DR. ALBERT TZENG (DO) – Hospitalist Physician, NPI 1831695758
Hospitalist Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,392 HOSPITALIST in IL
Provider Addresses for DR. ALBERT TZENG (DO)
836 W Wellington Ave
Chicago, IL 606575147
Phone: (773) 296-5424
Fax: (773) 296-5265
Type: Location
11505, Ridge Mist Terrace, Lake Normandy Estates, Potomac, Montgomery County, Maryland, 20854, United States
POTOMAC, MD 208542032
Phone: (240) 483-1703
Type: Mailing
Advocate Illinois Masonic Hospital, 836, West Wellington Avenue, Lake View, Lakeview, Chicago, Lake View Township, Cook County, Illinois, 60657, United States
CHICAGO, IL 606575147
Phone: (773) 296-5424
Fax: (773) 296-5265
Type: Location
3600 JOSEPH SIEWICK DR
FAIRFAX, VA 220331709
Phone: (703) 391-3600
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: 2024-05-01
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20210929003731 | I | Hospitalist | DC | TBD |
| I20240501004097 | I | Hospitalist | VA | 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 |
|---|---|---|---|---|
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 364 | 322 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 261 | 117 | $0 |
| 99239 | Hospital discharge day management, more than 30 minutes | 107 | 102 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 45 | 32 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 19 | 19 | $0 |
Insurance plans in this area (ZIP 60657)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Hospitalist, Internal Medicine, Internal Medicine | VA | |
| Nurse Practitioner | VA | |
| Family Practice | VA | |
| Nurse Practitioner | VA | |
| Physician Assistant | VA | |
| Internal Medicine | VA | |
| Internal Medicine | VA | |
| Hospitalist, Internal Medicine, Internal Medicine | SC | |
| Hospitalist, Internal Medicine | VA | |
| Internal Medicine | TX |
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