NPPES file of Aug 9, 2026

Cara Coughlin O'Brien, M.D.

Geriatric Medicine (Internal Medicine) Physician · Milwaukee, WI

Cara Coughlin O'Brien, M.D. is a geriatric medicine (internal medicine) physician with a practice address in Milwaukee, Wisconsin, and NPI 1720407893, issued on Apr 15, 2014. Check the license (Wisconsin 64832, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1720407893
Name
Cara Coughlin O'Brien
Credential
M.D.
Primary taxonomy
Geriatric Medicine (Internal Medicine) Physician 207RG0300X
License number
64832 WI
Self-reported in NPPES; status is on the state search
Practice location
9200 W Wisconsin Ave, Milwaukee, WI 53226
Phone
(414) 805-6850
Enumerated
Apr 15, 2014
Record last updated
Sep 11, 2023
Fax
(414) 805-6851
Medicaid ID
1720407893 WI
Medicare enrollment
Enrolled (PECOS I20180629000475); accepts Medicare assignment
Medical or professional school
University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 2014
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest geriatric medicine (internal medicine) physician records → All 110 in Wisconsin → Look up another NPI →

Also registered at 9200 W Wisconsin Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Shameem Aadam, RPHPharmacist1760755680
  2. Abubaker Abdalla, MDHospitalist Physician1194187617
  3. Sameem Abedin, MDHematology & Oncology Physician1063641157
  4. Lolia Abibo, M.D.Hospitalist Physician1912359795
  5. Haisam Abid, MBBSHospitalist Physician1578083184
  6. Faith Abodunrin, MDHematology & Oncology Physician1437768769

Verify Cara Coughlin O'Brien in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 64832    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Wisconsin license search

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7% more Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024

4,548 Medicare Part D claims for 318 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 88 claims were for opioids.

  1. Cara O'Brien4,548
  2. Specialty average4,246

Most prescribed

  1. Sertraline Hcl294 claims
  2. Amlodipine Besylate289 claims
  3. Levothyroxine Sodium256 claims
  4. Atorvastatin Calcium244 claims
  5. Memantine Hcl213 claims
  6. Mirtazapine175 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through 2 group practices

  1. Froedtert Andthe Medical College OF Wisconsin Community Physicians IncGermantown, WI
  2. The Medical College OF Wisconsin IncMilwaukee, WI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Cara Coughlin O'Brien among 110 geriatric medicine (internal medicine) physician records in Wisconsin

Cara Coughlin O'Brien, M.D. is one of 110 geriatric medicine (internal medicine) physician records with a practice address in Wisconsin. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 75% of them.

  • NPI issued2014 · 75% of these records are older, 23% newer
  • In a Medicare fileYes · 76% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Graduated2014 · median 2006 among the 55 with a school on file
  • Record last updated2023 · 47% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Geriatric Medicine (Internal Medicine) Physician providers in Wisconsin

There are 110 geriatric medicine (internal medicine) physician records in Wisconsin.

All 110 in Wisconsin → Every provider in Milwaukee → Geriatric Medicine (Internal Medicine) Physician nationwide →

The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes

  1. Eric Baeuerle, MD, PHDMilwaukee, WI 532261922748409
  2. Angela Beckert, M.D.Milwaukee, WI 532261831485333
  3. Elizabeth BukowyMilwaukee, WI 532261063839397
  4. Steven Denson, MDMilwaukee, WI 532261912951203
  5. Edmund Duthie, MDMilwaukee, WI 532261174574123
  6. Evan HenricksMilwaukee, WI 532261578094835
  7. Will LyonMilwaukee, WI 532261245791607
  8. Jordan Merkow, MDMilwaukee, WI 532261023505922

Common questions

What is Cara Coughlin O'Brien, M.D.'s NPI number?

Cara Coughlin O'Brien, M.D.'s National Provider Identifier (NPI) is 1720407893, issued on Apr 15, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Cara Coughlin O'Brien, M.D. located?

The NPPES record lists a practice address at 9200 W Wisconsin Ave, Milwaukee, WI, 53226. Phone: (414) 805-6850. Providers update this record themselves, so call before visiting.

How can I verify Cara Coughlin O'Brien, M.D.'s license?

NPPES lists Wisconsin license number 64832, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Cara Coughlin O'Brien, M.D. prescribe under Medicare Part D?

In 2024, Cara Coughlin O'Brien, M.D. had 4,548 Medicare Part D claims for 318 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.