Dr. Joseph Dominic Mack, MD

  • Portland, ME
  • Colorectal surgeon
NPI1114380615PAC ID0244525905
Medicare services, 2024
81
Medicare patients, 2024
89
Part D claims, 2024
86
Publications
2
MIPS score, 2024
98
Practice address
22 Bramhall St, Portland, ME 04102
Practice phone
Call (207) 662-0111
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

MaineHealth Maine Medical Center

Hospital · Portland, Maine

See all 5 affiliations

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Dr. Joseph Dominic Mack is a colorectal surgeon in Portland, Maine

Dr. Mack practices at MaineHealth Maine Medical Center in Portland, Maine, part of MaineHealth.

Dr. Mack's NPI, 1114380615, was assigned on April 1, 2016. Dr. Mack graduated from Tufts University School of Medicine in 2016. Dr. Mack holds Maine license MD25668.

NPI and contact details
Medicare PAC ID
0244525905
NPI enumeration date
April 1, 2016
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(207) 662-0111
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
36
Medical school graduation
2016

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

Dr. Joseph Dominic Mack practices at MaineHealth Maine Medical Center in Portland, Maine

Dr. Mack's primary practice is MaineHealth Maine Medical Center, at 22 Bramhall St, Portland, ME 04102 in Cumberland County. The practice phone is (207) 662-0111.

Source: Dmand AI Affiliation Data

Dr. Joseph Dominic Mack is affiliated with 3 sites of care and 2 medical groups

Dr. Mack's primary practice is MaineHealth Maine Medical Center in Portland, Maine, part of MaineHealth. Dr. Mack is also affiliated with MaineHealth Pen Bay Hospital. The medical group on file is MaineHealth Primary Care - Family Medicine - Portland. Dmand AI also links Dr. Mack to 1 more hospital and 1 medical group, each named with a free account.

See all 5 affiliations for Dr. Mack

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

Dmand AI tracks the EHR system at Dr. Joseph Dominic Mack's practice

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

EHR by site
SiteEHR vendor and product
MaineHealth Maine Medical CenterAvailable with a free account
+2 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Joseph Dominic Mack is one of 10 colorectal surgeons in Maine

Colon and rectal surgery is Dr. Mack's primary specialty in the NPI Registry, under taxonomy code 208C00000X. Dr. Mack is licensed in Maine.

Specialties and state licenses

  • Colon and rectal surgery, MainePrimaryLicense MD25668 · taxonomy 208C00000X

Colorectal surgeons near Dr. Mack

Counts of colorectal 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

Dr. Joseph Dominic Mack billed Medicare for 81 services in 2024

CMS data shows 81 Medicare services from Dr. Mack across 5 procedure codes in 2024, for 89 Medicare patients. Medicare paid $6,877 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 202481
Medicare patients89
Paid by Medicare$6,877
Procedure codes5

Dr. Mack's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 322024: 6397%
Surgery
2023: 112024: 1864%

Dr. Mack compared with the Maine median for colorectal surgeons, 2024

  • Dr. Mack
  • Maine median
Medicare services
81vs 9515% below
Part D claims
77vs 8610% below

Medians across 10 colorectal surgeons in Maine with Dmand AI profiles that report each measure.

Dr. Mack'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.

See all procedures by Dr. Mack

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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Mack and other colorectal surgeons in Maine.

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

Dr. Joseph Dominic Mack treated 89 Medicare patients in 2024, average age 70

CMS counts 89 Medicare patients who saw Dr. Mack in 2024. The largest group is 65 to 74, with 40 patients. 75% of them have high blood pressure, and 64% have high cholesterol. 26% are also on Medicaid. Their average risk score is 1.88, 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. Mack's median patient age at 67, with 45% women.

Medicare patients, 202489
Average age70
Average risk score1.88
Also on Medicaid26%

Dr. Mack's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Mack's Medicare patients by sex, 2024

  • Women3539%
  • Men5461%

Chronic conditions among Dr. Mack's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol64%
  3. Cancer44%
  4. Mood disorders44%
  5. Arthritis39%
  6. Depression37%
  7. Anxiety33%
  8. Ischemic heart disease29%

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

Dr. Mack's patients across all payers

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

Patient panel by age, all payers

Median age 67

Patient panel by sex, all payers

  • Women45%
  • Men53%

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

Dr. Joseph Dominic Mack wrote 86 Medicare Part D claims in 2024

In 2024, Dr. Mack wrote 86 Medicare Part D claims for 39 patients. 98% of them were for generic drugs. CMS names the drug for 77 of them, across 3 drugs with 11 or more claims each, at $753 in total drug cost. In 2023, CMS named 72 claims across 2 drugs.

Part D claims, 202486
Drugs named by CMS3
Total drug cost$753
Part D patients39

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

  • Generic84 claims98%
  • Brand-name and other2 claims2%

Dr. Mack'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. Mack's Part D claims, 2024

  • Antibiotics91%78 of 86 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: 722024: 777%

Drugs named by CMS: 3 in 2024, 2 in 2023.

