in Washington, District of Columbia

Nicholas Casscells practices at Medstar Georgetown Medical Center in Washington, District of Columbia.

Nicholas Casscells' NPI, 1811330996, was assigned on April 9, 2013. Nicholas Casscells graduated from Sidney Kimmel Medical College at Thomas Jefferson University in 2013. Nicholas Casscells holds District of Columbia license MD047193.

NPI and contact details
Medicare PAC ID
4486984499
NPI enumeration date
April 9, 2013
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(202) 444-1400
Professional email
Get email
Personal email
Get email
Mobile number
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Sex
Male
Estimated age
39
Medical school graduation
2013

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

Nicholas Dyson Casscells practices at Medstar Georgetown Medical Center in Washington, District of Columbia

Nicholas Casscells' primary practice is Medstar Georgetown Medical Center, at 3800 Reservoir NW Rd, Washington, DC 20007 in District Of Columbia County. The practice phone is (202) 444-1400.

  • Medstar Georgetown Medical Center
    3800 Reservoir NW Rd, Washington, DC 20007 · District Of Columbia CountyPhone(202) 444-1400

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Nicholas Dyson Casscells is affiliated with 4 sites of care and 2 medical groups

Nicholas Casscells' primary practice is Medstar Georgetown Medical Center in Washington, District of Columbia. Nicholas Casscells is also affiliated with MedStar Georgetown University Hospital. The medical group on file is MedStar Medical Group. Dmand AI also links Nicholas Casscells to 1 more hospital, 1 home health agency and 1 medical group, each named with a free account.

See all 6 affiliations for Nicholas Casscells

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Nicholas Dyson Casscells' practice

Dmand AI tracks the electronic health record (EHR) system at each site where Nicholas Casscells practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Medstar Georgetown Medical CenterAvailable with a free account
+3 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Nicholas Dyson Casscells is one of 60 orthopedic surgeons in District of Columbia

Orthopaedic surgery is Nicholas Casscells' primary specialty in the NPI Registry, under taxonomy code 207X00000X. Nicholas Casscells is board certified in orthopaedic surgery by the American Board of Orthopaedic Surgery. Dmand AI has Nicholas Casscells' licenses on file in 3 states: District of Columbia, Maryland and Virginia.

Specialties and state licenses

  • Orthopaedic surgery, District of ColumbiaPrimaryLicense MD047193 · 2019 to 2027 · taxonomy 207X00000X
  • Maryland license2019 to 2026
  • Virginia license2014 to 2026

Clinical focus

Dmand AI lists arthritis, broken or dislocated ankle/ or foot, enthesopathy in foot or ankle, fluid in a joint, joint or bone infection, knee injury, leg, ankle or foot fracture and lower back pain among the conditions Nicholas Casscells treats.

Orthopedic surgeons near Nicholas Casscells

Counts of orthopedic surgeons 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

Nicholas Dyson Casscells billed Medicare for 618 services in 2024

CMS data shows 618 Medicare services from Nicholas Casscells across 6 procedure codes in 2024, for 352 Medicare patients. Medicare paid $46,868 for them.

Medicare services, 2024618
Medicare patients352
Paid by Medicare$46,868
Procedure codes6

Nicholas Casscells' Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 4972024: 4843%
Drugs given in the office
2023: 882024: 12036%
Surgery
2023: 162024: 1413%

Where Nicholas Casscells' Medicare services took place, 2024

  • In an office46575%
  • In a facility15325%

Nicholas Casscells compared with the District of Columbia median for orthopedic surgeons, 2024

  • Nicholas Casscells
  • District of Columbia median
Medicare services
618vs 600Close to median
Medicare patients
352vs 28922% above
Part D claims
144vs 8471% above

Medians across 57 orthopedic surgeons in District of Columbia with Dmand AI profiles that report each measure.

Nicholas Casscells' 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 Nicholas Casscells

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Medicare shows one payer. Book a meeting to get commercial claims data for Nicholas Casscells and other orthopedic surgeons in District of Columbia.

