Dr. Nicholas Walsh Carrellas, MD

  • Brunswick, ME
  • Emergency medicine physician
NPI1922684604PAC ID7113328170
Medicare services, 2024
97
Medicare patients, 2024
104
Part D claims, 2024
61
Publications
15
MIPS score, 2024
98
Practice address
123 Medical Center Drive, Brunswick, ME 04011
Practice phone
Call (207) 729-0181
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

MaineHealth Mid Coast Hospital

Hospital · Brunswick, Maine

See all 4 affiliations

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Dr. Nicholas Walsh Carrellas is an emergency medicine physician in Brunswick, Maine

Dr. Carrellas practices at MaineHealth Mid Coast Hospital in Brunswick, Maine, part of MaineHealth.

Dr. Carrellas' NPI, 1922684604, was assigned on March 22, 2021. Dr. Carrellas holds Maine license MD27463.

NPI and contact details
Medicare PAC ID
7113328170
NPI enumeration date
March 22, 2021
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(207) 729-0181
Professional email
Get email
Personal email
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Mobile number
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Sex
Male
Estimated age
31
Medical school graduation
2021

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

Dr. Nicholas Walsh Carrellas practices at MaineHealth Mid Coast Hospital in Brunswick, Maine

Dr. Carrellas' primary practice is MaineHealth Mid Coast Hospital, at 123 Medical Center Drive, Brunswick, ME 04011 in Cumberland County. The practice phone is (207) 729-0181.

Source: Dmand AI Affiliation Data

Dr. Nicholas Walsh Carrellas is affiliated with 2 sites of care and 2 medical groups

Dr. Carrellas' primary practice is MaineHealth Mid Coast Hospital in Brunswick, Maine, part of MaineHealth. The medical group on file is MaineHealth Primary Care - Family Medicine - Portland. Dmand AI also links Dr. Carrellas to 1 more clinical lab and 1 medical group, each named with a free account.

See all 4 affiliations for Dr. Carrellas

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

Dmand AI tracks the EHR system at Dr. Nicholas Walsh Carrellas' practice

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

EHR by site
SiteEHR vendor and product
MaineHealth Mid Coast HospitalAvailable 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. Nicholas Walsh Carrellas is one of 410 emergency medicine physicians in Maine

Emergency medicine is Dr. Carrellas' primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Carrellas is licensed in Maine.

Specialties and state licenses

  • Emergency medicine, MainePrimaryLicense MD27463 · taxonomy 207P00000X

Emergency medicine physicians near Dr. Carrellas

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. Nicholas Walsh Carrellas billed Medicare for 97 services in 2024

CMS data shows 97 Medicare services from Dr. Carrellas across 3 procedure codes in 2024, for 104 Medicare patients. Medicare paid $10,445 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 202497
Medicare patients104
Paid by Medicare$10,445
Procedure codes3

Dr. Carrellas' Medicare services by type, 2024

  1. Office and hospital visits86
  2. Tests and treatments11

Dr. Carrellas compared with the Maine median for emergency medicine physicians, 2024

  • Dr. Carrellas
  • Maine median
Medicare services
97vs 18447% below
Medicare patients
104vs 19547% below
Part D claims
12vs 5879% below

Medians across 426 emergency medicine physicians in Maine with Dmand AI profiles that report each measure.

Dr. Carrellas' 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. Carrellas

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

Dr. Nicholas Walsh Carrellas treated 104 Medicare patients in 2024, average age 70

CMS counts 104 Medicare patients who saw Dr. Carrellas in 2024. The largest group is 65 to 74, with 34 patients. 74% of them have high blood pressure, and 70% have high cholesterol. 45% are also on Medicaid. Their average risk score is 1.84, 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. Carrellas' median patient age at 68, with 52% women.

Medicare patients, 2024104
Average age70
Average risk score1.84
Also on Medicaid45%

Dr. Carrellas' Medicare patients by age, 2024

Dr. Carrellas' Medicare patients by sex, 2024

  • Women6361%
  • Men4139%

Chronic conditions among Dr. Carrellas' Medicare patients, 2024

  1. High blood pressure74%
  2. High cholesterol70%
  3. Anxiety50%
  4. Mood disorders49%
  5. Arthritis47%
  6. Depression43%
  7. Ischemic heart disease36%
  8. Chronic kidney disease32%

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

Dr. Carrellas' patients across all payers

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

Patient panel by age, all payers

Median age 68

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. Nicholas Walsh Carrellas wrote 61 Medicare Part D claims in 2024

In 2024, Dr. Carrellas wrote 61 Medicare Part D claims for 48 patients. 93% of them were for generic drugs. CMS names the drug for 12 of them, across 1 drug with 11 or more claims each, at $36 in total drug cost.

