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Dr. Kathryn Rensenbrink, MD
NPI1124067194PAC ID9638109655
- Medicare services, 2024
- 681
- Medicare patients, 2024
- 217
- Part D claims, 2024
- 6,121
- Publications
- 1
- Hospital affiliations
- 5
- Practice address
- 50 Union Street, Ellsworth, ME 04605
- Practice phone
- Call (207) 667-5311
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Rensenbrink's professional email, personal email and mobile number
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Dr. Kathryn Rensenbrink is an internist in Ellsworth, Maine
Dr. Rensenbrink practices at Northern Light Maine Coast Hospital in Ellsworth, Maine, part of Northern Light Health.
Dr. Rensenbrink's NPI, 1124067194, was assigned on June 5, 2006. Dr. Rensenbrink graduated from University of California, San Francisco School of Medicine in 1992. Dr. Rensenbrink holds Maine license MD13915.
NPI and contact details
- NPI
- 1124067194NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9638109655
- NPI enumeration date
- June 5, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (207) 667-5311
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Kathryn Rensenbrink practices at Northern Light Maine Coast Hospital in Ellsworth, Maine
Dr. Rensenbrink's primary practice is Northern Light Maine Coast Hospital, at 50 Union Street, Ellsworth, ME 04605 in Hancock County. The practice phone is (207) 667-5311.
- Northern Light Maine Coast Hospital50 Union Street, Ellsworth, ME 04605 · Hancock CountyPhone(207) 667-5311
Source: Dmand AI Affiliation Data
Dr. Kathryn Rensenbrink is affiliated with 9 sites of care and 2 medical groups
Dr. Rensenbrink's primary practice is Northern Light Maine Coast Hospital in Ellsworth, Maine, part of Northern Light Health. Dr. Rensenbrink is also affiliated with Northern Light Eastern Maine Medical Center. The medical group on file is Northern Light Maine Coast Hospital. Dmand AI also links Dr. Rensenbrink to 3 more hospitals, 2 home health agencies, 1 group practice or clinic, 1 hospice and 1 medical group, each named with a free account. Dr. Rensenbrink's employer is on file too: a hospital.
Northern Light Eastern Maine Medical CenterNorthern Light Maine Coast Hospital3 hospitalsNames with a free account2 home health agenciesNames with a free account1 group practice or clinicName with a free account1 hospiceName with a free account1 medical groupName with a free accountEmployer: hospitalName with a free account
See all 11 affiliations for Dr. RensenbrinkSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Kathryn Rensenbrink's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Rensenbrink practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northern Light Maine Coast Hospital | Available with a free account |
| +8 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Kathryn Rensenbrink is one of 572 internists in Maine
Internal medicine is Dr. Rensenbrink's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Rensenbrink is licensed in Maine.
Specialties and state licenses
- Internal medicine, MainePrimary
Internists near Dr. Rensenbrink
Counts of internists 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 Rensenbrink billed Medicare for 681 services in 2024
CMS data shows 681 Medicare services from Dr. Rensenbrink across 6 procedure codes in 2024, for 217 Medicare patients. Medicare paid $21,934 for them. Every service was in an office.
Medicare services, 2024681
Medicare patients217
Paid by Medicare$21,934
Procedure codes6
Dr. Rensenbrink's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4112024: 46012%
- Other services
- 2023: 662024: 221235%
Dr. Rensenbrink compared with the Maine median for internists, 2024
- Dr. Rensenbrink
- Maine median
- Medicare services
- 681vs 3142.2 times
- Medicare patients
- 217vs 15441% above
- Part D claims
- 5,368vs 21125.4 times
Medians across 600 internists in Maine with Dmand AI profiles that report each measure.
Dr. Rensenbrink'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.
Need commercial claims for Dr. Rensenbrink?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Rensenbrink and other internists in Maine.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Kathryn Rensenbrink treated 217 Medicare patients in 2024, average age 77
CMS counts 217 Medicare patients who saw Dr. Rensenbrink in 2024. The largest group is 75 to 84, with 103 patients. 66% of them have high blood pressure, and 64% have high cholesterol. 16% are also on Medicaid. Their average risk score is 1.08, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Rensenbrink's median patient age at 74, with 74% women.
Medicare patients, 2024217
Average age77
Average risk score1.08
Also on Medicaid16%
Dr. Rensenbrink's Medicare patients by age, 2024
Dr. Rensenbrink's Medicare patients by sex, 2024
- Women16275%
- Men5525%
Chronic conditions among Dr. Rensenbrink's Medicare patients, 2024
- High blood pressure66%
- High cholesterol64%
- Arthritis47%
- Mood disorders35%
- Depression31%
- Osteoporosis29%
- Anxiety21%
- Diabetes21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Rensenbrink's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women74%
- Men26%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Kathryn Rensenbrink wrote 6,121 Medicare Part D claims in 2024
In 2024, Dr. Rensenbrink wrote 6,121 Medicare Part D claims for 467 patients. 86% of them were for generic drugs. CMS names the drug for 5,368 of them, across 99 drugs with 11 or more claims each, at $553,621 in total drug cost. In 2023, CMS named 5,899 claims across 113 drugs.
