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Edit this profileBased in Saint Louis, MO, Shirley S. Joo, MD is listed in the NPI registry under internal medicine. Shirley graduated from Loyola University of Chicago, Stritch School of Medicine in 1999. Medicare claims data shows Shirley provided 1,230 services to 239 patients. The services billed most often include professional service for preparation and provision of 1 or more antigens, professional service for multiple injections of allergen, and established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more. NPI 1144262825 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
615 S NEW BALLAS RD
Saint Louis, MO 63141
Within Internal Medicine generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
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1,230 services · 239 patients · 7 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Professional service for preparation and provision of 1 or more antigens | Treatment | 95165 |
760 | As often as other peers in Internal Medicine |
| Professional service for multiple injections of allergen | Treatment | 95117 |
305 | More often than most peers in Internal Medicine |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
71 | As often as other peers in Internal Medicine |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
30 | As often as other peers in Internal Medicine |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
29 | Less often than most peers in Internal Medicine |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
22 | Less often than most peers in Internal Medicine |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
13 | Less often than most peers in Internal Medicine |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Dr. Joo is an internist in Saint Louis, MO. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
Dr. Joo is listed at 615 S New Ballas Rd, Saint Louis, MO 63141. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (314) 251-6382. Contact the office directly to confirm availability and scheduling.
NPI registry
Dr. Joo's National Provider Identifier is 1144262825. 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
Dr. Joo attended Loyola University of Chicago, Stritch School of Medicine, graduating in 1999. This comes from the CMS National Downloadable File.
CMS public data
Dr. Joo has 27 years experience. Calculated from a graduation year of 1999, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Dr. Joo provides treatments such as professional service for preparation and provision of 1 or more antigens and professional service for multiple injections of allergen, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Joo. If this is you, claiming it is free.
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