Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Frank Joseph O'Brien, MD

Individual provider Nephrology Physician · NPI 1144774266

Dr. Frank Joseph O'Brien, MD is a Nephrology in Saint Louis, Missouri. Qualified in 2006, 20 years ago. Practices with Washington University, a 2,986-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Missouri.

Years since qualifying
20
Licensed in
MO
In the registry since
2016
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

4921 Parkview Pl Div Im Nephrology Ste 5C
Saint Louis, MO 63110-1032
Phone: (314) 362-7603
Fax: (314) 362-5470
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence 2017022825 (MO)

Record details

NPI number1144774266
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 5, 2016
Last updated in NPPESApril 17, 2025
Certification dateSeptember 29, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNEPHROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2006 (20 years in practice)
Group practice Washington University — 2986 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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