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

Nicholas Dyson Casscells treated 352 Medicare patients in 2024, average age 72

CMS counts 352 Medicare patients who saw Nicholas Casscells in 2024. The largest group is 65 to 74, with 184 patients. 70% of them have arthritis, and 70% have high cholesterol. 18% 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 Nicholas Casscells' median patient age at 46, with 60% women.

Medicare patients, 2024352
Average age72
Average risk score1.09
Also on Medicaid18%

Nicholas Casscells' Medicare patients by age, 2024

Nicholas Casscells' Medicare patients by sex, 2024

  • Women24670%
  • Men10630%

Chronic conditions among Nicholas Casscells' Medicare patients, 2024

  1. Arthritis70%
  2. High cholesterol70%
  3. High blood pressure61%
  4. Osteoporosis23%
  5. Diabetes22%
  6. Mood disorders21%
  7. Ischemic heart disease20%
  8. Anxiety19%

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

Nicholas Casscells' patients across all payers

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

Patient panel by age, all payers

Median age 46

Patient panel by sex, all payers

  • Women60%
  • Men38%

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

Nicholas Dyson Casscells wrote 182 Medicare Part D claims in 2024

In 2024, Nicholas Casscells wrote 182 Medicare Part D claims for 81 patients. 99% of them were for generic drugs. CMS names the drug for 144 of them, across 5 drugs with 11 or more claims each, at $948 in total drug cost. In 2023, CMS named 55 claims across 1 drug.

Part D claims, 2024182
Drugs named by CMS5
Total drug cost$948
Part D patients81

Nicholas Casscells' Part D claims by kind of drug, 2024

  • Generic180 claims99%
  • Brand-name and other2 claims1%

Nicholas Casscells' 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 Nicholas Casscells' Part D claims, 2024

  • Opioids13%24 of 182 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: 552024: 144162%

Drugs named by CMS: 5 in 2024, 1 in 2023.

See all prescribing by Nicholas Casscells

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

Nicholas Dyson Casscells scored 83 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 83 out of 100 for Nicholas Casscells for performance year 2024, reported as part of a group. Nicholas Casscells accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Nicholas Casscells as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Nicholas Casscells' MIPS scores, performance year 2024

  • 83of 100Final score
  • 72.9of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 68of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)

Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)

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Nicholas Dyson Casscells has 5 publications on record

Dmand AI links 5 papers to Nicholas Casscells, published from 2010 to 2021. 2015 was the busiest year, with 2. Nicholas Casscells' most frequent co-authors are Evan Henry Argintar, MD, Eleanor Aubrey Belilos and Laura Elizabeth Keeling, MD.

Papers5
Years published2010 to 2021

Nicholas Casscells' papers by year, 2010 to 2021

Nicholas Casscells' most frequent co-authors

Recent publications by Nicholas Casscells

See all 5 publications and co-authors

See who Nicholas Casscells researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Nicholas Casscells works with, so you can find a warm path to the right orthopedic surgeons.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Nicholas Dyson Casscells received $3,573 in industry payments from 2016 to 2025

CMS Open Payments shows 48 general payments to Nicholas Casscells from 14 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 72% of the total. Stryker Corporation paid the most, $1,195.

General payments to Nicholas Casscells by program year, 2016 to 2025

General payments to Nicholas Casscells by kind, 2016 to 2025

$3.6Kin total
  • Food and beverage$2,57872%
  • Travel and lodging$99528%

Companies that paid Nicholas Casscells the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Nicholas Casscells

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

Nicholas Dyson Casscells graduated from Sidney Kimmel Medical College at Thomas Jefferson University

Nicholas Casscells graduated from Sidney Kimmel Medical College at Thomas Jefferson University in 2013.

  1. Medical schoolSidney Kimmel Medical College at Thomas Jefferson University
  2. Board certified in orthopaedic surgeryAmerican Board of Orthopaedic Surgery

Source: Dmand AI Professional Profile Data

Nicholas Dyson Casscells accepts plans from 17 insurance carriers

Nicholas Casscells is in network with 17 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.

