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

James O Posever, MD

Individual provider Rheumatology Physician · NPI 1154364214

James O Posever, MD is a Rheumatology in Phoenix, Arizona. Graduated from Northwestern University Feinberg Medical School in 1991, 35 years ago. Practices with Dhew Ind Hlth Sv Hlth Svs and Mntl Hlth Adm, a 223-clinician group and accepts Medicare assignment. Licensed in Arizona.

Years since qualifying
35
Trained at
Northwestern University Feinberg Medical School
Licensed in
AZ
In the registry since
2006
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

4212 N 16th St
Phoenix, AZ 85016-5319
Phone: (602) 263-1200
Fax: (602) 263-1593
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Rheumatology Physician (primary) Taxonomy 207RR0500X · Licence 29356 (AZ)

Record details

NPI number1154364214
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 14, 2006
Last updated in NPPESAugust 26, 2011
Mailing address4212 N 16th St, Phoenix, AZ 85016-5319

Medicare enrollment

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

Medicare specialtyRHEUMATOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolNORTHWESTERN UNIVERSITY FEINBERG MEDICAL SCHOOL
Graduated 1991 (35 years in practice)
Group practice Dhew Ind Hlth Sv Hlth Svs And Mntl Hlth Adm — 223 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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