Part D claims, 202461
Drugs named by CMS1
Total drug cost$36
Part D patients48

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

  • Generic57 claims93%
  • Brand-name and other4 claims7%

Dr. Carrellas' most prescribed drugs by claims, 2023

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. Carrellas' Part D claims, 2024

  • Opioids20%12 of 61 claims
  • Antibiotics34%21 of 61 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

See all prescribing by Dr. Carrellas

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. Nicholas Walsh Carrellas scored 98 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 98 out of 100 for Dr. Carrellas for performance year 2024, reported through an alternative payment model (APM). Dr. Carrellas accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Dr. Carrellas' MIPS scores, performance year 2024

  • 98of 100Final score
  • 83.3of 100Quality
  • 100of 100Promoting Interoperability
  • 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. Nicholas Walsh Carrellas has 15 publications on record

Dmand AI links 15 papers to Dr. Carrellas, published from 2015 to 2019. 2016 was the busiest year, with 4. The most frequent topics are Substance-Related Disorders, Bipolar Disorder and Comorbidity. Dr. Carrellas has published most often in Am J Addict. Dr. Carrellas' most frequent co-authors are Timothy Edwin Wilens, MD, Amy M. Yule, MD and John Kelly, MD.

Papers15
Years published2015 to 2019

Dr. Carrellas' papers by year, 2015 to 2019

Topics Dr. Carrellas writes about most

  • Substance-Related Disorders
  • Bipolar Disorder
  • Comorbidity
  • Depressive Disorder, Major
  • Psychiatric Status Rating Scales
  • Alcoholism
  • Attention Deficit Disorder with Hyperactivity
  • Diagnostic and Statistical Manual of Mental Disorders

Dr. Carrellas' most frequent co-authors

Recent publications by Dr. Carrellas

See all 15 publications and co-authors

See who Dr. Carrellas researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Carrellas works with, so you can find a warm path to the right emergency medicine physicians.

How network discovery works

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

Sources for Dr. Nicholas Walsh Carrellas'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)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
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. Nicholas Walsh Carrellas

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. Nicholas Walsh Carrellas' NPI number?

Dr. Nicholas Walsh Carrellas' NPI number is 1922684604. It was assigned on March 22, 2021, and it is active in the NPI Registry.

What kind of doctor is Dr. Nicholas Walsh Carrellas?

Dr. Nicholas Walsh Carrellas is an emergency medicine physician in Brunswick, Maine. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).

Where does Dr. Nicholas Walsh Carrellas practice?

Dr. Carrellas practices at 123 Medical Center Drive, Brunswick, ME 04011. Dr. Carrellas' primary practice is MaineHealth Mid Coast Hospital in Brunswick, Maine, part of MaineHealth. Dmand AI also links Dr. Carrellas to 1 clinical lab and 1 medical group.

What is Dr. Nicholas Walsh Carrellas' office phone number?

The practice phone on file for Dr. Carrellas is (207) 729-0181.

What is Dr. Nicholas Walsh Carrellas' medical license number?

Dr. Carrellas holds Maine license MD27463.

Which hospitals is Dr. Nicholas Walsh Carrellas affiliated with?

Dr. Carrellas practices at MaineHealth Mid Coast Hospital in Brunswick, Maine.

What medical group is Dr. Nicholas Walsh Carrellas part of?

Dr. Carrellas is linked to MaineHealth Primary Care - Family Medicine - Portland. Dmand AI links Dr. Carrellas to 1 more medical group.

Does Dr. Nicholas Walsh Carrellas accept Medicare?

Yes. CMS data shows Dr. Carrellas billed Medicare for 97 services in 2024, and Dr. Carrellas accepts Medicare assignment.

What is Dr. Nicholas Walsh Carrellas' MIPS score?

Dr. Carrellas' MIPS final score for performance year 2024 is 98 out of 100, reported through an alternative payment model (APM).

How many Medicare patients does Dr. Nicholas Walsh Carrellas see?

CMS counts 104 Medicare patients who saw Dr. Carrellas in 2024, with an average age of 70.

Show 5 more questionsShow fewer questions

What services does Dr. Nicholas Walsh Carrellas bill to Medicare?

In 2024, Dr. Carrellas' most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and heart test or procedure (93308).

What drugs does Dr. Nicholas Walsh Carrellas prescribe most?

In 2023 Medicare Part D data, Dr. Carrellas' most prescribed drugs by claims were Oxycodone HCl.

How long has Dr. Nicholas Walsh Carrellas been practicing?

Dr. Carrellas graduated from medical school in 2021, 5 years ago.

Does Dr. Nicholas Walsh Carrellas do research?

Dmand AI links 15 publications to Dr. Carrellas, published from 2015 to 2019.

Who does Dr. Nicholas Walsh Carrellas publish with?

Dr. Carrellas' most frequent co-authors are Timothy Edwin Wilens, MD (7 shared papers), Amy M. Yule, MD (7 shared papers) and John Kelly, MD (2 shared papers).

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