DR. ANN T KLEIN (MD) – Family Medicine Physician, NPI 1003861261
Family Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,661 FAMILY PRACTICE in CO
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Provider Addresses for DR. ANN T KLEIN (MD)
3965, South Jersey Street, Denver, Arapahoe County, Colorado, 80237, United States
DENVER, CO 802371141
Phone: (303) 807-0648
Type: Mailing
7447, East Berry Avenue, Greenwood Village, Arapahoe County, Colorado, 80111, United States
250
GREENWOOD VILLAGE, CO 801112146
Phone: (303) 770-4227
Fax: (303) 770-4231
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 4 Open Payments records for all available years, with a total value of $433.
Total Amount is formed as General ($433) + Research ($0) + Ownership ($0) = $433.
Last reported payment date: 2024-07-01 • Largest payer in this snapshot: Astellas Pharma US Inc ($297).
Total Amount
$433
General + Research + Ownership
Payments
4
Total payment records
General Amount
$433
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-07-01
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Astellas Pharma US Inc | $297 |
| Tandem Diabetes Care, Inc. | $136 |
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: 2005-08-09
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 |
|---|---|---|---|---|
| I20050809000337 | I | Family Practice | CO | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 159 | 110 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 57 | 48 | $0 |
| G0439 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 40 | 40 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 39 | 32 | $0 |
Insurance plans in this area (ZIP 80237)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CO | |
| Advanced Heart Failure And Transplant Cardiology, Cardiac Electrophysiology, Cardiovascular Disease (Cardiology), Internal Medicine | CO | |
| Emergency Medicine | CO | |
| Emergency Medicine | CO | |
| - | CO | |
| - | CO | |
| Emergency Medicine | CO | |
| - | CO | |
| - | CO | |
| - | CO |
Reviews
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