HANS CHIANG (MD, MBA, MS) – Hospitalist Physician, NPI 1639675648
Hospitalist Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
18,056 INTERNAL MEDICINE in NY
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Provider Addresses for HANS CHIANG (MD, MBA, MS)
7188 TWIN OAKS DR APT B
INDIANAPOLIS, IN 462265774
Phone: (206) 713-1560
Type: Mailing
Stony Brook University Hospital, 101, Nicolls Road, Suffolk County, New York, 11794, United States
STONY BROOK, NY 117940001
Phone: (631) 444-2020
Fax: (631) 444-2894
Type: Location
285 HANCOCK ST APT 1527
QUINCY, MA 021712486
Phone: (206) 713-1560
Type: Mailing
199 REEDSDALE RD
MILTON, MA 021863926
Phone: (617) 313-1377
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2022-06-21
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20220621001448 | I | Internal Medicine | MA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 517 | 205 | $0 |
| 99239 | Hospital discharge day management, more than 30 minutes | 127 | 125 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 118 | 118 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 98 | 43 | $0 |
Insurance plans in this area (ZIP 46226)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Physician Assistant | MA | |
| - | VA | |
| Hospice/Palliative Care | IL | |
| A N E S T H E S I O L O G Y | MA | |
| Internal Medicine | MA | |
| Certified Registered Nurse Anesthetist (Crna) | MA | |
| Certified Registered Nurse Anesthetist (Crna) | MA | |
| Certified Registered Nurse Anesthetist (Crna) | TN | |
| - | MA | |
| Emergency Medicine | NC |
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