See all prescribing by Dr. Mack

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. Joseph Dominic Mack 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. Mack for performance year 2024, reported through an alternative payment model (APM). Dr. Mack accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Mack as offering telehealth. CMS counts 34 procedures of colonoscopy by Dr. Mack, more than 56% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Mack's 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.

Where Dr. Mack ranks in Medicare procedure volume

Colonoscopy
56th percentile34 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

Skin biopsy: 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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Dr. Joseph Dominic Mack has 2 publications on record

Dmand AI links 2 papers to Dr. Mack, published from 2020 to 2022. Dr. Mack's most frequent co-authors are Damien W. Carter, MD, Timothy Louis Fitzgerald, MD and Lee D. Hallagan, MD.

Papers2
Years published2020 to 2022

Dr. Mack's most frequent co-authors

Recent publications by Dr. Mack

See all 2 publications and co-authors

See who Dr. Mack researches with

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

How network discovery works

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

Dr. Joseph Dominic Mack received $8,247 in industry payments from 2022 to 2025

CMS Open Payments shows 20 general payments to Dr. Mack from 1 drug or device company from 2022 to 2025. Education make up the largest share, 73% of the total. Intuitive Surgical, Inc. paid the most, $8,247.

General payments to Dr. Mack by program year, 2022 to 2025

General payments to Dr. Mack by kind, 2022 to 2025

$8.2Kin total
  • Education$6,00073%
  • Travel and lodging$1,46618%
  • Food and beverage$7819%

Companies that paid Dr. Mack the most, 2022 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Mack

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

Dr. Joseph Dominic Mack graduated from Tufts University School of Medicine

Dr. Mack graduated from Tufts University School of Medicine in 2016.

  1. Medical schoolTufts University School of Medicine

Source: Dmand AI Professional Profile Data

Sources for Dr. Joseph Dominic Mack'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)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
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. Joseph Dominic Mack

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. Joseph Dominic Mack's NPI number?

Dr. Joseph Dominic Mack's NPI number is 1114380615. It was assigned on April 1, 2016, and it is active in the NPI Registry.

What kind of doctor is Dr. Joseph Dominic Mack?

Dr. Joseph Dominic Mack is a colorectal surgeon in Portland, Maine. The primary specialty in the NPI Registry is Colon & Rectal Surgery Physician (taxonomy code 208C00000X).

Where does Dr. Joseph Dominic Mack practice?

Dr. Mack practices at 22 Bramhall St, Portland, ME 04102. Dr. Mack's primary practice is MaineHealth Maine Medical Center in Portland, Maine, part of MaineHealth. Dmand AI also links Dr. Mack to 1 hospital and 1 medical group.

What is Dr. Joseph Dominic Mack's office phone number?

The practice phone on file for Dr. Mack is (207) 662-0111.

What is Dr. Joseph Dominic Mack's medical license number?

Dr. Mack holds Maine license MD25668.

Which hospitals is Dr. Joseph Dominic Mack affiliated with?

Dr. Mack practices at MaineHealth Maine Medical Center in Portland, Maine. Dr. Mack is also affiliated with MaineHealth Pen Bay Hospital. Dmand AI links Dr. Mack to 1 more hospital.

What medical group is Dr. Joseph Dominic Mack part of?

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

Does Dr. Joseph Dominic Mack accept Medicare?

Yes. CMS data shows Dr. Mack billed Medicare for 81 services in 2024, and Dr. Mack accepts Medicare assignment.

Does Dr. Joseph Dominic Mack offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Mack as offering telehealth services.

What is Dr. Joseph Dominic Mack's MIPS score?

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

Show 8 more questionsShow fewer questions

How many Medicare patients does Dr. Joseph Dominic Mack see?

CMS counts 89 Medicare patients who saw Dr. Mack in 2024, with an average age of 70.

What services does Dr. Joseph Dominic Mack bill to Medicare?

In 2024, Dr. Mack's most billed Medicare services were office visit, established patient (99214), surgery: digestive system (46600) and office visit, new patient (99205).

Where did Dr. Joseph Dominic Mack go to medical school?

Dr. Mack graduated from Tufts University School of Medicine in 2016.

What drugs does Dr. Joseph Dominic Mack prescribe most?

In 2024 Medicare Part D data, Dr. Mack's most prescribed drugs by claims were Neomycin Sulfate, Metronidazole and Amoxicillin-Clavulanate Potass.

Has Dr. Joseph Dominic Mack received payments from drug or device companies?

CMS Open Payments shows $8,247 in general payments to Dr. Mack from 1 company from 2022 to 2025. The largest total came from Intuitive Surgical, Inc.

How long has Dr. Joseph Dominic Mack been practicing?

Dr. Mack graduated from medical school in 2016, 10 years ago.

Does Dr. Joseph Dominic Mack do research?

Dmand AI links 2 publications to Dr. Mack, published from 2020 to 2022.

Who does Dr. Joseph Dominic Mack publish with?

Dr. Mack's most frequent co-authors are Damien W. Carter, MD (1 shared paper), Timothy Louis Fitzgerald, MD (1 shared paper) and Lee D. Hallagan, MD (1 shared paper).

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