Limited public information available
This provider is listed in NPPES, but additional records were not identified in the sources currently connected. Additional information may be available directly from official licensing authorities.
CARA O'BRIEN, M.D.
MILWAUKEE, WINPI · 1720407893Verified via NPPESStatus · A
Source: NPPES NPI RegistryLast refreshed Jul 8, 2026
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Educational answers with the public sources they came from. Phoenix never diagnoses and never recommends one provider or hospital over another.
Identity & practice
- Legal name
- CARA O'BRIEN, M.D.
- Profession
- Physician
- NPI
- 1720407893
- Primary specialty
- Internal Medicine, Geriatric Medicine
- Taxonomy code
- 207RG0300X
- Practice status
- A
- Credentials
- M.D.
- Practice address
- 9200 W WISCONSIN AVE · MILWAUKEE, WI, 53226
Provider Intelligence
Everything public we can show about CARA O'BRIEN, M.D.
3 of 15 public-record dimensions are populated from connected sources. Where a dataset is not connected yet, Phoenix links you straight to the official lookup instead of guessing. Nothing here ranks or endorses a provider.
State licenses
Every state licence Phoenix has located for this provider, current or historical.
Check the state board
Licence status changes between refreshes. The issuing board is always the authoritative record.
Check State medical & professional boardsBoard certifications
Specialty certification reported by a recognised certifying board.
Look up on ABMS
Certification is a training and examination credential. It does not describe an individual patient outcome.
Check ABMS Certification MattersEducation
Professional school and degree records located in connected public sources.
Not yet ingested
Education is published inconsistently across states. Absence here does not mean absence of training.
Check State board profiles & NPPESResidency & fellowship
Postgraduate training programmes reported in public records.
Not yet ingested
Training history is self-reported to boards and directories, and is not audited by Phoenix.
Check State board profiles & hospital directoriesHospital affiliations
Facilities publicly connected to this provider through directories or address overlap.
Confirm with the practice
An affiliation means a public record links the provider to the facility. It does not guarantee admitting privileges today.
Check CMS Hospital Compare · NPPESPractice locations
Addresses where the provider is publicly listed as practising.
1 location
- 9200 W WISCONSIN AVE · MILWAUKEE, WI, 53226 · Primary practice address (NPPES)414-805-6850Source record
Registry addresses lag reality. Always confirm the location before travelling to an appointment.
Verify at NPPES NPI RegistryPublic disciplinary actions
Publicly posted board or government actions matched to this provider.
Search the state board
Phoenix reports that a record exists. It never interprets severity, intent, or current standing — read the original filing.
Check State boards · FSMB DocInfoNPI details
The federal identity record every U.S. provider must maintain.
NPI 1720407893
- Legal name · CARA O'BRIEN, M.D.
- Credentials · M.D.
- Primary taxonomy · Internal Medicine, Geriatric Medicine207RG0300X
NPPES is self-maintained by the provider, so contact details can be out of date.
Verify at NPPES NPI Registry (CMS)CMS participation
Whether the provider is enrolled in Medicare and accepting assignment.
Look up on Medicare Care Compare
Medicare enrolment and assignment status are published by CMS and change frequently. Confirm before booking.
Check Medicare Care Compare (CMS)OIG exclusion status
Whether the provider appears on the federal list of excluded individuals.
Search the OIG LEIE
Exclusion lists are name-based and can return similar names. Confirm identity fields before drawing a conclusion.
Check HHS OIG · List of Excluded Individuals/EntitiesOpen Payments
Payments and transfers of value reported by drug and device manufacturers.
Search Open Payments
A reported payment is not evidence of wrongdoing. Research funding, meals, and royalties are all reported together.
Check CMS Open PaymentsYears in practice
Time since the earliest licensing or practice record Phoenix can see.
No dated record yet
This is a floor, not a career total — earlier practice may exist without a public dated record. Experience is not a quality measure.
Check Derived from dated public recordsLanguages
Languages spoken in the practice.
Ask the practice directly
Language capability is rarely published in a reliable public dataset, so Phoenix will not guess it.
Check Practice / health plan directoryAccepted insurance
Plans and networks the provider participates in.
Confirm with your plan
Network participation changes mid-year and varies by plan and location. Your insurer's directory is the only reliable source.
