Dr. Kathryn Brennick, DO
- Medicare services, 2019
- 385
- Part D claims, 2024
- 300
- Industry payments
- $238
- Medical group
- 1
- Insurance carriers
- 3
- Practice address
- 50 Holy Family Rd, Holyoke, MA 01040
- Practice phone
- Call (800) 400-6354
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mdlive Medical Group
Holyoke, Massachusetts
Find Dr. Brennick's 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. Kathryn Brennick is a hospitalist in Holyoke, Massachusetts
Dr. Brennick practices at Mdlive Medical Group in Holyoke, Massachusetts.
Dr. Brennick's NPI, 1518361047, was assigned on October 13, 2014. Dr. Brennick graduated from LECOM at Seton Hill - Greensburg in 2014. Dr. Brennick holds Florida license OS15379.
- NPI
- 1518361047NPI Registry (opens in a new tab)
- NPI enumeration date
- October 13, 2014
- NPI status
- Active
- Practice phone
- (800) 400-6354
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Kathryn Brennick practices at Mdlive Medical Group in Holyoke, Massachusetts
Dr. Brennick's primary practice is Mdlive Medical Group, at 50 Holy Family Rd, Holyoke, MA 01040 in Hampden County. The practice phone is (800) 400-6354.
- Mdlive Medical Group50 Holy Family Rd, Holyoke, MA 01040 · Hampden CountyPhone(800) 400-6354
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Kathryn Brennick is affiliated with 1 site of care and 1 medical group
Dr. Brennick's primary practice is Mdlive Medical Group in Holyoke, Massachusetts. The medical group on file is Amwell Medical Group (also known as Online Care Group).
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Kathryn Brennick's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Brennick practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mdlive Medical Group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Kathryn Brennick is one of 502 hospitalists in Massachusetts
Hospitalist is Dr. Brennick's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Brennick is board certified in internal medicine by the AOA Board of Internal Medicine. Dmand AI has Dr. Brennick's licenses on file in 2 states: Florida and Mississippi.
Specialties and state licenses
- Hospitalist, FloridaPrimary
- Internal medicine, Mississippi
Hospitalists near Dr. Brennick
Counts of hospitalists 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. Kathryn Brennick billed Medicare for 385 services in 2019
CMS data shows 385 Medicare services from Dr. Brennick across 6 procedure codes in 2019. Medicare paid $26,718 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Brennick's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 5022019: 38523%
Dr. Brennick compared with the Massachusetts median for hospitalists, 2019
- Dr. Brennick
- Massachusetts median
- Medicare services
- 385vs 46417% below
- Part D claims
- 149vs 652.3 times
Medians across 477 hospitalists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Brennick's most billed Medicare procedure codes, 2019
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. Brennick?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Brennick and other hospitalists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Kathryn Brennick's patients have a median age of 47
Across all payers, Dmand AI patient panel data puts Dr. Brennick's median patient age at 47, with 71% women.
Dr. Brennick's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 47
Patient panel by sex, all payers
- Women71%
- Men29%
Source: Dmand AI Patient Panel Data
Dr. Kathryn Brennick wrote 300 Medicare Part D claims in 2024
In 2024, Dr. Brennick wrote 300 Medicare Part D claims for 212 patients. 91% of them were for generic drugs. CMS names the drug for 149 of them, across 4 drugs with 11 or more claims each, at $1,100 in total drug cost. In 2023, CMS named 84 claims across 5 drugs.
Dr. Brennick's Part D claims by kind of drug, 2024
- Generic273 claims91%
- Brand-name and other27 claims9%
Dr. Brennick'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. Brennick's Part D claims, 2024
- Antibiotics46%139 of 300 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: 842024: 14977%
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
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Kathryn Brennick received $238 in industry payments from 2016 to 2019
CMS Open Payments shows 6 general payments to Dr. Brennick from 5 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 100% of the total. Pfizer Inc. paid the most, $130.
General payments to Dr. Brennick by program year, 2016 to 2019
Companies that paid Dr. Brennick the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Kathryn Brennick graduated from LECOM at Seton Hill - Greensburg
Dr. Brennick graduated from LECOM at Seton Hill - Greensburg in 2014.
- Medical school
- Board certified in internal medicine
- Board certified in 2018 - 2026
- Board certified in 2024 - 2026
- Board certified in 2024 - 2025
- Board certified in 2023 - 2026
- Board certified in 2018 - 2018
- Board certified in 2023 - 2027
- Board certified in 2024 - 2026
- Board certified in 2025 - 2026
- Board certified in 2024 - 2027
Source: Dmand AI Professional Profile Data
Dr. Kathryn Brennick accepts plans from 3 insurance carriers
Dr. Brennick is in network with 3 carriers, including United Healthcare, Aetna and DentaQuest. POS plans come from the most carriers, 2. Check the plan with the practice before a visit.
- United Healthcare
- Aetna
- DentaQuest
Plan types Dr. Brennick accepts, by number of carriers
- POS2
- HMO1
- Medicare1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Kathryn Brennick'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 Data |
| 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Kathryn Brennick
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. Kathryn Brennick's NPI number?
Dr. Kathryn Brennick's NPI number is 1518361047. It was assigned on October 13, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Kathryn Brennick?
Dr. Kathryn Brennick is a hospitalist in Holyoke, Massachusetts. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Kathryn Brennick practice?
Dr. Brennick practices at 50 Holy Family Rd, Holyoke, MA 01040. Dr. Brennick's primary practice is Mdlive Medical Group in Holyoke, Massachusetts.
What is Dr. Kathryn Brennick's office phone number?
The practice phone on file for Dr. Brennick is (800) 400-6354.
What is Dr. Kathryn Brennick's medical license number?
Dr. Brennick holds Florida license OS15379, one of the licenses on file in 2 states.
Which states has Dr. Kathryn Brennick been licensed in?
Dmand AI has state licenses on file for Dr. Brennick in Florida and Mississippi.
What medical group is Dr. Kathryn Brennick part of?
Dr. Brennick is linked to Amwell Medical Group (also known as Online Care Group).
Does Dr. Kathryn Brennick accept Medicare?
Yes. CMS data shows Dr. Brennick billed Medicare for 385 services in 2019.
Is Dr. Kathryn Brennick board certified?
Yes. Dr. Brennick is board certified in internal medicine by the AOA Board of Internal Medicine.
What services does Dr. Kathryn Brennick bill to Medicare?
In 2019, Dr. Brennick's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99239) and hospital inpatient care (99225).
Show 5 more questionsShow fewer questions
Where did Dr. Kathryn Brennick go to medical school?
Dr. Brennick graduated from LECOM at Seton Hill - Greensburg in 2014.
What drugs does Dr. Kathryn Brennick prescribe most?
In 2024 Medicare Part D data, Dr. Brennick's most prescribed drugs by claims were Prednisone, Amoxicillin-Clavulanate Potass and Doxycycline Monohydrate.
Has Dr. Kathryn Brennick received payments from drug or device companies?
CMS Open Payments shows $238 in general payments to Dr. Brennick from 5 companies from 2016 to 2019. The largest total came from Pfizer Inc.
How long has Dr. Kathryn Brennick been practicing?
Dr. Brennick graduated from medical school in 2014, 12 years ago.
What insurance does Dr. Kathryn Brennick accept?
Dr. Brennick is in network with 3 carriers, including United Healthcare, Aetna and DentaQuest. POS plans come from the most carriers, 2. Check the plan with the practice before a visit.
Selling to hospitalist practices?
See hospitalists in Massachusetts by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card