DR. ALEXANDRA ESTHER GRIEB (M.D.) – Hospitalist Physician, NPI 1003349853
Hospitalist Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,994 INTERNAL MEDICINE in CO
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Provider Addresses for DR. ALEXANDRA ESTHER GRIEB (M.D.)
DTC Parkway, Denver Tech Center, Greenwood Village, Arapahoe County, Colorado, 80111-2508, United States
GREENWOOD VILLAGE, CO 801112719
Phone: (303) 745-0000
Fax: (303) 773-3101
Type: Mailing
919 E 32ND ST
AUSTIN, TX 787052703
Phone: (512) 544-7111
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 5 Open Payments records for all available years, with a total value of $100.
Total Amount is formed as General ($100) + Research ($0) + Ownership ($0) = $100.
Last reported payment date: 2024-07-11 • Largest payer in this snapshot: PFIZER INC. ($71).
Total Amount
$100
General + Research + Ownership
Payments
5
Total payment records
General Amount
$100
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-07-11
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| PFIZER INC. | $71 |
| Ferring Pharmaceuticals Inc. | $15 |
| Janssen Pharmaceuticals, Inc | $15 |
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: 2022-01-25
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 |
|---|---|---|---|---|
| I20220125000591 | I | Internal Medicine | TX | 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 |
|---|---|---|---|---|
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 188 | 86 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 79 | 39 | $0 |
| 99239 | Hospital discharge day management, more than 30 minutes | 53 | 53 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 26 | 26 | $0 |
Insurance plans in this area (ZIP 80111)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine | TX | |
| Family Practice, Emergency Medicine | TX | |
| Internal Medicine | TX | |
| - | VA | |
| Hospitalist, Internal Medicine | TX | |
| Internal Medicine | PA | |
| Internal Medicine | TX | |
| Hospitalist, Internal Medicine, Pediatric Medicine | TX | |
| - | TX | |
| Internal Medicine, Hospitalist | TX |
Reviews
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