DR. ANN M MASS (MD) – Internal Medicine Physician, NPI 1598769358
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Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
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Provider Addresses for DR. ANN M MASS (MD)
225, North Mill Street, Aspen, Pitkin County, Colorado, 81611, United States
STE 116
ASPEN, CO 816111958
Phone: (970) 544-1234
Fax: (970) 544-1310
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $15.
Total Amount is formed as General ($15) + Research ($0) + Ownership ($0) = $15.
Last reported payment date: 2024-11-19 • Largest payer in this snapshot: Amgen Inc. ($15).
Total Amount
$15
General + Research + Ownership
Payments
1
Total payment records
General Amount
$15
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-19
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Amgen Inc. | $15 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
No Medicare enrollment or revalidation data available for this provider in our database.
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 | 350 | 180 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 212 | 145 | $0 |
| 93000 | Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 139 | 132 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 100 | 69 | $0 |
| G0328 | Colorectal cancer screening; fecal occult blood test, immunoassay, 1-3 simultaneous | 46 | 46 | $0 |
Insurance plans in this area (ZIP 81611)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| INTERNAL MEDICINE | CO | 82270 | Stool analysis for blood to screen for colon tumors | 101 | 101 |
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