Physician Profile
Unclaimed ProfileAbout POSEVER
Based in Phoenix, AZ, James O Posever, MD is listed in the NPI registry under rheumatology. James graduated from Northwestern University Feinberg Medical School in 1991. According to Medicare claims data, James cared for 46 Medicare patients across 57 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (602) 263-1200
- Email not available
Practice Locations
4212 N 16TH ST
Phoenix, AZ 85016
Procedures Most Often Billed to Medicare
57 services · 46 patients · 2 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
44 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
13 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other rheumatology specialists in Phoenix 8
Same specialty, same city.
More connections — 16 related providers in 2 groups
Trained at Northwestern University Feinberg Medical School 8
Other providers in the same specialty who trained at the same institution.
Class of 1991 at Northwestern University Feinberg Medical School 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Dr. Posever specialize in?
Dr. Posever is a rheumatology in Phoenix, AZ. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “RHEUMATOLOGY”.
NPI registry
Where is Dr. Posever located?
Dr. Posever is listed at 4212 N 16TH ST, Phoenix, AZ 85016. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Posever's phone number?
The number on file is (602) 263-1200. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Posever's NPI number?
Dr. Posever's National Provider Identifier is 1154364214. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Posever go to medical school?
Dr. Posever attended Northwestern University Feinberg Medical School, graduating in 1991. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Posever been practicing?
Dr. Posever has 35 years experience. Calculated from a graduation year of 1991, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Posever do most often?
According to Medicare billing data, Dr. Posever the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Posever confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Posever. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.