Part D claims, 20246,121
Drugs named by CMS99
Total drug cost$553,621
Part D patients467
Dr. Rensenbrink's Part D claims by kind of drug, 2024
- Generic5,272 claims86%
- Brand-name797 claims13%
- Other52 claims1%
Dr. Rensenbrink'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. Rensenbrink's Part D claims, 2024
- Opioids2%146 of 6,121 claims
- Antibiotics2%95 of 6,121 claims
- Antipsychotics, patients 65 and over1%39 of 6,121 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: 5,8992024: 5,3689%
Drugs named by CMS: 99 in 2024, 113 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. Kathryn Rensenbrink offers telehealth to Medicare patients
Dr. Rensenbrink accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Rensenbrink as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Kathryn Rensenbrink has 1 publication on record
Dmand AI links 1 paper to Dr. Rensenbrink. Dr. Rensenbrink's most frequent co-authors are Lise M. Cloutier, MD, John L. Daggett, MD and Christina Anne Kapala, DO.
Papers1
Dr. Rensenbrink's most frequent co-authors
- Lise M. Cloutier, MD1 shared paper
- John L. Daggett, MD1 shared paper
- Christina Anne Kapala, DO1 shared paper
Recent publications by Dr. Rensenbrink
See who Dr. Rensenbrink researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Rensenbrink works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Kathryn Rensenbrink received $12 in industry payments in 2019
CMS Open Payments shows 1 general payment to Dr. Rensenbrink from 1 drug or device company in 2019. Food and beverage make up the largest share, 100% of the total. Amgen Inc. paid the most, $12.
Companies that paid Dr. Rensenbrink the most, 2019 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Kathryn Rensenbrink graduated from University of California, San Francisco School of Medicine
Dr. Rensenbrink graduated from University of California, San Francisco School of Medicine in 1992.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Kathryn Rensenbrink'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 DataDmand AI Org Hierarchy 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) |
| 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. Kathryn Rensenbrink
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 Rensenbrink's NPI number?
Dr. Kathryn Rensenbrink's NPI number is 1124067194. It was assigned on June 5, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Kathryn Rensenbrink?
Dr. Kathryn Rensenbrink is an internist in Ellsworth, Maine. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Kathryn Rensenbrink practice?
Dr. Rensenbrink practices at 50 Union Street, Ellsworth, ME 04605. Dr. Rensenbrink's primary practice is Northern Light Maine Coast Hospital in Ellsworth, Maine, part of Northern Light Health. Dmand AI also links Dr. Rensenbrink to 3 hospitals, 2 home health agencies, 1 group practice or clinic, 1 hospice and 1 medical group.
What is Dr. Kathryn Rensenbrink's office phone number?
The practice phone on file for Dr. Rensenbrink is (207) 667-5311.
What is Dr. Kathryn Rensenbrink's medical license number?
Dr. Rensenbrink holds Maine license MD13915.
Which hospitals is Dr. Kathryn Rensenbrink affiliated with?
Dr. Rensenbrink practices at Northern Light Maine Coast Hospital in Ellsworth, Maine. Dr. Rensenbrink is also affiliated with Northern Light Eastern Maine Medical Center. Dmand AI links Dr. Rensenbrink to 3 more hospitals.
What medical group is Dr. Kathryn Rensenbrink part of?
Dr. Rensenbrink is linked to Northern Light Maine Coast Hospital. Dmand AI links Dr. Rensenbrink to 1 more medical group.
Does Dr. Kathryn Rensenbrink accept Medicare?
Yes. CMS data shows Dr. Rensenbrink billed Medicare for 681 services in 2024, and Dr. Rensenbrink accepts Medicare assignment.
Does Dr. Kathryn Rensenbrink offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Rensenbrink as offering telehealth services.
How many Medicare patients does Dr. Kathryn Rensenbrink see?
CMS counts 217 Medicare patients who saw Dr. Rensenbrink in 2024, with an average age of 77.
Show 7 more questionsShow fewer questions
What services does Dr. Kathryn Rensenbrink bill to Medicare?
In 2024, Dr. Rensenbrink's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and medicare service (G0439).
Where did Dr. Kathryn Rensenbrink go to medical school?
Dr. Rensenbrink graduated from University of California, San Francisco School of Medicine in 1992.
What drugs does Dr. Kathryn Rensenbrink prescribe most?
In 2024 Medicare Part D data, Dr. Rensenbrink's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Lisinopril.
Has Dr. Kathryn Rensenbrink received payments from drug or device companies?
CMS Open Payments shows $12 in general payments to Dr. Rensenbrink from 1 company from 2019 to 2019. The largest total came from Amgen Inc.
How long has Dr. Kathryn Rensenbrink been practicing?
Dr. Rensenbrink graduated from medical school in 1992, 34 years ago.
Does Dr. Kathryn Rensenbrink do research?
Dmand AI links 1 publication to Dr. Rensenbrink.
Who does Dr. Kathryn Rensenbrink publish with?
Dr. Rensenbrink's most frequent co-authors are Lise M. Cloutier, MD (1 shared paper), John L. Daggett, MD (1 shared paper) and Christina Anne Kapala, DO (1 shared paper).
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