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Edit this profileMark Y. Chiang, MD is a healthcare provider in Ann Arbor, MI specializing in hematology. Mark trained at Perelman School of Med at the University of Pennsylvania, graduating in 2001. Mark is also listed as specializing in internal medicine, hematology & oncology, and medical oncology. According to Medicare claims data, Mark cared for 30 Medicare patients across 37 services. The services billed most often include established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more and new patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more. This provider record is associated with NPI 1720034986.
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.
1500 E MEDICAL CENTER DR
Ann Arbor, MI 48109
Within Hematology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Most searched conditions
Anemia
Bleeding disorders
Blood and immune disorders
Blood cancer
Blood clots
Bone marrow disorders
Clotting disorders
Inherited blood disorders
Iron disorders
Lymph conditions
Lymph disorders
Metabolic blood disorders
Nutritional blood disorders
Organ conditions
Platelet disorders
Protein disorders
Red blood cell disorders
White blood cell disorders
Most searched procedures
Biopsy
Blood treatments
Catheter care
Cell therapy
Cellular therapy
Consultation
Consultations
Diagnostic tests
Infusions
Injections
Lab tests
Medication management
Monitoring
Patient education
Procedures
Transfusion therapy
Transplants
Treatments
37 services · 30 patients · 2 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
26 | Less often than most peers in Hematology |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
11 | Less often than most peers in Hematology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Dr. Chiang is a hematology in Ann Arbor, MI. That is the designation recorded for this NPI in the federal registry.
NPI registry
Dr. Chiang is listed at 1500 E Medical Center Dr, Ann Arbor, MI 48109. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (734) 936-4000. Contact the office directly to confirm availability and scheduling.
NPI registry
Dr. Chiang's National Provider Identifier is 1720034986. 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. Chiang attended Perelman School of Med at the University of Pennsylvania, graduating in 2001. This comes from the CMS National Downloadable File.
CMS public data
Dr. Chiang has 25 years experience. Calculated from a graduation year of 2001, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Dr. Chiang 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
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Chiang. If this is you, claiming it is free.
Guide.md
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