Plan types Nicholas Casscells accepts, by number of carriers

  1. PPO12
  2. Medicare11
  3. HMO9
  4. POS5
  5. EPO4

Source: Dmand AI Insurance Network Data

Sources for Nicholas Dyson Casscells'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 phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network 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 Nicholas Dyson Casscells

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Nicholas Dyson Casscells' NPI number?

Nicholas Dyson Casscells' NPI number is 1811330996. It was assigned on April 9, 2013, and it is active in the NPI Registry.

What does Nicholas Dyson Casscells specialize in?

Nicholas Dyson Casscells is an orthopedic surgeon in Washington, District of Columbia. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).

Where does Nicholas Dyson Casscells practice?

Nicholas Casscells practices at 3800 Reservoir NW Rd, Washington, DC 20007. Nicholas Casscells' primary practice is Medstar Georgetown Medical Center in Washington, District of Columbia. Dmand AI also links Nicholas Casscells to 1 hospital, 1 home health agency and 1 medical group.

What is Nicholas Dyson Casscells' office phone number?

The practice phone on file for Nicholas Casscells is (202) 444-1400.

What is Nicholas Dyson Casscells' medical license number?

Nicholas Casscells holds District of Columbia license MD047193, one of the licenses on file in 3 states.

Which states has Nicholas Dyson Casscells been licensed in?

Dmand AI has state licenses on file for Nicholas Casscells in District of Columbia (2019 to 2027), Maryland (2019 to 2026) and Virginia (2014 to 2026).

Which hospitals is Nicholas Dyson Casscells affiliated with?

Nicholas Casscells is affiliated with MedStar Georgetown University Hospital. Dmand AI links Nicholas Casscells to 1 more hospital.

What medical group is Nicholas Dyson Casscells part of?

Nicholas Casscells is linked to MedStar Medical Group. Dmand AI links Nicholas Casscells to 1 more medical group.

Does Nicholas Dyson Casscells accept Medicare?

Yes. CMS data shows Nicholas Casscells billed Medicare for 618 services in 2024, and Nicholas Casscells accepts Medicare assignment.

Does Nicholas Dyson Casscells offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Nicholas Casscells as offering telehealth services.

Show 11 more questionsShow fewer questions

What is Nicholas Dyson Casscells' MIPS score?

Nicholas Casscells' MIPS final score for performance year 2024 is 83 out of 100, reported as part of a group.

How many Medicare patients does Nicholas Dyson Casscells see?

CMS counts 352 Medicare patients who saw Nicholas Casscells in 2024, with an average age of 72.

Is Nicholas Dyson Casscells board certified?

Yes. Nicholas Casscells is board certified in orthopaedic surgery by the American Board of Orthopaedic Surgery.

What services does Nicholas Dyson Casscells bill to Medicare?

In 2024, Nicholas Casscells' most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and injected or infused drug (J3301).

Where did Nicholas Dyson Casscells go to medical school?

Nicholas Casscells graduated from Sidney Kimmel Medical College at Thomas Jefferson University in 2013.

What drugs does Nicholas Dyson Casscells prescribe most?

In 2024 Medicare Part D data, Nicholas Casscells' most prescribed drugs by claims were Meloxicam, Diclofenac Sodium and Celecoxib.

Has Nicholas Dyson Casscells received payments from drug or device companies?

CMS Open Payments shows $3,573 in general payments to Nicholas Casscells from 14 companies from 2016 to 2025. The largest total came from Stryker Corporation.

How long has Nicholas Dyson Casscells been practicing?

Nicholas Casscells graduated from medical school in 2013, 13 years ago.

Does Nicholas Dyson Casscells do research?

Dmand AI links 5 publications to Nicholas Casscells, published from 2010 to 2021.

Who does Nicholas Dyson Casscells publish with?

Nicholas Casscells' most frequent co-authors are Evan Henry Argintar, MD (2 shared papers), Eleanor Aubrey Belilos (1 shared paper) and Laura Elizabeth Keeling, MD (1 shared paper).

What insurance does Nicholas Dyson Casscells accept?

Nicholas Casscells is in network with 17 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.

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