Check Your health plan's provider directoryProcedure & specialty intelligence
What the specialty and taxonomy records say this provider is trained to do.
1 specialty record
- Internal Medicine, Geriatric Medicine · Primary specialty (NPPES taxonomy)207RG0300XSource record
Specialty codes describe scope of training, not procedure volume, outcomes, or suitability for your situation.
Verify at NPPES taxonomy · certifying boardsPractice Locations & Affiliations
Compiled from NPPES, CMS PECOS, and hospital directoriesPrimary Practice Location · NPPES
CARA O'BRIEN, M.D.
9200 W WISCONSIN AVE · MILWAUKEE, WI, 53226
Phone · 414-805-6850
Source: NPPES NPI Registry
Sources: CMS Hospital Compare · NPPES · ZIP match + Address match
Healthcare Organization
10501 W RESEARCH DRIVE · MILWAUKEE, WI, 53226
Phone · 2624423912
Sources: CMS Hospital Compare · NPPES · ZIP match + Taxonomy compatible + Same city
Healthcare Organization
2600 N MAYFAIR RD · MILWAUKEE, WI, 53226
Phone · 4147711122
Sources: CMS Hospital Compare · NPPES · ZIP match + Taxonomy compatible + Same city
Healthcare Organization
2500 NORTH MAYFAIR RD · WAUWATOSA, WI, 53226
Phone · 4142572525
Sources: CMS Hospital Compare · NPPES · ZIP match + Taxonomy compatible
Healthcare Organization
2457 N MAYFAIR RD · WAUWATOSA, WI, 53226
Phone · 4144760306
Sources: CMS Hospital Compare · NPPES · ZIP match + Taxonomy compatible
Healthcare Organization
2300 N. MAYFAIRD RD · MILWAUKEE, WI, 53226
Phone · 4142574673
Sources: CMS Hospital Compare · NPPES · ZIP match + Same city
Healthcare Organization
2500 N MAYFAIR RD · MILWAUKEE, WI, 53226
Phone · 4147717400
Sources: CMS Hospital Compare · NPPES · ZIP match + Same city
Healthcare Organization
2323 N MAYFAIR RD · MILWAUKEE, WI, 53226
Phone · 4142571161
Sources: CMS Hospital Compare · NPPES · ZIP match + Same city
Healthcare Organization
201 N MAYFAIR RD · MILWAUKEE, WI, 53226
Phone · 4142599698
Sources: CMS Hospital Compare · NPPES · ZIP match + Same city
Healthcare Organization
2500 MAYFAIR RD · MILWAUKEE, WI, 53226
Phone · 4147718999
Sources: CMS Hospital Compare · NPPES · ZIP match + Same city
Clinic / Group Practice
2500 N. MAYFAIR RD, STE 600 · WAUWATOSA, WI, 53226
Phone · 4147274455
Sources: CMS Hospital Compare · NPPES · ZIP match
Healthcare Organization
2600 N MAYFAIR RD · WAUWATOSA, WI, 53226
Phone · 4142588444
Sources: CMS Hospital Compare · NPPES · ZIP match
Healthcare Organization
9730 W BLUEMOUND RD · WAUWATOSA, WI, 53226
Phone · 2623300630
Sources: CMS Hospital Compare · NPPES · ZIP match
Healthcare Organization
800 NORTH MAYFAIR ROAD · WAUWATOSA, WI, 53226
Phone · 2627980800
Sources: CMS Hospital Compare · NPPES · ZIP match
Healthcare Organization
11109 W. BLUEMOUND ROAD · WAUWATOSA, WI, 53226
Phone · 4142584311
Sources: CMS Hospital Compare · NPPES · ZIP match
Healthcare Organization
11803 W NORTH AVE · WAUWATOSA, WI, 53226
Phone · 4142585522
Sources: CMS Hospital Compare · NPPES · ZIP match
Healthcare Organization
2505 N MAYFAIR RD · WAUWATOSA, WI, 53226
Phone · 4142582117
Sources: CMS Hospital Compare · NPPES · ZIP match
Healthcare Organization
10125 W NORTH AVE · WAUWATOSA, WI, 53226
Phone · 4142570676
Sources: CMS Hospital Compare · NPPES · ZIP match
Clinic / Group Practice
10625 W. NORTH AVENUE · WAUWATOSA, WI, 53226
Phone · 4144762699
Sources: CMS Hospital Compare · NPPES · ZIP match
Healthcare Organization
2445 NORTH MAYFAIR RD · WAUWATOSA, WI, 53226
Phone · 4147747226
Sources: CMS Hospital Compare · NPPES · ZIP match
Clinic / Group Practice
933 N MAYFAIR RD · WAUWATOSA, WI, 53226
Phone · 4142588488
Sources: CMS Hospital Compare · NPPES · ZIP match
Healthcare Organization
2600 N. MAYFAIR RD. · WAUWATOSA, WI, 53226
Phone · 4142581500
Sources: CMS Hospital Compare · NPPES · ZIP match
Healthcare Organization
2445 NORTH MAYFAIR ROAD · WAUWATOSA, WI, 53226
Phone · 4147747226
Sources: CMS Hospital Compare · NPPES · ZIP match
Sources: CMS Hospital Compare · NPPES · ZIP match + Address match
Clinic / Group Practice
2500 NORTH MAYFAIR ROAD · WAUWATOSA, WI, 53226
Phone · 4148005359
Sources: CMS Hospital Compare · NPPES · ZIP match
Practice information is compiled from verified public datasets (NPPES, CMS PECOS, hospital directories, and state licensing records). Public records may vary by source and update schedule.
Phoenix Insight™
Why Practice Location Matters
Where care happens affects travel, scheduling, caregiver support, and follow-up visits.
Ongoing care often means several visits. A location that is realistic for you — by car, transit, or with a caregiver — makes it easier to keep appointments and follow through on treatment.
Addresses shown here come from the provider's registered public records.
What this does not tell you
- — Registered addresses can be billing offices rather than places you can visit.
- — Providers may practice at locations that are not in public records.
- — Call ahead to confirm the address, hours, and accessibility.
Educational information only — not medical advice, and not a rating or endorsement of any provider.
Contact
414-805-6850
Verify current contact info directly with the practice.
Verified Public Information
A summary of how many verified public datasets currently contain information for this provider. This is a coverage indicator only — it is not a quality rating and does not evaluate care.
1Verified Public Data Source Connected
Additional public datasets are still being checked and may become available over time.
Category coverage
- —
Current Licenses
Not Yet Queried · State Medical Boards
- —
Historical Licenses
Not Yet Queried · State Medical Boards
- —
Practice History
Checked — No Public Record Identified · NPPES / CMS PECOS
- —
Hospital Affiliations
Not Yet Queried · CMS Hospital Data
- —
Board Certifications
Not Yet Queried · ABMS Public Lookup
- —
Medical Board Records
Not Yet Queried · State Medical Boards
- —
Quality Data
Not Yet Queried · CMS Care Compare
- 1
Verified Public Sources
Verified · NPPES · CMS · State Boards
Missing data is not proof of absence. "Not identified in currently connected public sources." simply means Phoenix Health Compass did not find a record in the datasets currently connected for this category — additional public sources may show more.
Phoenix Verification Panel
What was checked, where it came from, and what remains unconfirmed. Verification is a record match — it is not a rating, ranking, or endorsement.
Professional Verification
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Phoenix Insight™
Where Phoenix Gets Its Information
Phoenix Health Compass builds profiles from official government and licensing sources, and links to every one of them.
Knowing where information comes from helps you judge how much weight to give it. Phoenix prioritizes federal registries, state licensing boards, and other official public datasets.
Every data element on a profile carries a source link so you can confirm it yourself at the original agency.
What this does not tell you
- — Public sources are not complete, and coverage differs by state and profession.
- — Phoenix does not add opinions, ratings, or private information to these records.
Learn more from trusted public sources
- NPPES NPI Registry — The federal registry of provider identity, specialty taxonomy, and practice address.
- CMS Data — Federal enrollment, participation, and quality datasets.
- OIG Exclusions Database — Federal exclusion records for healthcare programs.
Educational information only — not medical advice, and not a rating or endorsement of any provider.
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Educational reference only. Information on this profile is aggregated from public sources for research and preparation. It is not an endorsement, rating, or recommendation, and it is not a substitute for professional medical advice, diagnosis, or treatment.